Hello all,
I've got an Onkyo TX-DS797 here with a complaint of 'no output'. Well, it works ok with the internal tuner, or an analog input, but not the digital inputs. If you connect a CD player to the coax input, the display shows "PCM DIGITAL" which goes out if you pull the coax cable, so the unit at least knows there is a signal there, but no audio.
Any suggestions?
Thanks! Tim Schwartz Bristol Electronics
Maybe a bad DAC feeding the output stages or a bad mode-switch IC? Scope for signal out from the DAC and signal out at mode-switch IC in PCM DIG mode.
Just a thought..... I've seen several lately, including Onkyo's, where resoldering the large postage-stamps on the DSP board brought them around. It's tedious, but it might be worth a try. I'll hit it with a heat gun first - if is starts working after a bit I know I'm on the right track.
Mark Z.
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