As Is Mitsubishi M-AV1 Audio Video Stereo Receiver 250W & M-RAV1 Remote Control.

Plugged receiver in. It lights up. All controls seem to work. Left amp works when I connected RCA CABLE FROM LEFT PRE OUT TO LEFT AMP IN. RIGHT SIDE HAS TINNY SOUND. REMOTE IS NOT CONTROLLING THE RECEIVER. When the speaker selection button is switched from A to A&B the FM signal cuts out. When switched from A&B to A the FM signal returns. The remote is not controlling the receiver. I put fresh batteries in. It lights and all functions seem to work. For some reason when pointed to receiver, it does not control it. You will need pre-amp jumper pin connectors. The unit did not have them when acquired it.