G05-802 questions

Bigjohn1475

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I just got an asteroids deluxe machine that is playing blind. When I got it the previous owner said that it worked fine then lost the monitor while playing one day and was advised to reflow the connectors. Turns out he pretty bad at soldering.

When I got the board some pads were turn off and it had globs of cold solder on most of the pins. It also had a few burned resisitors r710 r708 r705 and q705 was split in half.

I replaced those and a few other resistors that where out of spec. When I hooked it back up I had a thin line running up the middle of the screen but it was changing with game play. Then the resistors I replaced burned up again.

Now that I messed it up I have read many threads on this monitor and am trying to fix it properly. Hindsight you know.

I've checked the voltage at the power supply and it's getting 63.5 volts with no load. The x and y from the board seem fine on test mode
X ac 4.1v dc -.125v
Y ac 3.5v dc .2v
I checked the bottle caps and the 7xx are bad and the 6xx are good.

So my plan is to go through the 700 section of the board and check every resistor, transistor, and diode and replace anything bad. Then recap the the boards. Is there anything else I should check. Am I missing anything big. This is the first monitor I've done much work on
 
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