Sony G70 Died (No Power) UPDATE: Found dead cap, need to identify - AVS Forum
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post #1 of 4 Old 11-12-2012, 02:14 PM - Thread Starter
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Last night my G70 made a loud bang and stopped projecting. It has no power as far as I can tell.

I checked the fuse with a multimeter. It's fine.
I pulled each of the four boards that seem related to power. No puffy/leaking capacitors, burns or any other obvious signs of damage.

For good measure I installed a new fuse and 120V cord today. Still no power.



UPDATE: Found a dead capacitor and bit of scorching on the FAB board.

It's inside of what Curt calls the Main Power Supply 1

On the attached picture you can see that C2102 popped, C2103 and R2101 appear to need replacement as well. Anyone have a schematic or other way of figuring out what their values are? It looks like an easy fix but the caps don't appear to be labelled. rolleyes.gif

I checked Curt's list of manuals, great stuff but nothing that would tell me what those caps are.

So sages of AVS, I beseech thee: name those caps.
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post #2 of 4 Old 11-12-2012, 04:49 PM
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I had an FAB do the exact same thing. The cap isn't necessarily the cause of the problem, might just be a domino in the failure chain.

anyway, boards are cheap now, just replace it.

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post #3 of 4 Old 11-13-2012, 01:10 PM - Thread Starter
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Quote:
Originally Posted by draganm View Post

I had an FAB do the exact same thing. The cap isn't necessarily the cause of the problem, might just be a domino in the failure chain.
anyway, boards are cheap now, just replace it.

I contacted one guy at Curt's site that might have a set of G70 power boards. Any other places you would recommend?
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post #4 of 4 Old 11-14-2012, 09:14 AM
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Well he will almost certainly have one but let me know if he doesn't . I can check my inventory, I parted out 3 G70's a while back

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