Re: 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....

----- Original Message -----
From: "andre" <livnfree_can@yahoo.com>
To: <vectorlist@vectorlist.org>
Sent: Tuesday, May 27, 2008 8:24 PM
Subject: VECTOR: battlezone half screen problem

>I have a BZ that was working great.. I replaced the
> tube in the monitor today and it was looking great. As
> I was adjusting the pots, the led on deflection
> started to flicker.. it is not on completely, but very
> dim and flickers slightly.. but on the screen, I had
> lost the right half of the image. Its not a transistor
> issue (i think) as it is not a defined bright white
> vertical line..
> When it is in attract on the score screen it is pretty
> well the center that is the dividing line with the
> right half missing. Where the dividing area is, it
> fades over about a 1/4 inch. When it goes to the part
> of the attract where the battlefield is rendered, the
> side that is missing waves side to side and almost at
> times becomes completely visible.. its almost the same
> look as if you were projecting an image on a wall and
> a flag blowing in the wind was blocking half the
> screen, and revealing it as the wind blew.. hope this
> makes sense.
>
> I read a bunch of vectorlist posts and nothing seems
> to be the same..similar.. I replaced c11 like someone
> else had done and it did nothing. I also tried a
> different yoke and the same thing although opposite
> side was blank (was from a direct view game).. blank
> area rotates with the yoke if you turn it.. Its almost
> like that side of the yoke has no power although if
> that was true, the beam should collapse into a bright
> line in the center I would think.
>
> Any ideas??
>
>
>
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Received on Tue May 27 17:04:47 2008