🚀 go-pugleaf

In article <478bkm$8ud@abacus.demon.co.uk> dmb@abacus.demon.co.uk (David Byrne) writes:

>   Here's a problem...

>   I've had a Trident 8900C (1M) running a Wang 14" SVGA for a coupla years
>   without problems. Recently the screen started making a "Whissssss" noise
>   when it's powered up, so I thought the tube was heading west. Subsequently
>   the display started to flicker from bright to dim intermittently for about
>   ten minutes after powerup, and eventually lots of speckly noise would
>   appear every so often, so I gave up and ordered a new monitor which I've
>   gotta pick up this Saturday.

>   Last night I borrowed another monitor, and this one seemed fine. However,
>   after a while in Windows, the display jumped to the left of the screen,
>   and the horizontal/vertical align controls failed to have any effect. I
>   couldn't budeg the image. I powered it off overnight, and started it up
>   again this morning. Again everything seemed fine in DOS and Windows,
>   but the jump to the left happened aegin sometime this morning.

>   Could the problem be in the card, or do I have two duff monitors here ?

Two dud monitors unless you are exceeding the safe scan rates on either.

Your original problem could be a failing flyback transformer or other power
supply component - possibly just too much dust, dirt, and grime inside.
It is not the CRT.

The second monitor probably has a bad connection in the horizontal
circuitry.

--- sam

>   I'd rather not buy a new monitor and discover that the problem is still 
>   there.
>   Any advice or info would be greatly appreciated.
>   David