TV/Radio Problems on House system

[colemole]

I have a Journey 36G 2004. The radio works fine while traveling but when we are parked and engine not running, House power switch is on, which I leave on all the time unless the coach is in storage, Radio has power but no sound through speakers. Speaker switch is on radio. Speakers also don't work when in TV position. Just get sound from the TV and not speaker system. Found a 2 amp fuse gone on a inline fuse below radio accessed through small storage door beneath radio. Thought maybe that was it but still no success. Any suggestions would be appreciated.