Hi Freq noises could be from the SMPS, LOPT, YOKE, various inductors and
even ferrite beads within the tele. Definitive diagnosis necessary to
determine what is causing the annoying noise. BTW you probably are seeing
glow of the kine filaments.
"Barry" wrote in message
...
I have a television which has begun to emit a high pitched sound. It comes
and goes but mostly it is present. Peering in through the gaps in the case
I
can see something glowing. Is this normal?
Could dust or something be causing the problem?

Any help would be appreciated.