Hello, all. After 11 years of trouble-free operation of the subject TV
the following has occurred within the last two weeks:

The set would periodically lose vertical sweep (single bright horizontal
line). Vertical sweep would often be absent upon power-up. Lightly
bumping the cabinet would often restore the sweep for the rest of the
evening's viewing but return the next day.

The set finally quit altogether with the power cycling endlessly on then
off until the line cord was unplugged. There was a very pronounced burn
smell emanating from inside the cabinet.

I removed the back of cabinet and as best my olfactory sense could
determine the burn smell is coming from what appears to be the RF
enclosure of one of the tuners (the set has two). There does not appear
to be any evidence of burned components elsewhere on any of the three
circuit boards.

Why the tuner would have anything to do with vertical sweep failure is
confounding. The suspect RF enclosure/assembly is located at the top of
the following vertically-mounted circuit board, which is marked (on its
underside) as follows:

At top left of board - JVC PWS 96.5.20 SOMEYA

At bottom of board - CKF0426-AS1-1 CMK-81X

Any help in facilitating repair would be greatly appreciated. Thanks so
much for your time and comment. Sincerely,