Re: WG19V2000 repair question

Ooh, I'm glad Drew asked. I've been wondering about this also.

One of my deflection boards actually burst into flames right at R100, but that was
when a couple chassis transistors had shorted. One or two of the boards I have
don't even have a resistor at R100-101, just a piece of wire. What's the deal
there?

Thanks all!
-Eric
--------------------------------------------

Andrew and Michelle Wilson wrote:

> When I got back from vacation last week, the first thing I did was turn on my
> arcade games. Of course, I found that the monitor on my Asteroids Deluxe no
> longer worked - repeat after me, everyone: "Plays Blind, Spot Killer Is On".
>
> After a bit of cursing, I started poking around inside and I found that R100 had
> fallen off. It's one of the big 15W wire-wrapped resistors that I believe
> are part
> of the low voltage power supply. From the looks of it, it had been replaced
> before,
> and the replacement had been soldered onto the two metal standoffs. Secure
> in the
> knowledge that I don't know what the hell I'm doing, I just soldered the
> resistor
> back in place, and voila, I have a picture again.
>
> So, a couple of questions:
>
> 1) Those two resistors (R100 and R101) are HOT to the touch. I mean HOT. Are
> they
> supposed to be that way, or is something else wrong on the board?
>
> 2) I imagine that eventually that heat softened the solder enough that it
> weakened,
> and if it happened once, it'll probably happen again. Is there a better
> way to
> reconnect that resistor?
>
> 3) When I run the board in test mode (with the crosshatch) I notice that the
> lines
> are all pulsating very slightly (in and out), but the lines themselves
> are pretty
> straight (not rippling). How much pulsation is normal? Should I expect to
> be able
> to get a rock-steady display?
>
> Thanks,
>
> Drew
>
> P.S. I also want to thank whoever put the *excellent* HTML version of the
> 19V2000 manual
> online at http://www.geocities.com/SiliconValley/Lakes/9862/ - someone
> spent a good
> deal of time on it, and it's really well done. In fact, I hope someone
> is mirroring
> it, because I'd hate to see the only copy go offline.
Received on Mon Jul 19 09:37:56 1999