Re: Asteroids Deluxe with WG19V2000 problems

No, I mean to check at the output pins of the DACs...sounds like you need a
technician to look over your board if you are having this much trouble
following this. Sorry.

There are a number of folks on this list that can help, I am sure, and
perhaps live closer to you...wherever you are...

Your blooming really sounds like a problem with the HV diode.

John :-#)#

At 10:38 AM 12/14/1999 -0500, you wrote:
>Are you talking about the X-out and Y-out test points?
>
>The blooming has stopped... What I don't understand is: when it blooms,
>everything is drawn perfectly (no retrace lines and no dot) but when the
>monitor is steady, I get retrace lines and the dot.
>
>----- Original Message -----

From: John Robertson <jrr@flippers.com>
>To: <vectorlist@lists.cc.utexas.edu>
>Sent: Tuesday, December 14, 1999 2:13 AM
>Subject: 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 :-#)#
> > > >
> >
> >
> > John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> > Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
> > http://www.flippers.com
> > "Old pinballers never die, they just flip out."
> >

  John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
  Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
  http://www.flippers.com
         "Old pinballers never die, they just flip out."
Received on Tue Dec 14 10:02:27 1999