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Laser Question

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#1 dmcbudman


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Posted 27 May 2010 - 03:07 AM

ok heres the situation
i got a ps3 with dre (no DB/DVD/CD's work)
so i figured $50 or so for a new 400aaa
then i wondered what part of the laser is dead, maybe i can save a few dollars
well the laser does not light up, nor does the disc spin
first i wondered if the lens its self was the culprit and swapped it for another i had laying around, same symptoms
so i came to the conclusion that the diode died
having never done one before i figured only if i was able to remove the old one i would go ahead and buy a replacement
ok so the hard part is done, the diode is removed
so now i have the thought to hot wire the diode
i used 5v from usb and touched the pins..red and blue lit up

so this is my dilemma
was the lens i replaced bad also?
is t really the diode, but the 5v overpowered it and made it light? (maybe its not as bright as it should be..idk didnt look into it)
or is it something else altogether like the DB controller (BD7956FS)?

any thoughts/suggestions/feedback are welcome

Edited by dmcbudman, 27 May 2010 - 03:15 AM.

#2 dmcbudman


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Posted 29 May 2010 - 05:03 PM

well i ruled out the drive board
i put a borrowed laser in it and it worked fine
so do you think the diode would light when extra voltage is applied? (remember it doesnt light up blue or red in the ps3)

#3 dmcbudman


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Posted 01 June 2010 - 06:44 PM

well i kinda ruled out the diode
i fit a violet diode from a 410a (3 pin) in the 400a (5 pin) housing
this time i used a clear disc to check the laser light (didnt do that before)
and it lit up violet barely
so my transplant apparently worked it but something on the laser assembly that is limiting the current to the diode?
i will replace the original diode later and use the clear disc to make sure that is barely lighting too
if so im sure its one of the ICs on the laser assembly (can you buy those?)

#4 postal worker

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Posted 03 June 2010 - 02:06 AM

i can't comment on the IC thing other than just suggest buying a broken drive a salvage from that...
but i wanted to thank you for putting up details of what your doing inorder to solve the issue. keep up the good work

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