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<mrdarrett@xxxxxxxxx> wrote in message
news:1150148270.947703.286620@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Would the degauss coil be activated on TV shutdown?
>
> The TV was working fine last night - I shut it off around midnight this
> morning (Star Trek reruns were on ;)
>
> I guess I'll be seeing a higher electric bill this month... sigh...
No, it turns on - briefly, if things are working correctly -
right after you turn the set on. Its purpose is to remove
any "stray" magnetism from the CRT and the supporting
chassis, which otherwise would affect things like the color
purity, etc..
It is literally just a big coil of wire, usually covered in black
plastic or some such, which is around the outside front
edge of the CRT itself, and which likely plugs into the
rest of the set on the same PC board as the AC power
connector or the "front end" of the power supply. There
is likely a relay involved, but certainly there is SOME means
through which the coil is energized for a few seconds when
you first switch the set on (when energized, it's directly across
the AC line), and then is switched off and the rest of the TV
allowed to power up normally.
IF the coil is left on for a long period of time, it will probably
cut itself out - permanently - as there will generally be a
"thermal fuse" that's there to prevent the coil from overheating
and doing something really nasty. In any event, I would not
be leaving the set with the power switch in the "on" position
unless it IS working normally.
By the way, if you are NOT comfortable working around
high-voltage electronics - and there are some serious voltages
within a TV set - don't try playing with this on your own.
Find someone who knows what they're doing around TVs.
Bob M.
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