Unplug the RCAs and check the resistance between the shield of the front RCAs (and the rear ones too) and the empeg's case. This should be 0 ohms. If it isn't, that's a sign that at some point, the ground connection to the empeg wasn't connected and the empeg tried to ground through the audio grounds (and burnt them out).

We've thickened up the tracks on later issue empegs, but this is a sign of an install problem - it will never happen on a correct install. If your unit has blown tracks, we can fix it very easily if it comes back here.

Hugo