Re: Severed CRT necks on Old Zeniths

Zenith was not the only company suffering that symptom, Magnavox has a slew
of them as did some of the Japanese companies. Seen it also on a few
projection sets when the same scenario seems to happen, crt arcs thru the
glass beneath the yoke and severs the neck. Open the front of the telle up
to find the crt board, crt neck, deflection and convergence yokes either
setting on or embedded into the circuit boards bellow the defective crt.
Occasionally the face of the crt will also be broken allowing the coolant
fluid to no a nasty wash job on everything physically south of it. What a
fun job, Eh!!
"Ol' Duffer" <DontSend@xxxxxxxxxx> wrote in message
news:MPG.1db7603ee2fea8ad989711@xxxxxxxxxxxxxxxxxx
> In article <Qfg3f.107989$Ph4.3288922@xxxxxxxxxxxxxxxxxxxxxxx>,
> zappymanREMOVETHIS@xxxxxxxxxxx says...
>> The discussion of exploding TV's (from lightning strikes) recently came
>> up
>> on a forum at www.mythbustersfanclub.com. I've never seen a TV explode,
>> but
>> I have seen a couple of old Zeniths (from the mid to late 70's) with
>> severed
>> CRT necks. Anyone old enough to have worked on those should remember the
>> scenario; the HV soared way out of regulation, and the neck of the tube
>> eventually sheared itself off. Well I decided to post that knowledge of
>> mine
>> in the thread, and some of the group regulars (including one experienced
>> technician) basically think I'm making it up. I tossed those broken CRT's
>> years ago (who keeps broken CRT's?) so I can't exactly "prove" this
>> story.
>> But maybe someone on here can back me up. I'm sure some of you still
>> remember this unique problem.
>
> Yep, usually caused by safety cap failure. High voltage punched
> through the tube glass. Saw one that sucked the entire electron
> gun into the tube, leaving the yoke hanging on a piece of tape.
> 'spensive repair caused by a cheap part...


.

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