Re: gEDA-user: Any TV repair gurus lurking?

[Dan McMahill <dan@xxxxxxxxxxxx>]

Peter Clifton wrote:
> On Fri, 2007-12-21 at 15:26 -0500, Darryl Gibson wrote:
>> Ian Chapman wrote:
>>> The last time I fixed a TV I resoldered all the joints on the nec board.
>>> That's the round thing on the end of the tube.  I found it by wiggling
>>> wires.  Try moving the wires on the horizontal deflection coils looking at
>>> the screen with a mirror.  Do not worry about the high voltages if it was
>>> not dangerous it would not be fun. After all it's only a TV not an X-ray
>>> machine or a WWII radar.
>> Umm, it is an X-ray machine, or they used to be. I haven't been inside a
>> TV in years, but don't the still carry X-ray warnings inside the chassis?
>>
>> A TV can hurt you, be safe, and watch out for that large red wire hooked
>> to the picture tube. It will "jump" out and say hello to you.
> 
> I _nearly_ learnt that the hard way once, removing an anode cap.
> Something told me to ground it just as I was starting to peel back the
> rubber. I pulled an inch long spark off it ;)
> 
> I've fixed TVs and CRTs in the past.. just wasn't sure how to think this
> one through to a likely part to prod. (I don't have a scope where I am
> here).

By far the worst shock I've ever received was 23 years ago working on a 
Fender Bassman that was unplugged.  I will *never* forget to discharge 
caps again.  Especially ones charged up to 500 volts.  Thats one of 
those mistakes you won't make twice.

-Dan



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