DVD player has video but no sound

[netlevi]

I have a 2005 Montana SV6 with a built-in DVD player that is mounted to the ceiling and a display that flips down. It will show video, but no sound comes through the speakers or through the IR headphones (headphones set to channel 1) when playing a DVD.

Do any of you know how to fix this? I read elsewhere online that reprogramming the radio with a GM tech II tool may fix it (i.e. the RSA is turned off), but I don't know if that's the case.

FWIW, if I use the RCA inputs to feed audio and video, it works, just not through the factory DVD player.

 

[netlevi]

I took the DVD player out of the van and dissected it, looking for any fried parts on the circuitboards. I totally removed the topmost circuitboard (that has the clear plastic cover over it), unplugging all of the wiring harnesses connected to it.

After I didn't find anything obviously wrong, I put it all back together and hooked it up in the van again. After that the sound works!!

 

[moegreen]

How did you get the dvd player out? My player doesn't work and I want to pull it out but don't want to mess anything up in the process.
Thanks.

 

[netlevi]

There are two screws behind the screen when it is flipped down and one wiring harness to disconnect. It should pop right out.