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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
sbaggy
1 posts
 
So if not the Arcam AVR then what, NAD models? If so what is equivelant in an NAD to the AVR 400?
zydo's avatar
zydo
242 posts
 
This is an old post, but I'll chime in anyway. The Arcam AVR 400 is super dependable. I'm a dealer, and have not had an issue with any I've sold. The 360 is the same. The 600's that have the updates are dependable as well. They and the 500's had issues in the beginning. I've used a 600 for the better part of a year, at home. It never missed a beat. Not anything like the early models mentioned. FWIW, I have an entire system at home and love it. (Amp, pre/pro, DVD/CD player)
jonross
1 posts
 
Thanks for this folks! Was considering a used 350, but now ... not.
bambooken's avatar
bambooken
4 posts
 
I'm going to try to revive this thread by adding my troubles with my Arcam AVR350.
All digital inputs result in speaker abusing, crackling static with a tiny bit of actual sound output blended in. I've found one other person with this problem and they were told (back in 2013) by Arcam that a few diodes need to be replaced. 
My problem is that I cannot find any repair place that can do the work. I'd be very grateful if anyone out there has a referral for me and / or similar experience. 

TIA
bmdduck
99 posts
 
Look up Condor Audio (in Israel).  He offers repair service on Arcam AVRs and his web site has a very good tutorial on his repair process.  He will also sell you parts and provide instruction if you want to DIY.  I repaired my AVR300 with his parts and instruction which was very helpful.

Good luck repairing yours.

bmdduck
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