RE: Asteroids horizontal collapse after 20 mins or so

Most likely cold solder joint as mentioned. While you are in there you
might want to re-cap the monitor to prevent future failure from bad caps.
That way you'll only have to pull the monitor once.
On Oct 28, 2013 2:13 PM, "Kevin Reynolds" <tpresence@hotmail.com> wrote:

> Thanks John. I saw a design of the poor man's discharging tool with the
> 1Mohm resistor...now I know why.
>
> Kevin
>
> > Date: Mon, 28 Oct 2013 10:09:51 -0700
> > From: pinball@telus.net
> > To: vectorlist@vectorlist.org
> > Subject: Re: VECTOR: Asteroids horizontal collapse after 20 mins or so
> >
> > Please read the following link BEFORE attempting to discharge an older
> > B&W XY picture tube! Otherwise there is a strong likelihood that you
> > will damage your HV diode...
> >
> > http://www.flippers.com/vid-tips.html#discharge
> >
> > John :-#)#
> >
> > On 10/27/2013 10:40 AM, Kevin Reynolds wrote:
> > > I am an engneer, although in networks and security, not electronics.
> > > I can and have soldered together circuit boards with components from
> wire wrap, through-hole, and SMD. I do shake a bit, so its not easy, but I
> have done it many times, even recently. I have o-scopes, meters, and
> otherwise. I haven't used an o-scope in decades, but I don't think it would
> be too tough to renew any simple knowledge I might have once had. I can
> read a schematic, but I'm not a designer or even a technician, just a
> hobbyist.
> > > I haven't tested components since my digital class in the late 80s,
> but I'm not afraid to.
> > > I can discharge the tube if I need to (its not fun, but I don't think
> anyone thinks it is) with rubber gloves, a lamp cord and a screwdriver. I
> don't have a tube discharge device.
> > > I do have the original manual, and I believe the schematics as well,
> but I think they are downloadable on the net.
> > > Does this help?
> > > Kevin
> > > ________________________________
> > >> Date: Sun, 27 Oct 2013 12:30:49 -0500
> > >> From: js@cimmeri.com
> > >> To: vectorlist@vectorlist.org
> > >> Subject: Re: VECTOR: Asteroids horizontal collapse after 20 mins or so
> > >>
> > >>
> > >> What kind of response are you hoping for? What is your level of
> > >> electronics expertise?
> > >>
> > >> - JS
> > >>
> > >> Kevin Reynolds wrote:
> > >>
> > >> Greetings all,
> > >> I decided to just take a chance and power up the asteroids cabinet,
> and it worked perfectly for about 20 minutes. After warming up, the video
> signal collapses horizontally (A vertical line in the center of the screen
> with different levels of brightness (guess the signal is stacking where
> ships, asteroids, and other video output is displayed). If I shut the
> system off and let it sit for a bit, it works perfectly again. Before the
> video collapses, I can see some very slight wavering of the screen at the
> edges, but its nearly inperceptible.
> > >> Any cues on what I should look at? Other than this problem, it seems
> like everything is working. Audio is working (although the speaker might
> need tightened, its a bit raspy), the buttons work. I have it on free play,
> so I don't know if the coin mech is working. This coin mech is the original
> circular model. In fact, I'm pretty sure this game is the original version,
> without the copyright date on the display.
> > >> Thanks all,Kevin
> > >>
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> > >>
> > >>
> > >>
> > >
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> > >
> >
> >
> > --
> > John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> > Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
> > www.flippers.com
> > "Old pinballers never die, they just flip out"
> >
> >
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>

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Received on Tue Oct 29 09:21:33 2013