RE: Major Havoc clicking

I recommend that one unplugs the XY monitor until you get consistent and
seemingly correct game sounds. This should avoid potential damage to either
the monitor or the screen. I've seen a few blow up or get nasty burn lines
in a very short period of time.

John :-#)#

At 01:25 AM 10/17/00, Jon Raiford wrote:
>These trace wires are definitely not causing the clicking sounds, although
>they may stop you from seeing a picture when you fix the clicking
>problem. As far as OEM wires being crap, I think you are referring to the
>zero ohm resistors (aka jumpers) that are frequently found on monitor
>boards (they look like staples).
>
>As far as the clicking, this is a sign of the game resetting
>constantly. Disable the watchdog and see if you see anything on the
>screen. This is easily caused by problems in the vector generator (ram,
>AVG, you name it). You can verify this by stopping the CPU from waiting
>on the vector generator.. This should let you play blind.
>
>If the board was shipped working, it could be a problem with RAM, bad
>sockets, or dirty legs on IC's (or practically anything else :). Try
>pulling the socketed chips and cleaning their legs. Also, make sure you
>have a clean +5 volts. The board may work but you could have a bad big blue.
>
>Jon
>
>
>
>At 10:32 AM 10/16/2000 -0400, you wrote:
>
> >Sorry, but they probably AREN'T your problem. Those jumpers just route the
> >pre-amplified X & Y signals (IIRC) to the edge connecter so the Major
> >Havoc->Tempest/Space Duel/Gravitar/etc. adapter board can un-bow (or bow?)
> >the signal to display properly on a WG vector monitor. Since I didn't have
> >the adapter board, I just removed the jumper wires and play it on my Space
> >Duel and can't say I notice any difference in the display, but I'm not a
> >purist.
> >
> >The quad Pokey was basically 4 Pokey chips in one package. They either
> >couldn't get them done in time or couldn't make enough of them so they had
> >to make the daughter board with 4 Pokeys and named it...
> >
> >You might want to try:
> >http://www.gamearchive.com/video/manufacturer/atari/vector/html/major_hav
> oc.html
> >
> >HTH
> >
> >
> >
> >
> >
>
> > "Bret
> Pehrson"
>
> > <bret@infowest.com> To:
> <vectorlist@synthcom.com>
> > Sent
> by: cc:
>
> > owner-vectorlist@sy Subject: RE: VECTOR:
> Major Havoc clicking
> > nthcom.com
>
> >
>
> >
>
> > 10/15/2000 10:32
> PM
>
> > Please respond
> to
>
> > vectorlist
>
> >
>
> >
>
> >
> >
> >
> >
> >Well, I spent a little time w/ my boards, and I think that I've found the
> >problem. There are two jumper wires on the PCB, and both are broken, I
> >guess both were shaken loose in shipping...
> >
> >Anyway, I'd just like to make sure that I resolder the wires in the correct
> >place (the ends could conceivably be interchanged). Here is what I'm
> >assuming:
> >
> >Jumper 1:
> >IC 12D pin 7 to connector pad #11 (M)
> >
> >Jumper 2:
> >IC 12 A/B pin 7 to connector pad #12 (N)
> >
> >Can anyone confirm this and/or point me to documentation regarding these
> >jumper wires. Further, if I recall correctly, OEM jumper-wire is crap and
> >should be replaced anyway???
> >
> >Also, on the PCB is a "Quad Pokey Eliminator" daughter board... Again, any
> >info/docs regarding this element?
> >
> >
> >
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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, Video Games)
  http://www.flippers.com
         "Old pinballers never die, they just flip out."

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Received on Mon Oct 16 13:11:53 2000