Re: Beam on side of CRT

I'll save the explanation of why it would be bad to shoot a beam off the
side for someone else - (as I don't know why) but as far as adjusting your
picture - if it's the xxV2000 WG, check on the deflection board for X and Y
pots, as well. These were bad on a friend's BZ mini, making the screen too
wide to read the score - the cardboard overlay obscured it. These did the
trick when the adjustments on the game board wouldn't bring the picture
into proper adjustment.

Richard
www.arcadeobsession.com/sog

At 12:58 AM 9/20/00 -0600, you wrote:
>I was reading some of Tim Skelly's history, and in it there was a brief
>discussion of a watchdog circuit (on a vector game) that reset the machine
>as necessary. The purpose of this was to avoid the possibility of shooting
>the electron beam into the side of the CRT in a game failure condition.
>There was no discussion of why this is bad...
>
>Anyone want to offer logical explanations or actual experiences with
>shooting the beam into the side of the CRT?
>
>Other than curiosity, I have some interest because my AD displays slightly
>wider than the screen. I'm not aware of any width adjustment on the
>deflection amp -- are the X & Y gain on the main PCB used for H/V width
>adjustment?
>
>Thanks
>
>---
>Bret Pehrson
>mailto:bret@infowest.com
>
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Received on Wed Sep 20 10:16:36 2000