Re: Size of CRT screen keeps changing - loose connection?

Question

"Jon D" schreef in bericht news:9733593903CA171E5D@...

Hi guys. I need some specilist help here.
>
> I am in the UK. The size of the visible part of the screen on my
> 17inch CRT monitor on my desktop PC keeps changing slightly.
>

I have had this problem with a Compaq V70 monitor, and only at certain refresh rates.

The problem was a "broken" resistor (33 kOhm in my case) within the horizontal deflection circuit, after using cold spray (or air upside down) the problem was pointing to this one resistor.

Good luck,

Ben -

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Graham W · Accepted Answer

Horizontal width, vertical height or both?

-- Graham W

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Fred Abse · Answer

If the horizontal and vertical sizes vary but stay in step, it could  mostlikely be a final anode (HV, EHT) voltage variation problem, or a PSUvoltage variation problem.-- "Electricity is of two kinds, positive and negative. The differenceis, I presume, that one comes a little more expensive, but is moredurable; the other is a cheaper thing, but the moths get into it."                                             (Stephen Leacock)

Re: Size of CRT screen keeps changing - loose connection?

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