I had my first sour ebay experience in about 30 transactions. I needed a preamp with built in tuner and remote; found a Nad 712 locally with preouts, remote capability, tuner for a very good price (so I thought).
When plugged in and turned on and in standby mode "mute" flashes on the led screen and once turned on, none of the functions work. The volume knob lights up, the function buttons appear to work, etc., but there is no sound output, the led is dim to the point of barely readable unless a couple inches away, etc.
I contacted the seller; it doesn't appear he is able to do much. This is a stereo receiver with pre-outs, not a true preamp. . . he told me to ship both the receiver/preamp so he could test it out. . . so he doesn't even realize it can provide it's own power and doesn't need the amp at all to function.
Any help is greatly appreciated. I would think it's just stuck in "mute" mode, but the fact that "mute" flashes when it's in standby mode let's me think it's more than that. Once turned on, mute is no longer on the led.