Hey,
I was playing Galaga the other day, and the monitor went blank. I looked closer at it, and I hear HV initially, but then it shuts down. The B+ is too high. I assumed it was C511, and the caps looked old, so I did a cap kit, but that didn't fix it.
So, I followed the flow chart, pulled X701, and it comes back to life, so it says to check all 900 components. I've never personally come across this problem, but I went ahead and resoldered all 900 components (some had bad looking solder joints), checked the active 900 components, but didn't find anything bad, and it still doesn't work.
I checked some of the resistors, and I'll go back and check the rest... but does anyone have any suggestions on what to check (common problems, etc)? The voltage regulator isn't a 900 component, but would that cause this problem? I'm just looking for ideas so I can hopefully fix it tomorrow night.
Thanks,
DogP
I was playing Galaga the other day, and the monitor went blank. I looked closer at it, and I hear HV initially, but then it shuts down. The B+ is too high. I assumed it was C511, and the caps looked old, so I did a cap kit, but that didn't fix it.
So, I followed the flow chart, pulled X701, and it comes back to life, so it says to check all 900 components. I've never personally come across this problem, but I went ahead and resoldered all 900 components (some had bad looking solder joints), checked the active 900 components, but didn't find anything bad, and it still doesn't work.
I checked some of the resistors, and I'll go back and check the rest... but does anyone have any suggestions on what to check (common problems, etc)? The voltage regulator isn't a 900 component, but would that cause this problem? I'm just looking for ideas so I can hopefully fix it tomorrow night.
Thanks,
DogP