I don't normally ask for help but i have met my match with this Wells Gardner 14K3101 / megatouch Type-67 (I think similar to U3100).
When i first got it, it would warm up and go into shutdown, B+ was 127 Volts. i adjusted to 98V.
it had a red tinge and pincushion.
I replaced all electrolytic caps with new.
red tinge was gone but still pincushion both sides.
This is when i noticed that H. Size / trap / pincushion / pincush coil (L1) have little or no effect on display.
I found D3 shorted and C4 failed. I replaced both.
I then re-flowed all solder joints on main and neck board. no change.
I pulled L1 and tested, also checked board traces back to Q1, Q2, Q3.
This monitor is from a Megatouch and i have found other posts with the exact same problem yet i haven't found any fix. any help would be appreciated.
Thanks for that info. Ill check back in with you in a few days to see if you are able to test it with that q tester.
I am in ontario so nice to know about your website.
I am also going to look around to see if i have a tube and yoke that i can try to see if i get any adjustments. I was only thinking of the chassis so im grateful for your suggestion.
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