I've got an intermittent problem on a 27" Sony TV
KV-27S36 where the picture "rolls up its eyballs"
and then goes blank: The bottom of the screen
goes blank first, and an up-shifted picture shows
at the top 1/4 or 1/3 of the screen, with scan lines
becoming coarser toward the bottom of this region
and then dark below. This situation twitches and
flickers for several seconds, then all goes dark.
Cycling power off and back on (after say 10 sec)
almost always restores the picture, sometimes
for hours.

The problem does not always arise on every
viewing session.

It does not seem to be particularly temperature
sensitive, in that spraying "duster" air-in-a-can (which
can come out quite cold!) on suspect areas seems to have
zero effect.

Poking parts with a stick also seems to have no effect
once the problem starts, but after the problem goes into
remission (after power cycling), poking at the HV cable
where it emerges from the flyback brings the problem back.

Assuming that there is something flaky about that connector,
I thought I'd just inspect and repair or replace it. But the
cable only wiggles up and down slightly, and I am uneasy
about giving it a serious yank. So, is this supposed to come out
with a yank, or is there some secret? What sort of connector
is down in the hole?

Many thanks for any help and advice!










Bob Masta

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Scope, Spectrum, Spectrogram, Signal Generator
Science with your sound card!