WG K4900 issues in a Qbert

Robotron Jon

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This is in a Qbert.

Monitor has been capped and resoldered in the usual spots. But it still looks slightly out of focus/fuzzy.

Any ideas on what could be causing it?

Thank.s
 
Assuming you have tried adjusting the focus, turned down the contrast a bit, checked the focus pin on the neck isn't bent or broken, checked the wire to the neck socket from the flyback is on good, and made sure you have no bad solder on either the flyback or neck socket - then you may just need to remove the bezel and clean the tube face and inside surface of the bezel...
 
Do you get any result by adjusting the focus pot? If not, then I'd look at the connection of your focus wire to the neck socket. I had a socket once that the pressure fitting gave out, and I ended up having to solder the focus wire on directly. Then I got my focus back.
 
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