twobad
New member
I have a WG K490x chassis that I did a cap kit on last month. Picture was greatly improved. My son was playing and the screen "collapsed" to the center (see pics). A nice guy at the arcade controls forum suggested it might by transistors Q302 or 303. Both are intact (no broken legs). While inspecting them I found I had a cold /bad solder joint on C313, I reflowed it and was up and running again. After an hours solid play a hard push on the joystick caused the screen to collapse again. I suspect it's another cold solder joint as nudging the machine causes the picture to "fill out" and then collapse again immediately.
Is there a way to measure the C B and E legs of the transistors with the chassis removed/depowered to see if they are good?
If so, what should the measurements be?
From the attached pictures, can anyone tell which component might be the culprit?
I don't mind reflowing all the joints but I also dont want to stress- mess up a trace on the PCB... the relatives are in town for the holiday and everybody wants to play MsPac.
Sincere thanks,
-=T=-
Is there a way to measure the C B and E legs of the transistors with the chassis removed/depowered to see if they are good?
If so, what should the measurements be?
From the attached pictures, can anyone tell which component might be the culprit?
I don't mind reflowing all the joints but I also dont want to stress- mess up a trace on the PCB... the relatives are in town for the holiday and everybody wants to play MsPac.
Sincere thanks,
-=T=-
