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half_pint
 
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Default TV tube, hissing, fizzling crackling noise, arcing.


"bloggs" wrote in message
...
you may also notice an odour/smell from the back?
when the high voltage burns the air it produces ozone....

Not really, I smoke and I don't think there is much ozone


dust is attracted to eht & dust attracts & moisture can cause eht
leakage...

i would just try cleaning/dusting around the crt hv lead (no cleaning
liquids just a non conductive duster etc.


Smoke makes the dust sticky!!

we used to 'seal' leaks using silicone..this may only mask the problem?
if you take to back off the tv and turn it on provided the room is
dark...you might be able to see the eht leak?


Yes I could see it, tiny blue lights, looked pretty, link
a minnitued thunder storm.


just remember the fault could be from an excess of eht!
BEWARE!


Yes I was also thinking that!! And I wondered if 'fixing' it
might make it worse, by allowing the ht to discharge into
the air I may be safer!!
I put some tape over it which helped, but sometimes I
get a high pitched 'whistle' now.




good luck!
"half_pint" wrote in message
...
I have a TV which has the above problem.
The picture and sound are fine, prefect however
I get the above noise from the back of the tube (sometimes).

The noise originates from where the big high tension cable
attaches to the tube, on the back near the top (not the
thin neck but the big dome 'bit'.

There is like a big round 'sucker' (plunger shaped thing)
where it atttaches to the tube, this has a lot of (well a fair bit of)
black 'dust' on. I can see some blue 'arcing' on the 'sucker type'
thing which the cable is attached too. this is where the niose comes

from.

I only get this in hot weather I think, patricularly humid weather,
opening a window and letting cold air in seems to stop/reduce
the noise.

Any ideas, would brushing away the 'dust' help? (Actually
some of the dust seems to have been 'burnt away by the arcing).

Sorry if the techinical terms are not very technical, and spelling is
bad (in a hurry).

--
half_pint.