Weird G05 Problem, Please Help

Before I get into my problem, I just noticed that the g05 manual on spies is different than the ones I have. Is the other manual available somewhere also? I don't have it with me at work for the looking up the components that failed, although there is a single .gif on gamearchive of the deflection board. If it has not been scanned in already (which I kinda doubt), I will scan it sometime over the next few days if time allows and send it to David Haynes and Al Kossow for them to put online. Does anyone have value for this? Anyway, on to the problem at hand...

I am having one hell of a time trying to get my G05 to work. Here is what I have been through so far: When I first got the machine a couple months ago, I fired it up and it had no Y deflection. I installed a cap kit (including the chasis transistors). The problem was still there. I looked on the board, and there was one visibly fried resistor R610. Replaced it with no luck. Using my remedial skills, I managed to locate several dead components: R620, R610, Q603, Q605 (replaced in that order). I replaced them along with all of the 470 ohm resistors and all of the TIS98 transistors (I even desoldered and tested every resistor in the R600's). I also swapped the yoke wires and it was fine (just gave vertical deflection at that point). The pins in the AMP connector from the main board were falling out so I replaced them. When I replaced Q605 and tried it out (I couldn't find any other problems), R618 and R613 were killed with extreme prejudice. I verified that the voltag!
!
es from the power supply were correct, and the game plays fine blind. The x, y, and z outputs tested good too (slight low voltage swings).

What is the best way to track this down? FWIW, I don't have a scope to play with.

Thanks for any insight!

Jon
Received on Mon Jul 19 11:02:31 1999