did you happen to unplug the memory board itself? perhaps that cable did not go back together well. I assume you pulled the main board out of the case to do the repair.
On Thu, Jun 18, 2020 at 7:00 AM ethan saul <[email protected]> wrote: > Hi, > > I have tested the voltages of the memory on the RAM board, Voltages are > around 3.1-3.2V when the computer is powered off and around 5V when the > computer is on. > > I have taken out the Extra memory it have with no luck. The system has no > extra rom in it. The flex cable is align in the slot. > > But still a black screen. However the contrast knob still doesn’t function > but you can hear interference when the contrast knob is turned but no > effect on the screen. > > I try the beep test, that still doesn’t work so the system must be stuck. > I have re-seated the ROMS but nothing changed. You can hear the system > reset when you push the reset button or turn off or on the system from the > speaker clicking. > > Also some times the board clicks randomly like a 5v relay is going off and > on. > > > > Any ideas, I am sort stuck? > > > > Thanks, > > Ethan >
