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Discussion in 'General Electronics' started by Stan, Oct 7, 2003.

Oct 7, 2003 #1

Stan Guest

Hi Group, Can someone help please, I have an Advance instrument
Oscilloscope ser#02123, that is giving a fat beam, about 3/8 of an
inch thick, I tried to adjust the astig. and thats about all I can
reduce it to. so, any info on this matter will be taken seriously, and
you will be rewarded with my sincere gratitude, thanks, Stan.
Oct 8, 2003 #2

JeffM Guest

You may be having problems with the focus circuit,
usually a moderately high voltage applied to a focus grid on the CRT.
Got a HV probe and a schematic?
Oct 9, 2003 #3

Stan Guest

You may be having problems with the focus circuit,
usually a moderately high voltage applied to a focus grid on the CRT.
Got a HV probe and a schematic?
Click to expand...

I don't have a probe or schematics, I trace the leads to the
astig.pot, and I got 165v, to high...?
Oct 10, 2003 #4

JeffM Guest

We can't pull this stuff out of our asses.
You need manufacturer's data.

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