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Old 09-16-2008, 10:47 PM #1
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Default problems with lite on 20x laser module

hello to ya all
i extracted laser module from my lite on 20x dvd rw
, i made driver based on 317 IC, measured it and everything is fine
first i used 3 aaa batteries as a source
i got very very small light from module
then i used 4 aaa, result was the same
then i used 9v battery - the same
and then i pissed off and connected battery directly to the module
result was - the same as the above
i'm very very confused by this
i will post pictures tomorrow...
if anybody has an idea please share it with me


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Old 09-16-2008, 10:52 PM #2
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Default Re: problems with lite on 20x laser module

Quote:
Originally Posted by jed2i
if anybody has an idea please share it with me

I do not know "how" because I wasn't there, but it sounds like you blew your diode. You don't have a laser any more. You have an LED now.

Sorry

Peace,
dave
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Old 09-17-2008, 01:37 AM #3
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Default Re: problems with lite on 20x laser module

Welcome to LPF,
So now that you made yourself a test load out of your laser diode, you can use it to
re-check the current supplied by your driver.

Quote:
, i made driver based on 317 IC, measured it and everything is fine
maybe not :-[
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Old 09-17-2008, 02:10 AM #4
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Default Re: problems with lite on 20x laser module

I blew my first diode too! Turns out I completely miswired my driver circuit somehow.
My blown diode now makes a great test load for setting the current. Better luck
with your next diode.
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Old 09-17-2008, 04:42 AM #5
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Default Re: problems with lite on 20x laser module

Quote:
Originally Posted by Galdor
I blew my first diode too! Turns out I completely miswired my driver circuit somehow.
My blown diode now makes a great test load for setting the current. Better luck
with your next diode.
Club newbie, the old DIY test load mod,

I belong to another club also, the burned up test load made from a blown diode
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Old 09-17-2008, 06:03 AM #6
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Default Re: problems with lite on 20x laser module


i do not get it, how could i blew my diode if i have set my pot to 550 ohms?
at 550 ohms there was no light
my guess is that diode was then blown away from the start because the man who gave me dvd rw said that he is not sure if it still works
but it costed me nothing so it is ok , at least i have now a test load
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Old 09-22-2008, 03:12 PM #7
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Default Re: problems with lite on 20x laser module

I got the same module. Can anybody tell me what the other diode is? thers one thats the open can with 3 pins, then there is the other , just normal diode with 3 pins also.




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Old 09-22-2008, 05:10 PM #8
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Default Re: problems with lite on 20x laser module

I also have a 20x i took apart. There is a red long open can diode and then an IR diode. It has a little piece of purple sheen glass lense on it.
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