Hewlett Packard HP D8905 Monitor Focus Adjustment

[Brian]

Howdy

I have the above monitor and to get a decent picture I have to have nearly
100% contrast and brightness. At these settings the focus is all screwed up.

Can anyone tell me where the focus control is - if there *is* one !

Or is it (as I suspect) just a shot screen.

Thanks.
Brian

 

[Jerry G.]

If the focus moved off by itself, there are several things that are
usually common to this.

Defective high voltage multiplier.
Focus adjustment pot is drifting due to oxidation, or a defect.
The CRT is having a defect (usually will get worse over time).

There is usually a focus pot on the side of the high voltage
multiplier, which is usually located on the side of the flyback
assembly. In some monitors, the focus pot is in a separate module, or
on the CRT board.

Jerry G.
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