Since returning from vacation in February the volume and mute controls on the FIOS remote control have not worked. I can adjust the volume and mute the audio using the Toshiba television remote control. Today I accidentally hit the "channel up" button on the Toshiba remote instead of the "volume up" button, causing the channel on the TV to move from, I think, from 3 to 4. Now I get only "snow" regardless of the channel selected using the Toshiba remote. How do I get my FIOS back on this TV?