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Re: Abrsvcs HELP still out there?
Sorry about the delay, I did not see this posting.
The other speaker configs utilize the surround processing section. In stereo, the surround processor is bypassed. Based upon your brief description, I would think that the surround processing section is producing DC voltage which is detected by the output section forcing the unit into protect mode. This is not a problem that is easily diagnosed remotely. One thing to chech, if you can, is the power regulators on the surround board. Make sure that the solder connections are good. If they are OK, then I would suggest that you get a detailed estimate from a local service shop. Report the results here and we'll work through the actual repair.
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I have the same reciever, and had the same problem. Contact Onkyo, this is a known issue where defective DSP chips were used and manifest problems with a popping / clicking sound when using surround settings. These receivers also have a Dolby Digital input issue that can cause audio dropouts when watching cable or SAT broadcasts that encode DD using a 'newer' broadcast encoding methods. Onkyo is covering the cost of that repair for me now, even though the receiver is 5 years old now....
it could be a failing speaker causing the fault. Disconnect one speaker and run it to see if the problem persists and repeat with a different speaker until all speakers have been disconnected and the unit run to failure. If it stays ok, with a particular spkr off, it's the speaker. If it shuts down no matter which ones disconnected, it's probably a crack on the PCB which expands as it heats and causes shutdown.