G07 works great then shuts off intermitently

tevans333

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Hi, I recently purchased a Ms Pacman that plays blind. I just finished a cap kit on the G07 monitor and it came back to life with a great looking picture. Only problem is that after a couple of minutes the monitor shut off. I took a look in the back and there was no neck glow. I turned the machine off and back on and it worked again. Sometimes I can play several games before it happens, other times it shuts off after a few seconds or doesn't turn on at all. The only thing I noticed was that the horizontal width coil is cracked and busted, but that wouldn't cause this would it? Any suggestions on what to check? Thanks in advance.
 
Hi, I recently purchased a Ms Pacman that plays blind. I just finished a cap kit on the G07 monitor and it came back to life with a great looking picture. Only problem is that after a couple of minutes the monitor shut off. I took a look in the back and there was no neck glow. I turned the machine off and back on and it worked again. Sometimes I can play several games before it happens, other times it shuts off after a few seconds or doesn't turn on at all. The only thing I noticed was that the horizontal width coil is cracked and busted, but that wouldn't cause this would it? Any suggestions on what to check? Thanks in advance.

Check your B+ and look for bad traces or cold solder joints around the flyback, HOT etc. Also verify you have clipped all of your cap leads and your solder joints are complete. Make sure all of your polarities on the caps you just installed are correct.
 
Definitely check your B+. If it's very HIGH or very LOW that means there's another problem with your monitor besides caps.

If it's within ~15VDC +/- of 120VDC that doesn't qualify as being /very/ high or low. I'm talking ~80VDC or ~160VDC.
 
Definitely check your B+. If it's very HIGH or very LOW that means there's another problem with your monitor besides caps.

If it's within ~15VDC +/- of 120VDC that doesn't qualify as being /very/ high or low. I'm talking ~80VDC or ~160VDC.

Thanks guys, I'm going to check that in a bit once my daughter is in bed. How do I check the B+?
 
Black lead to frame, red lead to the wirewound resistor on the left, as you face the back, backmost lead. Make sure the meter is set to DC voltage.
 
You either have a cold solder joint that is failing when it heats up, or hogged out female pins in your power connector...
 
reflow all of the caps and or work that you have just replaced. you either have a cold solder joint or a cracked trace.
 
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