Sorry about that. My model is a 3801. I am just simply pushing the "test tone" button on my remote, and if I go through the on-screen display still nothing happens. Upon trying to rectify the problem last night I noticed that I have a hum coming from my speakers on either setting (stereo/7.1). It's odd because the hum wasn't there last time and I haven't made any changes. I tried unplugging my sub, my satellites coaxial input, and moving my components plugs around without any success. The hum stops when I turn either my amp or receiver off. It also stops if I mute my receiver or change the input to PCM (no audio though).

Sorry again about the ambiguity. I was in a hurry.

Thanks for your help

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