Re: battlezone half screen problem

Lucky I still had my Omega Race as I am moving all
games to storage and making sure each works before
taking them..
The OR monitor worked so I narrowed it to the monitor.

Took out deflection and looked around the pots. I
noticed a cap had a broken trace on the back..very
hard to see but if I pushed down slightly on the cap I
could see it move.. soldered that back and it works
fine.. was cap c502.

--- COLIN DAVIES <colin.w.davies@btopenworld.com>
wrote:

> XY Scope the signal on the Game PCB Test points
> first of all, to make sure your barking up the right
> tree (or try another monitor).
> Might just be a coincidence that you were twiddling
> the pots as BZ pcb's play up at the best of times
> I lost the bottom half of the screen a few months
> ago, but when I turned it on recently, it was
> working again !! The fire button decided to get
> stuck on though shortly after but thats a different
> matter !!..
> Cheers, Colin
>
>
> ----- Original Message ----
> From: Pinx <pinx.32@tesco.net>
> To: vectorlist@vectorlist.org
> Sent: Tuesday, 27 May, 2008 10:01:09 PM
> Subject: Re: VECTOR: battlezone half screen problem
>
> I would see if any of the pots have dry joints
> first, then i would meter
> them out of circuit to see if they have a clean
> sweep and if they give the
> correct reading for their value...
>
>
> Pinx
>
> p.s. i would still meter the transistors too, just
> in case....

      
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Received on Wed May 28 15:45:16 2008