A few days ago, my stereo just stopped producing sound. It's on and working, but no sound is heard. If I turn it off a few times and back on, the sound comes back, but it goes away after a few seconds. Sometimes, I can get the music playing for about a minute, but after that, the sound just goes away out of nowhere. I can see that it's reading a cd or that it is on a radio station, but no sound is heard. I checked the fuses on the stereo, but they're fine. Any ideas? I have a Clarion VRX935 VD. It's the monitor type.