bz writes:

"William Sommerwerck" wrote in
:

In this case, why should bad solder joints on the tuner case produce
these visible effects? All the book-learning is not going to help much.

Perhaps the tuner case provides a good ground path for a bypass capacitor
in the vertical sync circuit?

No need to speculate on this one.

See: http://www.repairfaq.org/sam/rcatune.htm

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