Re: Asteroids Deluxe with WG19V2000 problems

Next scope the outputs of the DACs when you have the game in test mode. I
find the CMOS switches can cause weirdness, and they are my next suspects.

John :-#)#

At 12:34 AM 12/14/1999 -0500, you wrote:
>I just checked it out... I had +15.03 V on one, -14.89 Von another, and +5
>V on the other.
>
>Where would you look next?
>
>Thanks again,
> Josh
>----- Original Message -----

From: John Robertson <jrr@flippers.com>
>To: <vectorlist@lists.cc.utexas.edu>
>Sent: Monday, December 13, 1999 10:19 PM
>Subject: Re: Asteroids Deluxe with WG19V2000 problems
>
>
> > The supply I am speaking of is on the game board, there are three voltage
> > regulators for the DACs, a +5 a +15 and a -15VDC regulator. If the -15 is
> > dead, then you would only get positive deflection. Just one of many
>suspects...
> >
> > Your blooming problem is most likely the HV diode, this is in the middle
>of
> > the lead that connects to the side of the picture tube. You can find
> > replacements in older small B&W TV's, you can pick up from Salvation Army
> > etc...maybe...perhaps someone here has some experience with this line of
> > attack (on finding old HV diodes) as I still have a couple of NOS ones,
> > that are spoken for our in-shop use...
> >
> > John :-#)#
> >

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Received on Tue Dec 14 01:12:43 1999