510 no live video/audio ? Recorded OK

[mrrrl]

I have a 510 that was unplugged for several weeks as we moved. I plugged it back in and now I don't have any live video/audio either out of the composite, RF or s video connections. I get the guide and all the menus, just no video or audio. All the recorded stuff is just fine. It's running p360 software. I have done several resets, switch tests, unplugged for an hour, reset the card, default factory settings... Have switched it out with another unit and it works fine, so it's not the sat inputs.

Any ideas?

TIA