Here's what I have. When I turn on my Close Encounters a few of the bonus lights are lit on the playfield and the cpu won't boot. If I turn the power off and on several times(sometines five) those lights are out and the cpu boots and the game plays fine. I've done the ground mods, the slam switch bypass fixed the conectors,new power supply. I know it's nothing to do with the driver board. I've checked the voltage at the test plug and it is supposed to be at about -12 and go to 5 about a second after the power is turned on. well it's at like -9 and goes to about 3.5 and I know the pinball repair site suggests replacing I think q25-26 in the reset but I think the problem may be in the input to the power supply at pin 6-7 it is supposed to be 69 ac ,but i'm only getting 34-35 ac at both pins and I know this input comes from the small transformer in the bottom of the cabinet And I believe the 69 volts ac controls the logic on the cpu so if I'm thinking right this could be what is causing my problems .Question is do you think it's possible for the transformer to realy shoot craps like that and give a lower voltage. I'm not very good with the SS pinball machines yet I'm mainly an EM guy. I'm just sick of turnning this thing off and on a bunch of times to make it work.
Glennon
Glennon
