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To: cripplecreek

I used to be a TV tech and would have fun with coronas on the picture tube anode HV. 25,000 volts (old color TV) would jump a couple inches or so. Some of those tubes would charge up again of themselves after they had seemingly been grounded, I found that out the hard way.


70 posted on 03/22/2005 8:10:42 PM PST by HiTech RedNeck
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To: HiTech RedNeck
My daddy used to work on them. Image Hosted by ImageShack.us
73 posted on 03/22/2005 8:14:17 PM PST by cripplecreek (I'm apathetic but really don't care.)
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To: HiTech RedNeck

Hehe, old time TV tech stories are the best. When I was in tech school one of my doofus classmates decided he wanted in install headphones on an old tv. He found the audio line easily enough. Unfortunately he forgot or did not comprehend the concept of isolate chassis. He compounded his mistake by putting the headphones on and then powering up the tv. Imagine a short rotund redheaded fellow named Tater howling and jumping around with smoke boiling out of his headphones!


82 posted on 03/22/2005 8:28:51 PM PST by flying Elvis
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To: HiTech RedNeck
Oh yeah! The old (early 80s) RCA CRTs were notorious for recharging themselves. It is caused by the phenomenon of dielectric absorption, BTW. You would discharge one of those things, come back 3 hours later to reconnect the anode cap and BLAM! a finger curling arc would blast your digits! After that happened a couple of times, I got in the habbit of connecting a clip lead from the button to the dag ground wire and leave it there until I was ready to reconnect the thing.

(Was also a TV guy back in the day when they were worth fixing)

Nik
91 posted on 03/22/2005 9:01:26 PM PST by Nik Naym
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