19k4906 Ms Pacman Acting Up after moving

This is usually caused by cold or cracked solder joints on a 4900 in the vertical corner of the chassis.

Remove the chassis and reflow the solder to the two large white transistors that sit on the back corner of the chassis. Also reflow both vertical transistors while you have the chassis out. They are the transistors attached to the two metal things sticking up from the middle right of the chassis.
 
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seems pretty dirty there

i also noticed on the board a section that is pulling up from the board
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is the board worth trying to fix. how do you clean it up when it is corrison is liek that?
 
That is NOT corrosion, it IS flux and can be cleaned off using 90% or better Isopropyl alcohol.

Nothing wrong with that board that can't be fixed very easily.
 
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after i cleaned it up.

it doesn;t appear to have cracks or anything. i am concerned where it lifted of the board in my second pic. what are my options?
 
so since there doesn;t seem to be any crack in any joints what should be my next step at resolving the issue?
 
so should i just hit every solder joint on the board? is there a way to guage it? i am GREEN when it comes to monitors.
 
Yup he's right on it's either a bad solder pad somewhere around the outside edges or it also could be the vert transistors i'd just replace them if you can that way they're not 30years old. also do a cap kit too. If no luck you can send it to me also. I just went through like 10 of these and am still pretty familiar with them.
 
so since there doesn;t seem to be any crack in any joints what should be my next step at resolving the issue?

I think you have missed the point here. Remove the solder from the two big white resistors and replace it with new solder. Same for the two vertical transistors.

Most of the time you will not be able to see a cold solder joint.
 
Fixed! Turns out there WAS a small crack. See if you can see it in the photo below before scrolling down:

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See it? It appears that someone or something banged into one of the heat sinks for the vertical deflection transistors, causing enough stress to crack the board.




I've circled and drawn in the crack below:





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Crack has been repaired and picture is back to full size. Installed a cap kit while I was at it (partial one done last in 4/94) and it looks very nice now...
 
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