Hey everyone,
Just because I was curious, I decided to remove the translite on my Doctor Who machine (which currently works 100%) and check all test-point voltages on the driver board.
Something came back curious.
My DMM told me TP8 is spitting out only +17V (more like in the high +16V actually) instead of the +18V mentioned on the pcb and the schematics.
The Doctor is running perfectly and so I was wondering what such a drop would have on the game? The schematics tell me that the +18V go to the lamp columns. There are a few lamps that are out but I haven't bothered with replacing them yet (a 555 on a pop-bumper and one 555 on the pcb for the Extra Ball lamps).
Hmm...
A +1V drop sounds pretty damn important if ya ask me.
-Bob