Repair log: K6100 with the "jiggles"

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Archived from groups: rec.games.video.arcade.collecting (More info?)

Hey all. I thought I'd pass this on.

I had this K6100 in a Star Wars that had the case of the jiggles something
fierce! It almost looked like an AC hum bar going through the monitor but
that was tossed out when I checked the power supply voltages with a scope.
Then I measured the +/- 26 volts on the monitor chassis and the -26 was all
over the place. -25 then -30 then back to -27...

On a whim I replaced the chassis mounted transistors and wouldn't ya know
it, the jiggles were gone. Rock solid voltage with a rock solid picture. My
only problem now was the convergence was whacked big time. I don't get how
changing 6 transistors could do that but it did. All I had to do was push
the convergence rings a little closer to the yoke and it was back to the way
it was.

--
Matt

M and M Electronics
6661 Stanford Ranch Road
Suite F PMB 105
Rocklin, Ca 95677
916-275-5871
 
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Archived from groups: rec.games.video.arcade.collecting (More info?)

great news.....good post!


"Matt Mac Donagh" <gamefixer@gmail.com> wrote in message
news:esudnfEHppM5TvDfRVn-qw@starstream.net...
> Hey all. I thought I'd pass this on.
>
> I had this K6100 in a Star Wars that had the case of the jiggles something
> fierce! It almost looked like an AC hum bar going through the monitor but
> that was tossed out when I checked the power supply voltages with a scope.
> Then I measured the +/- 26 volts on the monitor chassis and the -26 was
> all over the place. -25 then -30 then back to -27...
>
> On a whim I replaced the chassis mounted transistors and wouldn't ya know
> it, the jiggles were gone. Rock solid voltage with a rock solid picture.
> My only problem now was the convergence was whacked big time. I don't get
> how changing 6 transistors could do that but it did. All I had to do was
> push the convergence rings a little closer to the yoke and it was back to
> the way it was.
>
> --
> Matt
>
> M and M Electronics
> 6661 Stanford Ranch Road
> Suite F PMB 105
> Rocklin, Ca 95677
> 916-275-5871
>