bally game maker, 7200 board. took the monitor to a local monitor repair guy. he wrestled with it a while and thinks its good. he had to make a plug to hook up his test generator, mumbled something in russian about not knowing the exact frequency. sometimes with the test generator the screen looked ok, others i could see the vertical black band, but not a prominent as in the pics. i tried another game maker mpu board, same exact image . adjusting pots dosnt help.
should i try to re-cap it ? send the chassis out? there is a little side board that i assume is for the touchscreen? i has to cut a 3 wires from the chassis to that board to remove it, there was no connector. i will make one.
also, i didnt notice till after, the yoke connector has two positions on the chassis. i think it was on the top one, they are more shiny, but doesnt it matter?
thanks