The only good thing here is I've found an easily reproducible problem to troubleshoot. In another thread the issue started with bad PSU capacitors then it seemed like a couple of failing speaker relays. But I've ruled out the relays for this particular prob. This AVR may have more than one issue, but this one is reproducible so focusing here seems wise.
When scrolling around an Apple TV home screen, you'll a hear a normal "boop .. boop" sound, produced by the ATV's interface when bouncing from app to app. On this NAD 777, you'll hear it, too. But if you wait a bit before moving to the next app, the "boop" volume level drops to maybe 10% and is often accompanied by a low but audible pop and a little static. It's all happening at a very low volume level. Any further app to app movement gets all the "boops" correct at the correct level. It only happens after about a 5 second period of zero audio signal. It happens on the right and left amplifier modules, across all involved channels. It even happens over the right/left pre outputs. It DOES NOT, however, happen on the TV speakers when the Apple TV is passing HDMI audio through the NAD to the TV.
Is this a possible DSP issue? Or perhaps the PSU isn't initially supplying enough voltage, but it quickly ramps and then works from there?
Sorry to be a bother with this thing.
When scrolling around an Apple TV home screen, you'll a hear a normal "boop .. boop" sound, produced by the ATV's interface when bouncing from app to app. On this NAD 777, you'll hear it, too. But if you wait a bit before moving to the next app, the "boop" volume level drops to maybe 10% and is often accompanied by a low but audible pop and a little static. It's all happening at a very low volume level. Any further app to app movement gets all the "boops" correct at the correct level. It only happens after about a 5 second period of zero audio signal. It happens on the right and left amplifier modules, across all involved channels. It even happens over the right/left pre outputs. It DOES NOT, however, happen on the TV speakers when the Apple TV is passing HDMI audio through the NAD to the TV.
Is this a possible DSP issue? Or perhaps the PSU isn't initially supplying enough voltage, but it quickly ramps and then works from there?
Sorry to be a bother with this thing.
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