Re: Major Havoc Screen problems

This could be blooming caused by low high voltage. What kind of monitor are you using? If its a WG6100, you should be able to check for 180vdc on pin 5 of the HV cage. If you are using an Amplifone, you should be able to check one of the secondary windings on the HV transformer (it isn't red, is it?). Btw, if anyone cares, you can also set the HV on a G05 by either using the 90V (B+? - I don't have my schems on me) and the 400V (focus).

This could also be a problem with the HV diode. This is a very common problem with G05's.

Jon

At 09:44 AM 9/5/2000 -0400, you 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)

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Received on Tue Sep 5 10:12:35 2000