Panasonic TH-50PX75U

[rwagoner]

Hello! I am wondering if anyone knows which board controls the audio in this old plasma TV. My son got it from my sister, after it sat for a long time to use with his video games. It worked for a few days, then suddenly one day had no sound. Checked settings, left unplugged for a few weeks, tried different inputs including the TV tuner itself ... no sound, and no "click" noise when adjusting the volume (not sure it does that but assume it does. Picture still good. Worth repairing?

Could being left outside overnight after playing one night have shorted something from moisture?

Thanks, as always