VECTORLIST - The Mailing List For The Technical Discussion of Vector-Based Arcade Games

February_2001
Re: VECTOR: G08 deflection problem


From: David Fish ( )
Date: Fri Feb 23 2001 - 15:23:28 CST


My first choice would be U600, the 18 pin X/Y correction custom
chip (14-2156-01). Sometimes these are socketed, sometimes not.
If it is, a simple swap for a known good device will answer the question.
By the schematics it looks like the likely suspect.

Dave

----- Original Message -----
From: Jenison Mark-QA3578 < >
To: < >
Sent: Friday, February 23, 2001 11:57 AM
Subject: RE: VECTOR: G08 deflection problem

> >
> > Thanks Dave. The Horiz Width, etc all work fine. You are
> > the third person to suggest to me that it looks like a power
> > supply issue. I need to check the +63/-63V on the board. I
> > will check that later this week. I was able to get another
> > deflection board working in the mean time.
>
> Ok, I checked the +63/-63V on the board at pins 1 and 7 of both the
> connectors to the deflection transistors, and they both read ok. The
> size/centering adjustments do not appear to move the lines where the
> vertical and horizontal deflection fails. So I don't have full +Y and -X
> deflection. Any ideas? What's next to try?
>
> --
> Mark Jenison
> --------------------------------------------------------------------------
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