Just picked up a LAH and the DMD has garbage on the screen. I have tried different known good ribbon cables and same result. I checked voltages and everything is good except the 68v. it is at 78v. The game does have a brand new rotten dog ps and all test points are proper. Does the voltage run straight to the dmd from the ps? what could cause it to be 78v at the connector? will that harm the dmd?