I had a Series 2 w/ a bad power supply (blank screen, single light on on front of unit). Bought a weaknees replacement p/s and it powers up and gets to the Now Playing screen. But now it's not responsive to the remote. I've read about issues w/ loose ribbon connections to the front panel but I'm quite certain no issues there - the P/S swap out was a breeze and of course seems to have fixed *something* given now at Now Playing. I have changed the batteries, flipped the 1 / 2 DVR selector switch on the remote; the remote lights when pressing buttons. Before I throw in the towel (and my wallet) what else can I try?