HOT LASERS?
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March 13, 2010, 09:37 PM I was just curious if anyone else’s lasers on their messiah got hot after lasering, like hot to the touch, like “ouch that hurt hot” not “wow thats pretty warm hot’....because mine tend to get pretty hot after a session. just wondering. Also mine have black rings on the golden part on some…they still burn brightly i was just wondering if that’s a bad/uncommon thing? |
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[ # 1 ] March 13, 2010, 09:52 PM You know, I’ve totally noticed the black ring on some of them lately. I think it’s just a bit of a different casing -they all come from the same place. I’ll keep an eye out and see if each type is in completely different bags. If so, then I guess one is probably newer. They’re the same diodes, just slightly different case so it’s not a problem, but yeah… I’m always curious about that, too. Now, yes, it’s probably a problem if a diode gets “HOLY CRAP HOT”. Every single time so far, though, it’s one diode in an area -not a bunch of them. It’s just giving off enough heat to heat the whole area. You can probably identify the hot one by flipping over the helmet and looking at the laser beam. The really hot ones are usually just a tiny pinpoint of light -or it probably will be soon. So, try to identify it, and go ahead and get it out of the helmet because it’s not doing any good for you. You can contact me and I can send you a replacement! Oh, and yes, just for the old schoolers out there that used to have heat problems -it wasn’t ever the wiring, it wasn’t ever the power supply, it was a problem with their circuit board that caused some diodes to do that. It took all of us ordering them in mass quantity for them to even realize it was a problem, so there was a few months in there where people were like “What the hell is going on!” Some people like Half Empty really got the short end of the stick, too, and had a bunch of them doing that. They changed the circuit board on the diodes, and literally it almost completely eliminated the problem. Occasionally a few get out, but most of the time I catch them. Over the past two or three months, I’d say it’s down to about me finding one diode out of every two 300-diode helmets now, and that’s pretty good… -O.M.G. |
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[ # 2 ] March 14, 2010, 12:52 PM I took about a 2 or 3 month break from lasering to try to get my seb derm under control. As Ive been making some headway lately, I decided to fire my messiah up again last week. When I took it off, I noticed that it was pretty dim, and my hair was burning hot. Not just a few of the diodes were hot, and most of the ones I put my finger on I couldnt leave it on for more than maybe a second. Back when I was using it in December, I noticed they were getting pretty warm, but thought nothing of it, now Im almost sure Id need them replaced. Anyway, is this something Id go through AiXiZ for, or something Id could do through you, OMG. Im going to wait a few weeks before I do anything, because in that time Ill have enough to buy and additional 50 diodes, but Id like to get an idea as to what Id need to do to make this happen before hand. Im not looking forward to rewiring my messiah, but I just dont think I could slap this badboy back on my dome without cooking my brain. |
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[ # 3 ] March 14, 2010, 09:17 PM
Ok, my limited experience, OMG Any ideas why this might be? Also OMG, how much “damp” should the hair be? Another idea:
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[ # 4 ] March 14, 2010, 10:07 PM Hey, Marcelo! They are going to always be a little warm. There are 300 little electronic things that shoot out laser beams in a close area! So, don’t worry… believe me, we’ve spent eons talking about this, and what you are getting is normal. Trust me… you’ll know when it’s not normal! But this is important… don’t over-analyze in the first few weeks -it’s easy to do!!! lol… I’m already using as little bit of wiring as I can, I have way more headroom than I need just in case, and the only way you could cool them further would be to integrate liquid nitrogen somewhere in the helmet! That’d be funny! About the dampness: when I have “damp” on my autosignature in my emails, that’s probably not the best word to use because I don’t really mean “wet hair” at all -but it’s any easy, convenient one, and by saying “damp”, people are ensured to take a shower! I’m going to really cover this a lot more in my “Laser Usage Protocols” video, but what I do is that I towel dry it pretty much all the way. So, the hair is only barely wet -if at all. In fact, by the time I start the treatment, the hair is probably already completely dry. BUT… the *scalp* still has that “shower fresh”,damp feeling -which I suppose could be called “moisturized’‘. I know what you are talkng about with the wet areas feeling cooler, and I don’t know that there is anything other going on other than the fact that it’s just a physical sensation. I’m just talking out of my ass here (and I’m hopped up on sleeping pills, so I’m not exactly “sharp”), but wet skin makes lasers penetrate deeper, and dry skin makes a lot of laser energy bounce off the surface. Well, maybe the heat difference is greater on dry hair because more of the energy is staying at the same level. Again, though, it might just be because your nerve endings feel the heat more when the skin is dry! Funky… I forgot… did I sell you the diodes that are getting hot? If I did, I can replace them -if not, AiXiZ will! Now, one big problem… there is a diode shortage going on so I can’t sell you 50 until the end of the week at the EARLIEST! It might be the beginning of next week. See, Chinese New Years screws up diode production every year. All of the Chinese factories in the entire country shut down for two weeks in mid-February, and before that… they are hurrying to get out all of their old orders. After that, they are extremely backed up -and often times there are employee shortages because I think a lot of these companies wait to call back the employees until later. when they are certain they have the business for them. So, new orders usually have to be done from scratch -meaning they don’t like to have extra supplies sitting there at the end of the year, so orders done right now will have to go through the entire production run. Anyway, that’s what I’ve been told! lol…. I’m out of diodes now, but I should get them soon! -O.M.G. |
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[ # 5 ] March 15, 2010, 12:22 AM Here I am! I just wanted to report that I have not had any problems with diodes getting hot since I started using the laser messiah that I ordered from OMG. I used to be plagued from burning diodes, thought I was losing my mind, so I definitely understand the frustration. And let me just say…. LLLT fucking works. |
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[ # 6 ] March 15, 2010, 01:17 AM
So what do you attribute the diodes getting hot too in the past? |
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[ # 7 ] March 15, 2010, 06:25 AM Hey, Halfempty! tonyb, I think that HalfEmpty for some reason literally got MOST of the bad diodes (the ones with the faulty circuit boards) during that period! I blame his obvious pessimism, because you didn’t see CompletelyFull’s diodes buring out at all! lol… Ok, that’s my horrible, weak attempt at a pre-coffee 6am joke. Sorry! -O.M.G. |
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[ # 8 ] March 15, 2010, 11:29 AM @OMG- Yeah, I ordered a DIY kit complete with lasers, 200. I probably have about 190 in the helmet that ill have to send back, the other 10 I either used for other purposes that I cant take apart (a dentist style plastic lip spreader with 3 lasers to stimulate the gums, provides an awesome gum-pump), or blew out and were thrown out. It’ll probably be 2 or 3 weeks before I have the moolah to spend on an additional 50, so Ill get in touch when I have the fundage safely in my paypal. Hopefully the diodes will by flowing by then. On a side note, is it my understanding that youre no longer gluing the diodes in? This would save me ages when I rewire my helmet up. |
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[ # 9 ] March 15, 2010, 11:45 AM Well, I make the holes SMALLER now -I finally found a off-sized bit- so the helmets since about November don’t need to be glued now. The older ones still do, though! I should say this, though… my original laser messiah has bigger holes than any of the new ones, and I’ve treated that thing so ROUGH that there is barely a diode left that has glue on it. They’ve pretty much all popped out at one time or another -a cat knocked it off the sofa yesterday, I’ve stepped on it probably a hundred times, and I threw it full force at my wife when I was mad at her. Ok, the last one is a joke, but you get my point! Glue was necessary for it to survive the loving embrace of the post office, but as long as you keep it on a glass head or something, I don’t think you really need it -even with the older ones. -O.M.G. |
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[ # 10 ] March 16, 2010, 07:18 AM hey HalfEmpty, when did you see start seeing results with your laser messiah? and what did you use it in conjunction with?...I’m on my 3rd or 4rth week I believe and I’ve noticed a shed. |
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[ # 12 ] March 17, 2010, 02:13 PM Marcelo… You can’t embed videos in the forum YET… we’re waiting on the dork to write the updated code for the new software. I tried to update it myself, but I’m just not good enough at the php code yet to do it. Until it’s ready, just put it in URL tags:
[url]http://www.youtube.com/watch?v=xfzjz1hScwU[/url]
http://www.youtube.com/watch?v=xfzjz1hScwU
By the way, although *I* see that view every day, you may want to explain to people what they are looking at! I’m sure you’ve realized that 1) lasers are almost impossible to take good pictures/video of, and 2) that they are much brighter when they are facing directly at you -like the ones on the edge that have lipped out that you seem to be focusing on. -O.M.G.
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[ # 13 ] March 17, 2010, 08:43 PM Are they pulsing or dead? |
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[ # 14 ] March 18, 2010, 12:54 AM Hey OMG thanks for the reply, To be honest I am pretty sad! I will leave a video cam filming it thorugh 15 minutes and you will see that is evident it loses about 80% of the leds ,as they go dim and hot, even if it is hard to focus on them, the light still comes though and is very easy to tell. With my bare eyes is EVIDENT most of the diodes go dim! I took current readings with my multimeter of 10 hot and dim diodes and the current is way up, 30mAmps -32 mAmps, and the “healthy” bright lasers are 18mA-20-21 mAmps. I also tried the measures on the unhealthy diodes when they were cold, and the current stays the same, also the Resistance in Ohms stays the same for EVERY diode, healthy and unhealthy. What does this mean? If we use the Joule heating law , J = SQR(I - Amps) * R -Ohms * T - Seconds Thats why they get hot, they are faulty! the solution is easy, when you order didoes, measure up their current uptake, it should be about 15-20 at most, not 30-32mA thats why they go dim and hot! Those diodes came damaged as a batch, as from the 400 diodes maybe only about 45 or so of them are working 100% while the other 355 are dim and hot, I am pretty sad for this, the first and second days it worked great. If only it would have stay this way! bad luck. the design of the helmet is great, the wiring is kick ass and pretty! the diodes were faulty, got bad luck Could we have AixiZ replace them? Thanks mate I will post the video later when I can make it smaller - my video cam recorded 15 minutes in 1 gigabyte! *lol* |
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[ # 15 ] March 18, 2010, 02:39 AM Hey OMG and crew, Could we have AixiZ replace the whole batch? I will pay for shipping. What a shame!! =( Tomorrow I will buy a bigger memory card for my video camera, will leve it filming the helmet with a digitl bright clock besides it as reference then I will sped up the video and upload here so you can see this CAN happen, its nobodies fault, every electronic piece can fail, this was just a faulty batch, but I am sure Aixiz will want to replace them without any problem. the good thing to do for all people ordering directly from aixiz or OMG it would be to GREAT to develop a little kind of socket, for quickly connecting each laser diode and testing the current, anything over 25 Amps or 30 Amps ITS FAULTY and WILL be very dim and very hot soon! EDIT: Some of the “GOOD” lasers are in fact 25 Amps, and some of the hotter lasers are 38 Amps! =( |
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[ # 17 ] March 18, 2010, 05:35 AM Any coherent light phenomena CAN be focused if the lens (human eye - or camera lens and aperture) polar angles are within 1-2 stereoradians (depending on source) of alignment of luminous source (viewing cone), so I made an idiotic quick diagram to show my point:
So I took out two diodes form my messiah, one faulty and one working, So theres NO DOUBT I am focusing directly on the luminous source. So the brightness diference is not from the viewing angle, but from the source itself. As you can see in this video, the left one is the working diode and the right one is faulty, the left one sometimes when I fall out of the viewing cone gets very dim, but when I go back in aligment with the lens and aperture of my camera the brightness returns very bright, but the other poor damaged diode NEVER goes bright, despite being in full alignment as my diagram shows. http://www.youtube.com/watch?v=pJhEqLTO67k I have tested 140 diodes like this, and the faulty ones ALWAYS come out very very dime and SCOLDING hot, also with the dark horizontal banding I mentioned. I can test ALL of them, but I will wait for OMG to come to the rescue! =) Lets just wait for chinese new year to be over so Aixiz can respond and ship a replacement batch back! tomorrow I will buy a very big memory card for my video cam so I can film the messiah continuosly for 30 minutes, with my digital clock on the side so the time can be seen, and you can relate time with diodes going dime without any doubt, then I will speed up the video and upload here. See you tomorrow. |
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[ # 18 ] March 18, 2010, 09:43 AM Wow… yeah, ok, all I can do is tell you this, though, if they are dim like that, and I already think you know what I’m about to say but since it’s public, I need to address it: NONE of the other helmets have done that out of literally hundreds that I’ve made myself -including the ones that were made with the 3500 diodes that came with your exact order as far as I know it right now. Also, they didn’t dim for the full hour that I ran it before I sent it to you. Everything was working just like the other few hundred helmets. So, I’m less inclinded to think that it’s a rash of bad diodes… I think something either happened to it, or those were just different diodes or something (no clue, and we’ll find out). Now, if something happened to them, I don’t know what that is because nothing like that has ever happened with the at least 100,000+ diodes I’ve had my hands on -so I’ll need the helmet, and I may get you to send it to Dr. Maricle instead of me. I’ve seen them do that, of course, in very isolated incidences, and I’ve seen them do that after they’ve gotten really WET. In fact, that’s exactly what they do when they get soaked -not like with using damp hair, but with them being in a situation where moisture completely inundated them (I’m not saying that happened, I’m just saying that it takes an atypical situation to get that to happen). Also, the only way other than wetness that I can see this possibly happening is from something like a power surge from the power supply or some weird wiring thing. Anyway, I’m going to get Dr. Maricle to post, and I’m going to find out whether you need to ship it to directly to him or to me first. It’ll obviously be taken care of -that goes without saying- but we need to find out exactly what is different about your case here! -O.M.G. |
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[ # 19 ] March 18, 2010, 11:05 AM We literally push 10,000 or more of these lasers each month to several companies around the world and I have only seen this situation in two types of cases. 1) Where there is an improper wiring / grounding of a laser or group of lasers or 2) Where there has been a power supply failure of some kind. The lasers themselves, as you know, have a built in current control driver between 2.8 and 5VDC. This maintains a current draw of somewhere between 30 and 20mA, normally, there are a few exceptions. IF the power supply gets weak or for some unknown reason it can no longer maintain an operating voltage within that range, this could cause the diodes to fail. The standard symptom is the dim light (typical of overvolt / overcurrent driver failure). This means the laser cannot control current any longer (due to circuit board failure) and effectively will burn out the laser and start generating the heat situation noted. Chuck |
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[ # 21 ] March 18, 2010, 02:28 PM Hi, thanks for replying, I DIDNT do anything to my helmet, I know you havent met me but I am 100% honest and pretty smart to know how to handle the helmet properly. You say you noticed it on very wet helmets, so I havent spilled any liquids on it and have been VERY CAREFUL. My power supply is connected to a U.P.S which is grounded and has its own fuse and current control, so NO voltage variations here either. One thing to note, the red power cable which was supplied will get very hot and the power supply too, and it emits a weird sound when connected, I dont know if this is a regular thing to happen. So I though it was my PSU, so I literally unwired and removed two diodes, one working and one damaged, I connected the diodes to a battery operated fixture and measured the current, and as I said, they WORK GREAT for about 5 minutes, you couldnt tell the difference, after 5 minutes the damaged didoe will have its current go up to 30mA or more and will get scolding hot and very dim, dim as I can look at it my my bare eyes without squinting. So this was OUT of the helmet, OUT of the circuit and OUT of the provided power supply unit and cables, so the diode must be damaged somehow. If I had done something to the helmet I wouldnt be asking for replacement, but I woul buy a new batch and would say what happened. I found a temporal solution, I put it on for 5 minutes, and run my digital clock interval alarm, in 5 minutes chunks. When I hear the alarm go off, I turn the helmet off (first I look at it and see that almost ALL are working GREAT, very bright, except for a few of them which are ALREADY very dim and very hot) After 5 minutes REST, I turn the helmet again and I cycle this until I get the desired Joules delivered. To be noted, if NOBODY reported this back ever before out of 10 000 didoes, then I dont have a clue to what happened. I have decent experience with electronics from College days, basic soldering skills and a solid grasp of the theory so I didn’t BURN them for negligence or lack of knowledge. Please PM me and tell me where I need to send my poor helmet to be diagnosed and cured. I will report back with the video, for you to see that I am not making this up. |
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[ # 22 ] March 18, 2010, 04:37 PM Marcelo… Don’t worry about the video -what you are talking about is YES, absolutely what a damaged diode does! lol… You don’t need to show us anymore of that! Some “X Factor” had to happen here because the diodes don’t fail like that, therefore it had to be something external. ...And being that you said the power supply is whining, I’d say that’s the “X Factor”! Some sort of surge or something happened -at least that what it sounds like. Dr. Maricle will be able to tell. But relax… you don’t need to prove yourself! My god, we want you to have a working helmet. FOR EVERYONE ELSE… ...I need to point out that this is NOT a diode issue. This didn’t happen due to a flaw in the diodes. I base this on sheer numbers, and Dr. Maricle is saying the same thing about his other commercial customers. I’ve dealt with probably a hundred thousand of these diodes, and their premature failure rate during has been about one in every three helmets now -1 in 900- and that is INCREDIBLE. The amount of people asking for replacements is stunningly LOW, too… I think less than 100 diodes total. There isn’t any flaw in the design of them, and there isn’t a problem with heat, ohms, or resistance in the way we are wiring them -so we don’t need to focus on a problem that just doesn’t exist. There is not much difference in the way my helmets, the lasermax’s, probably the MEP-90, are all wired, and none of us have any sort of problem like this -unless something external happens, like the power supply, a surge, or whatever. So, I understand forum nature, and I’m heading off the confusion here! lol… -O.M.G. |
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[ # 23 ] March 18, 2010, 05:16 PM
Hey OMG, I also WOULDNT do anything to damage the helmet KNOWINGLY or UNKNOWINGLY, or NOT EVEN deluding myself into thinking I did something right, when it was in fact wrong, or any permutation of those! A surge COULD have damaged the PSU and it subsequently damaged the diodes, though as I say, I connected it to a grounded and current controlled UPS, to which I connect also my PC and my color Laser printer. I think this was a bad apple Power supply, short end of the straw. I finished the video, I will send it to you for your analisys tomorrow after my all night shift, NOT to prove myself, but to keep building the database of empirical knowledge of WHAT CAN HAPPEN, in EXTREMELY RARE ocassions due to X Factors, like a faulty power supply. Now, It must’ve been the power supply that fried the diodes, by itself, I will buy AN EXPENSIVE top notch SURGE PROTECTOR and connect the Power Supply on its own for my next new Messiah AND buy an isolating plastic casing for it! IT IS HUMMING/making a weird noise and after 30 minutes gets SO HOT that you can barely touch it. The Red, thick power cable also gets PRETTY HOT. Now I understand the diodes themselves werent bad by production, and I understand these came in enormous batches so the production process must be identical, so theres no way for them to be bad “per se”, I thought so at first, but now it’s more evident that the power supply DID fry them and I think the dark rings may be a result of that overheat caused by the power supply. I love my messiah, it’s a work of art, and its beautifully done with a great design and great craftsmanship, and looking at it shine with its 400 diodes burning bright red all at the same time made me very happy! I was telling my girl how sad I was for it’s failure, and I do want it back home healthy and working ! Please let me know when to send it back for diagnosis and diode exchange to you John, or to Dr. Maricle, tell me if you want only the faulty diodes or ALL the helmet including Power supply, and if you are going to rewire it or will send the replacement good diodes back to me and I will rewire myself -Yikes!- *LOL* Also please send me a price quote on a 200 diode messiah “full deal” as I will buy another for my girl soon, as she has a receding hair line because of some hormonal problems. She has AN AWFUL WHOLE LOT MORE HAIR THAN ME, thats for sure, so this will be ONLY for her hairline, thus I only need about 200 diodes! I will wait for the email or PM. Warm regards,
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[ # 24 ] March 19, 2010, 07:44 PM atch? |
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Sure, shit happens...but so does good shit! |
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[ # 25 ] March 19, 2010, 07:45 PM OMG,
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Sure, shit happens...but so does good shit! |
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[ # 26 ] March 19, 2010, 08:14 PM BaldBeGone Could be… well, not from my same order -Marcelo’s came from one that I got in late February or something- but I don’t know when they were made. Send me an email and I’ll send you Dr. Maricle’s address and you can send them straight to him. If there is any issue, I’m sure he’d like to see the diodes first hand! Either way, you’ll be taken care of if there is a problem with the diodes. UPDATE - I just checked the records and you were on the batch right before this. They could have been made in the same production batch, though. If there is a problem, though, we’ll get Dr. Maricle to figure it out, and we’ll all be happy, warm and fuzzy, and holding hands in the drum circle again! It’s still isolated though because it sounds like the problem you are describing is very noticeable, and there have been A LOT of helmets since then. Maybe the problem diodes were in only a few bags. So, that makes ME and Maricle feel better at least! lol… Maybe “Wang Lo” was running the diode production line for a few hours… -O.M.G. |
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[ # 27 ] March 20, 2010, 03:30 PM Dr. Marcelo— You may want to speak with ImmortalHair regarding your girl and her hormonal problems, as that is his field of expertise as an orthmolecular medicinal practitioner. You can reach him with a post on this site or on his own forum at: |
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[ # 28 ] March 21, 2010, 10:23 PM
I didn’t know he was a doctor too.. good to know! thanks for the offering. I am not familiar with orthomolecular medicine, I did hear it before, but I dont know the nuts and bolts of its practice, etc. Thank you. |
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[ # 29 ] March 22, 2010, 03:09 PM No problem Dr. Marcelo. He doesn’t have an MD, just went to school for Medicine, but went straight to work at some well-known alternative medicine clinics on the west coast administering alternative therapy remedies for quite a few years. |
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[ # 30 ] March 22, 2010, 05:17 PM
That is quite great, he doesn’t absolutely “NEED” an M.D. grade for being knowledgeable in his area of expertise, and I offer my own knowledge and experience to complement each other in anyway it’s needed. |
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[ # 31 ] March 22, 2010, 07:56 PM Luckily the front lasers don’t seem to be as dead/dying like the ones in the middle…but I don’t have much or any recession or thinning there at all so I still use the messiah for the hairline although I’ve “unplugged” a few of the hot diodes fromt he helmet completely because I want to continue use through the shed I’m having in the temporal area. I do not know if this is a good or bad idea. As for the dimming diodes, the ones that aren’t scalding hot, I’ve simply let them stay. They’re definitely weak but some laser light is better than no laser light…right? lol…Anyway I’ll take some photos. Any ideas as to how it would look best if I did? |
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[ # 32 ] March 22, 2010, 08:45 PM
I took the pictures with a SLR camera using the macro mode, and a video at 640x320 30 fps in MOV format. For how long have you had this helmet? I emailed Dr. Maricle, and I havent received any reply from him yet, so I decided to send my Messiah to him according to OMG’s instructions, even though he hasn’t replied to me yet. The helmet is goind through FedEx priority international so it should reach him tomorrow or the day after at most. I will keep you updated.
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[ # 33 ] March 25, 2010, 11:00 PM Hey, Marcelo! I’m sorry that I haven’t thanked you enough for not being irate and a cool cat about this! I know Dr. Maricle has it and he’s looking at it, and we’ve talked about it some and if it’s what I think it is, more than likely something happened that affected one particular small batch or something -“small” meaning a few hundred or however many. It’s not a widespread problem or anything, but the fact that you and one or two others had some problems leads me to believe that this is the case. I meant to send you an email saying thanks for working with us and not being angry, but I’ve been working such long hours that these days run together! Thank GOD I use AixiZ diodes, though, because I’d be SOL if I bought a big quantity from a random internet guy and something like this happened! Yeah, brick and mortar companies will always have their place when it comes to doing real business, that’s for sure. -O.M.G. |
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[ # 34 ] March 25, 2010, 11:01 PM Test -FYI… I’m getting some timeouts or something when I post and send PMs. It could just be that they are doing some maintenance on the database or something. If it’s still squirrelly tomorrow, I’ll look into it. |
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[ # 35 ] March 26, 2010, 01:50 PM
Hey John, I will wait for Dr. Maricle to sort this out. Thanks |
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[ # 36 ] March 26, 2010, 05:47 PM Yeah, the “no email notices” thing was my fault, and I explained that here: http://www.worldhairloss.org/index.php/forums/viewthread/6 To quote myself in the “Part II” video I just posted… “You live, you learn!” lol… You should be getting them now. I’ll check back with Dr. Maricle on Monday, and I’ll make sure that he sends it correctly to deter the banditos! |
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[ # 38 ] March 30, 2010, 03:09 PM I spoke to Dr. Maricle briefly, and he’s still testing it but so far it everything looks like it’s pointing to the POWER SUPPLY. That makes sense… that’s certainly something external. He’ll know for sure before too long! ...And yes, BaldbeGone’s power supply was from the same batch. So, maybe a couple of them were lousy and they damaged the diodes. Like I said, this makes total sense due to the fact that the bad diodes from those last few orders seem to be limited to INDIVIDUALS, not across the board. Individuals with funky power supplies that I gave them that apparently eat diodes for breakfast. lol… -O.M.G.
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[ # 39 ] March 30, 2010, 05:53 PM
Hey John, I KNEW IT!!! this power suplpy makes a humming noise, and ALSO is outputting 4 volts instead of the upper threslhold that are specified by manufacturer’s data sheet. It should be 3.3V at MOST. We should upgrade to 100-S-5 for next messiahs…
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[ # 40 ] March 30, 2010, 06:38 PM
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Sure, shit happens...but so does good shit! |
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[ # 41 ] March 30, 2010, 07:34 PM Baldbegone… I’ll send you out another power supply if it turns out that it’s responsible. NO CLUE how you’d test it to see if it’s faulty, though, because I don’t really know what the problem is -it might be a random spike issue, or simply failing to protect itself from spikes in the current for all I know. Basically, it might not be something that will appear “on demand”. I still have no clue about the ones with the dark burn marks. I don’t even have a clue about how that mark could occur since the diodes are no longer glued in, except it’s just a reaction in the metal if it gets too hot. Remember, I’m the ACTION MAN, not necessarily the “knowledge guy”... I have “people” for that! lol… I’ll wait for him to tell me about that -but if they look like a pinpoint of light or if they get really hot -not WARM, but HOT- then snip ‘em. Marcelo… Yeah, the whining of the power supply is a definite sign. I think that a 5 volt (turned down to about 4.5), 20-30 amp power supply might definitely be the way to go in the future. I’ll look into that. -O.M.G. |
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[ # 42 ] March 31, 2010, 07:32 AM
The best way to test for spikes/transients is with an oscilloscope. If you hook up a current shunt in the path you could look at current draw over time as well to see if there is a relationship. Also, I’m no diode expert, but if you blew even 1 diode and they are wired in parallel I would question the remainder on the helmet as you don’t know how much they were affected by any spike/transient either and they may eventually fail. You just blew the “weakest of the herd”. |
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[ # 43 ] March 31, 2010, 07:59 AM I know this is not what you meant AT ALL, xyoin1, but I have to spell out these things sometime to head off misinterpretations! lol… I just want to clarify that without something external causing it, there is ZERO RISK of one diode blowing and affecting the rest of the helmet -independent circuit boards, the fact that these diodes require so little current and power, and the nature of the wiring prevent that. That’s not a problem at all, and hasn’t been reflected practically or theoretically. You were talking about after a surge, I know I know. But if someone cherry picked that one paragraph out of this, they would probably come to a very wrong conclusion! I hate having to be the one that does this, but I know how much visibility these threads get, I just know from experience how “panics” are started, I know for an absolute fact that crummy people look at threads like this repeatedly so they can attempt to “spin” and discredit this type of diode for their own motives, and I’m doing my roll, as always, to be the confusion eliminator so none of this can happen! -O.M.G. |
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[ # 44 ] March 31, 2010, 06:43 PM
As for a new power adapter, OMG, I’ll gladly return the one I have to whatever address you give me- if it turns out that the power adapter was, in fact, the problem, which all signs currently point to. EDIT: For the record, my power adapter doesn’t seem faulty- well at least it doesn’t hum overheat (cables or brick) like marcello mentioned either. |
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Sure, shit happens...but so does good shit! |
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[ # 45 ] March 31, 2010, 08:11 PM
I also think there wasn’t a power surge in my case, as I use a pretty darn good surge protector, with electronically regulated current control and uninterrupted power that lasts for 1 hour. I also use this to hook up my expensive color printer and my 50 inch plasma HD TV. The helmet is good, the diodes may have come from a bad batch, who knows? In my opinion and experience, one way to spot soon-to-fail diodes are those that pull more than 30mAmps. You can use an oscilloscope as suggested by xioyn1 or a simple unexpensive digital/analog multimeter in the DCA 200m setting. Does your Power supply get PRETTY HOT? (You can safely touch THE GRILL -DO NOT ATTEMP TO TOUCH INNER COMPONENTS!!!)?. Mine is definitely faulty, it hums and it gets very hot, and also puts oy 4 Volts instead of its maximum output which should be 3.3V. I STRONGLY suggest to upgrade to 100-S-5 powers supplies for next messiahs or for 350+ diodes helmets. |
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[ # 46 ] April 01, 2010, 12:47 PM
OMG, You are correct, I was talking specifically about external stimuli causing potential “invisible” damage to all the diode while only apparently damaging a small set. I guess this is why legal & marketing folks hate when engineers talk huh?
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[ # 47 ] April 01, 2010, 04:50 PM
I already measured the power cable and its gauge is MORE than enough what it should be for 7 amps (my helmet pulled around 7 amps total DC) and the power supply is rated at 20 amps. 20 amps would probably fry the cable though. @Xyoin1 What type of engineer are you? is good to have you around. |
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[ # 48 ] April 01, 2010, 06:36 PM Marcelo…
The power supplies -with the exception of bad ones like the one you received- are pretty darn good for what we want. I agree that a 5 volt one may be something to look at in the future, but we -meaning not only myself and the helmets I created, but other companies and people using power supplies for their own laser projects -USED 5 amp ones from January to March 2009, and the incidences of diodes frying was higher. The replacement with 3.3 volt ones with the voltage turned up has resulted in much greater success, and there are probably 500 devices out their that are using them. Xyoin1… “I guess this is why legal & marketing folks hate when engineers talk huh?” -lol… yeah, but you’re not the one talking about ELECTRIC CHAIRS! lol… -O.M.G.
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Just having fun with you, Marcelo!|
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[ # 49 ] April 01, 2010, 11:15 PM
LOL sorry man, I didnt mean to scare anyone! this helmet wouldnt cause any trouble at all, it has no danger at all, I was just saying that electric chairs used 20 amps DIRECT electricty on wet, shaves scalps.These laser diodes draw around 20 MILLIAMPS, 20 thousand times less electricity than an electric chair, and this electricity IS NOT deleivered to your scalp, but used to make laser light by stimulated emission of the photo diodes radiation (light) I thinkI didnt make myself clear! LOL sorry |
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Member Total Posts: 21 Member Since: |
[ # 50 ] April 02, 2010, 07:27 AM
Good to know that you’re wiring can handle the load, but its still kind of odd that its warm to the touch. I’m an electrical engineer. |
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