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AVR 300 Powers up, 8 seconds, powers off

My AVR 300 is 4 years old and has developed a problem.

It will power up and begin it's self check, then shuts off.

I opened it up, and there is a large capacitor (3300Uf) on
what looks like the Digital Analog board (the big board that
lays flat along the bottom of the chassis under the add-on
cards, which is bulging. It also has a darkening of the
board under that capacitor like it has been heating and cooling there.

I can't see any other caps that are bulging, including the
4400uf.
The diodes around that cap are larger than the others on
that board.

Someone mentioned that they had a PDF file for this model, which was a schematic?

It was expressly for finding the problem diodes. But Id
be curious if anyone has any thoughts on this
heit

Showing 1 response by heit

heit OP
1 posts
 
Is there a way to buy or otherwise obtain a replacement motherboard? I have no problem replacing the Cap. Thats easy. But the heating of the board? don't care for that
at all!

I'd love to get some service guide for pulling the board. It LOOKS Daunting, but Ive serviced some ugly jobs in the past and I have some stamina for this job.
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