swinks,at least i have narrowed it down to connectors or assosiated wiring.i spent hours chasing a fault on the cpu that wasn't there.i believe its called"chashing ones tail" thanks for the pointer nino.will buzz out the wiring tommorow.
Follow the lamp driver schematic and measure the 5 Volts and GND. I've seen "issues" when the lamp driver board is not screwed into the grounding / mounting bracket.
From memory - Test Point 3 is +5V. That comes in at J4 Pin 3. Check inside the connector for any corrosion, or if the pin is in fact broken.
Pin 24 on U1, U2, U3 and U4 will read +5 Volts. It is a very simple board to fault find.
