I have Onkyo TX-SR605 receiver that was working very well until I was required to take a prolonged business trip (approximately 3 months). Upon my return the unit passes video without any problems, but I can not pass audio to the speakers from any source, including the tuner, which is as straight forward as you can get. Cabling looks fine, and the speakers were tested on another unit and are working as well.
It's often a problem with some of the 256 soldering legs underneath the Digital Sound Processor (DSP). Need to be fixed at a service center. This is a problem I've only seen on Onkyo products.
Same problem. Does the internal Cooling fan turn on?
Register and download the manual for free at retrevo.com
http://www.retrevo.com/support/Onkyo-TX-SR605-Receivers-manual/id/2526bh742/t/2/
Page 61 - the Surround Button
Also see page 85 Digital Input Formats
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No fan activity.
same problem. left for a couple of months. video fine but no sound from any source. checked cables. checked speakers. checked dvd, xbox, etc. all work when i plug directly into tv.
Turn off receiver, and notice when turning back on the number clicks you hear, you should hear one set of clicks when you first turn on, then 4-5- sec latewr you should hear another set of clicks, my guess is that you never hear the secound set of clicks which means you have a defective hdmi assembly. This is very common with Onkyo Products
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