Re: Major Havoc Screen problems

Looking at the schematics I have this suggestion:

Run selftest and see if the "shrinking box" still works. If
it doesn't, Q7 might be stuck on or shorted (or Q6 turning
Q7 on). This would take sizing to maximum and totally kill
the analog sizing functions.

"Evrovski, Andrew" wrote:

>
>
> Hello Folks,
>
> I was going through the test modes adjusting MH
> pots to the screen patterns as outline in the MH docs.
> There were screens with colour patterns and cross-hatches
> etc and I followed the instructions for making
> adjustments.
>
> At one point there is a screen with a red box
> around the screen and then a white box just within and
> then another box (looked green although manual said it
> should be white) that starts outside and shrinks smoothly
> in the middle, till it disappears and then starts again.
> Anyhow I saw all that, made adjustments and started to
> play the game. While I was playing (about 15mins), all of
> a sudden the picture expanded on the screen such that
> objects were way off the screen that I would normally see
> (almost like I zoomed in on a part of the game - or as if
> I had adjusted the x & y size pots. Anyhow, it was like
> this and I rebooted back to test mode to re-adjust and
> could not shrink the screen back to the correct size (it
> was still way to stretched). I also lost the red border
> around the tests screens as well and the nice smooth
> shrinking box no longer is smooth.. it skips sizes and
> just disappears and appears as a smaller box like it is in
> jerky movement mode.
>
> Anyhow, I am assuming that my pot(s) blew or
> something is fishy with them. These are the ones I was
> adjusting:
>
> XBIP: R80 Pot - 200?
> YBIP: R81 Pot - 200?
>
> XSIZE: R34 Pot - 10K
> YSIZE: R48 Pot - 10K
>
> XCENT: R39 Pot - 10K
> YCENT: R55 Pot - 10K
>
> XLIN: R38 Pot - 2K
> YLIN: R50 Pot - 2K
>
> Anyway, can anyone confirm that I need new pots
> (perhaps the x-size/y-size ones) or does anyone know if it
> could be something else. Any help is appreciated.
>
> Thanks
> /\A\n\d\y/
>
> Andrew Evrovski
> Development Director
> Cyberplex Atlantic, Halifax, NS
> (TSE:CX)

--
Windows:
32 bit graphical interface for a
16 bit patch for an
8 bit operating system written for a
4 bit processor by a
2 bit company that can't stand
1 bit of competition.
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