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Pictures of my DEAD $24 Newegg Sony 20x Red Diode

M

m.carroll

Guest
Here's some macro pics of my dead diode. Taken with my Casio Exilim EX-z850 with an additional convex lens held in front. Not too shabby for a tiny camera. It appears that the negative tiny gold wire was bent and therefore it is dead.

CIMG2874.jpg

CIMG2870.jpg

CIMG2864.jpg

CIMG2862.jpg
 





phenol

phenol

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Joined
Oct 30, 2007
Messages
533
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Re: Pictures of my DEAD $24 Newegg Sony 20x Red Di

just because the bonding wire is bent doesnt necessarily mean that the chip is dead. as shabby as the pic may be, it looks that the wire is not broken. try to carefully bend up the portion touching the + bar with a tiny needle. just a tad.
 
M

m.carroll

Guest
Re: Pictures of my DEAD $24 Newegg Sony 20x Red Di

i've bent it back up, but to no avail, still dead.
 
Benm

Benm

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Re: Pictures of my DEAD $24 Newegg Sony 20x Red Di

Is the wire still connected to both the die and the pin, or has it broken in the middle or became disconnected from either?

If the connection to the die is still good you might be able to re-work it by either soldering it to its other half (in case of a broken wire) or into the pin directly if it came dislodged on that end. This is very tricky to do obviously, but an attempt should take that long and you have little to lose.
 
M

m.carroll

Guest
Re: Pictures of my DEAD $24 Newegg Sony 20x Red Di

everything is still hooked up right, the diode just does not seem to lase. it draws 7.1 volts from my 2x CR123's and no current, and i cant see the 1.25 refrence voltage on the lm317t, but the circuit works with a dummy load...oh well.
 
Zom-B

Zom-B

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Mar 25, 2008
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Re: Pictures of my DEAD $24 Newegg Sony 20x Red Di

It looks like someone grabbed the die with his greasy fingers. It could be that the chip itself is damaged by mechanic forces, or that the lasing output (assuming it is a microscopic transparent mirror) is broken.

You could try to take a needle supplied with the right voltage, and touch the top with it. If that doesn't work then the chip itself is broken.
 
mikeeey

mikeeey

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Jun 7, 2007
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Re: Pictures of my DEAD $24 Newegg Sony 20x Red Di

dont worry, your not alone, my poineer dies after 20 seconds of use, it turned into an LED. but my Sony is holding up great!
im sorry to hear of your loss :p
 
M

m.carroll

Guest
Re: Pictures of my DEAD $24 Newegg Sony 20x Red Di

yeah, i just bit the bullet and ordered a new one. its sitting on my desk. i have a class and then some final preparations to do before extracting and burning ;D
 
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