In a capacitor (the part of the CRT that stores charge) current is I(t)=C (dV(t)/dt). In most CRTs the C is low enough to be reasonably safe. I've discharged freshly powered off CRTs with my body a couple of times....Hurts for a few seconds, some colorful language is emitted and sometimes reflexes are triggered, but nothing worse.

Capacitors and low current power supplies rarely come close to living up to the simplest form of ohm's law...

You know how Thomson has the remote HV test points next to the focus and screen controls? I was trying to adjust them, wasn't paying attention and stuck a screwdriver in the HV test point with the set on, while touching the blade of course. I'm still here but wow that woke me up!

A REAL KILLER...is the power supply of the average......

MICROWAVE OVEN !!!!

It is "only" around 4KV.DC..BUT it is OVER 300 MA. !!!

WAAAAAAAYYYYYY more than enough of BOTH...to kill INSTANTLY.

It's the joules that determines the last show. I forgot all my physics and basic electronics, for the little I learned. Thanks again.

The only place a modern set will kill you is the AC. If
you got a bad heart MAYBE the HV. I never heard of
anyone killed or directly injured by a TV. Its just part
of the job to get bit now & then. Almost any solid state set
the HV bleeds off in seconds. If you want to play it safe
discharge it, remove anode & run a clip lead from the
wire to ground. When you put it back together discharge
the CRT itself again first.
I got zapped probably once a week for 20 yrs then rarely
for almost 20 more yrs. HV can give you a-fibs for a short
time but they are not killers in them self. The worst
involved AC & set sent me across the room. Give me a
rope or bullet, NOT the chair !

I say this ONLY for modern TV's. Older things & stuff
like transmitters, MWO's etc can be killers so treat them
carefully.

73 Zeno:smoke:

your problem with the set shutting down and coming back on s the solder connections on the SIP board behind the high voltage transformer. The boards have about 7 solder pins soldered to the main board. The diodes on that board have bad connections on them. Unsolder the board, scrape the connections with a knife and resolder them. This was a common problem. It takes longer to slide the chassis out than the actual repair.

Gunslinger - That's it. And what's weird, it will happen sometime and then will work fine for a long time, then just start in again. I'm encouraged. This sounds like what is illustrated in this CTC140 fix at 1:10sec into the video, the standup board near the high voltage transformer : https://www.youtube.com/watch?v=DoLY4ZZYwkY

I'll remember what you said about sliding the chassis out. :-) Thank you much for the tip and I'll be sure to document it and present the results.

Phil

Zeno - good thing i'm not living in Alabama, Florida, South Carolina, Kentucky, and Virginia where the chair hasn't been outlawed....not that I'll be doing anything soon to deserve that nasty punishment. I'll heed your advice. Thank you.

Phil