Re: Asteroids horizontal collapse after 20 mins or so

You may also want to check the bottle cap transistors on the frame. One
could be getting hot or one of the lugs may have a cracked joint on the
bottom of the transistor socket. You could have one bottle cap transistor
that is getting too hot and then it starts getting wonky. Might not be a
bad idea to replace them and or at least replace the grease and the mica
insulators. But like the others have said most of the time I find problems
with the pins on the deflection board or the connectors that hook the
transistors on the frame to the deflection board. I have had similar
problems with asteroids deluxe machines and I have to use a pin or
something small to push the pin connector out a little more inside those
molex connectors. You can check the temps on the bottle cap transistors
using an infrared thermometer.

Good luck,
Ed

On Sun, Oct 27, 2013 at 2:31 PM, Kevin Reynolds <tpresence@hotmail.com>wrote:

> Thank you for your response, Max.
> I will take a look at the deflection pcb board. I believe this is the
> board installed on the right side of the cabinet from the rear. I believe
> the regulator PCB is below the monitor and has the two large blue
> capacitors sticking up...
> Kevin
>
>
> ----------------------------------------
> > Subject: Re: VECTOR: Asteroids horizontal collapse after 20 mins or so
> > From: maxstang@sbcglobal.net
> > Date: Sun, 27 Oct 2013 14:09:07 -0400
> > To: vectorlist@vectorlist.org
> >
> > Cold solder joints on the deflection (main) pcb on the monitor. Pull the
> board and reflow all the resistors, and headers and look carefully at the
> transistor joints.
> > On Oct 27, 2013, at 1:40 PM, Kevin Reynolds <tpresence@hotmail.com>
> 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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> >
> >
> >
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Received on Sun Oct 27 15:04:07 2013