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Old 4th January 2013, 05:28 PM   #11
Ketje is offline Ketje  Belgium
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Quote:
Originally Posted by Enzo View Post
Ketje, I see you are Belgish, but what is wehnelt in English? I get the idea, but wonder the translation.
Why not Google for wehnelt,it's well explained in wiki
Mona
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Old 4th January 2013, 11:14 PM   #12
Enzo is offline Enzo  United States
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Gonna make me work for it, eh?


Oh.

almost six decades in this business, and I never heard the term. I used to service tons of video displays too. Sorry, I thought it was a Flemish term you were using. My apology.
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Old 5th January 2013, 12:22 AM   #13
eyoung is offline eyoung  United States
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Hello All...

Just in case someone has not mentioned it crt o-scopes usually have high voltage in places some in excess of 1000V and can be fatal.that said be careful
where you poke and prod...

Regards, El
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Old 5th January 2013, 03:05 PM   #14
CSlee is offline CSlee  United Kingdom
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Thanks El - Ive had enough shocks to be very careful.

I filed out the track between the pins of the arcing (for lack of a better term) component and it seems to have solved the problem for now. I do not know enough about the circuitry to analyse it any further but hopefully it is solved.

Thanks to all for your help - learning a lot!

Cheers

Charlie
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Old 5th January 2013, 06:09 PM   #15
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Quote:
Originally Posted by CSlee View Post
Thanks El - Ive had enough shocks to be very careful.

I filed out the track between the pins of the arcing (for lack of a better term) component and it seems to have solved the problem for now. I do not know enough about the circuitry to analyse it any further but hopefully it is solved.

Thanks to all for your help - learning a lot!

Cheers

Charlie
To keep the problem away try coating that part of the PC card with a clear lacquer. A pencil eraser is a good tool for making sure all the carbon arc smears are removed first.
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Old 5th January 2013, 10:36 PM   #16
CSlee is offline CSlee  United Kingdom
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OK thanks. I am assuming that this was the fix for the problem the first time with the previous owner. And the 'arc smears' as you say have redeveloped..?

I hope it is a good fix for the scope as I do like it, and we were not both doing a bad job..!

Charlie
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