AVS Forum Special Member
Join Date: Dec 1999
Location: Big Canoe, GA, USA
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There is known issue with the Digital Audio bard, and that is the small caps on it get cooked and fail over time. The hotter the unit is allowed to get, the sooner they fail. In my case, after 6 years of 25Hrs a week usage in an air-conditioned room (dedicated 1-ton AC set for 70F in a 15x5' equipment room) and 8" clearance above the AVP, my rear channels started to go out after 30 minutes or so of being on. The local authorized repair shop could not fix it, but then they did not replace caps. Board level repairs are performed only at United Radio (or something like that) in NJ. So even though there are no more spare audio boards (in the US), you could get your existing board repaired with a cap swap (assuming none of the DSP chips or other supporting chips fried).
BTW- I have a spare digital audio board if someone is interested. I had bought it as a NOS from a dealer closing, but the repair shop said it didn't work when they tried it in mine. I suspect the repair shop did not get it set up right, as the board looked pristine.
So units where the board fails more than once would not be a surprise to me, and I bet they had thermal management issues in the install. There is a series of posts in this thread of one user installing a fan inside the chassis to blow air horizontally across the digital and video boards. Bet if that had been stock, we'd not see these failures this soon.
A shame, as otherwise, this is a beast built to last a decade or more. But it's the newer tech bits that usually bite vendors.