While you have the board off replace the caps C6 & C6 ( 10,000uf 20Vea).. also C7 ( 0.33uf) D4 ( 1N4003) R12 ( 100 Ohm) and lastly C8 ( 0.1uf)... this is your smoothing cct and also feedback cct to 5V regulator... this will clean up the 5V and smooth any ripple out.
I replaced all the above components and all Test Points remained the same as before, with TP5 still 67v.
Then i unplugged this great big capacitor that is screwed to the side of the cabinet. i had not read or seen any thing about it in the schematics, unplugged and turned machine back on and the 67v has come down to 43v.
The game still wont boot though.
The two Brown wires at CN1 pins 3 & 4 are supposed to be 10v AC, I get 0.02 on AC and -5v on DC.
Ian
Will put a pic up of the large CAP soon
