Ok. IM new. But one of my best buds in RL is Xanathar. And I have been doing the electrical work helping him to get his Star Trek: The Next Generation working properly. Our current issue is that I cant get the backboard lights to work. The J120 port simply does not work. Xanathar had the power board tested and it was given a clean bill of health. I have followed up with a testing of the circuits that govern the J120 port. All were clear. We also switched the J121 connector out and put the J120 connector in. The backboard lit just fine so no problems there.
We are completely at a loss as to what to do now. I could replace all the components but there is no guarantee that would work. Any advice?