I have an onkyo TX-DS777, I don't get any audio at all through any of my speaker terminals. If I plug in headphones, and turn the volume all the way up, I can faintly hear radio. I didn't try speakers turned all the way up so I guess that may work too. Either way I suspect this means that the amplifier(s) has failed, and that perhaps the other functions work fine. Is this something that can be repaired?
Are the speakers selected for A or B or AB check the speakers by using a 1.5 volt batter on the cable going to the speakers, if you get a sound from the speaker, you know they are ok, if not, speakers are faulty.
SOURCE: Onkyo receiver TX-DS777
You have a bad amplifier left or right whichever pops if both sides pops then it both amps
SOURCE: my onkyo tx-8222 suddenly stopped amplifying on
Never use maximum volume for troubleshooting. The errant switch or control that you eventually find and flip will suddenly release the amp's full power and you'll destroy your speakers. If a signal isn't audible at 1/2 volume it's probably not there. There is a good chance that a common control may have developed a high-resistance or 'dead' spot through idleness and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.
Look for a misplaced Mute or Tape Monitor control or Multichannel Analog Input selected.
Turn the volume to something reasonable and see if that helped.
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