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[email protected] makolber@yahoo.com is offline
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Default Use of non-screened transformer in old monitor



So, the 60 Hz magnetic field leakage from the new transformer is beating against the 62 Hz (or whatever)
vertical sweep. Magnetic field from the transformer reaches through the
glass into the electron beam path..

A conductive belt around the new transformer (can be made from copper tape, and soldered
at the seam) would be a good start. Reorienting the transformer (if possible) might help.
If the original transformer was shielded, now you know why...



+1
you may have a magnetic field problem, not a circuit problem.
Try moving and re -orienting the power xformer relative to the CRT.
Often you can find a null point.
Otherwise you need mu metal shield or copper strap bucking turn.

m