TECH: Multi-Pac corrupt graphics

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

I have a Multi-Pac v1.5 that I installed on my Ms. Pac-Man board quite
awhile ago. It's worked great up until a couple of weeks ago. The
game comes up but all the graphics are corrupt, even at the Multi-Pac
game select screen. You can play the games but the mazes are all
messed up. Here is a 34 second (2MB) video I took of the game:

http://www.debaser.net/pacman_corrupt.wmv

I have cleaned/reseated all the socketed chips, replaced the Z80 and
checked the voltages. At this point I'm not sure if it's the
Multi-Pac kit or the Pac-Man board. I would try reinstalling my Ms.
Pac-Man chips and aux board but a bunch of the legs on the proms broke
when I removed them (they were rotted bad).

Anyone have ideas what might be going on? Does anybody have the 2 rom
files for the Multi-Pac v1.5 so that I can compare them against the
ones I dumped from the roms? Any help would be appreciated. Thanks.

Rodney

 

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

That could be a lot of things but I dont think its the Multi-Pac kit. Even
though its been fine I'd still inspect the board for bent pins and shorted
traces on the backside. Also, the broken pins from the original ROMs may
have moved and are now shorting things out on the board.

It could also very well be component failure which means you would have to
send the board in to one of many qualified people or work on it yourself.

Matt

"Rodney M" <debaser@debaser.net> wrote in message
news:l554c11c6jntstpmo015iv361e0qpro9hi@4ax.com...
>
> I have a Multi-Pac v1.5 that I installed on my Ms. Pac-Man board quite
> awhile ago. It's worked great up until a couple of weeks ago. The
> game comes up but all the graphics are corrupt, even at the Multi-Pac
> game select screen. You can play the games but the mazes are all
> messed up. Here is a 34 second (2MB) video I took of the game:
>
> http://www.debaser.net/pacman_corrupt.wmv
>
> I have cleaned/reseated all the socketed chips, replaced the Z80 and
> checked the voltages. At this point I'm not sure if it's the
> Multi-Pac kit or the Pac-Man board. I would try reinstalling my Ms.
> Pac-Man chips and aux board but a bunch of the legs on the proms broke
> when I removed them (they were rotted bad).
>
> Anyone have ideas what might be going on? Does anybody have the 2 rom
> files for the Multi-Pac v1.5 so that I can compare them against the
> ones I dumped from the roms? Any help would be appreciated. Thanks.
>
> Rodney

 

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

Matt Mac Donagh <gamefixer@gmail.com> wrote:
: That could be a lot of things but I dont think its the Multi-Pac kit. Even
: though its been fine I'd still inspect the board for bent pins and shorted
: traces on the backside. Also, the broken pins from the original ROMs may
: have moved and are now shorting things out on the board.
:
: It could also very well be component failure which means you would have to
: send the board in to one of many qualified people or work on it yourself.

Could be the rom select lines are blown and it's picking the wrong
graphics romset... I've got a kit with that problem. (it doesn't change
colors either).

--
Mark Spaeth mspaeth@mtl.mit.edu
50 Vassar St., #38.265 mspaeth@mit.edu
Cambridge, MA 02139
(617) 452-2354 http://rgvac.978.org/~mspaeth

 

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

Looks like a bad 284 socket or pin to me.

- Mike -

On Tue, 28 Jun 2005 23:33:46 -0400, Rodney M <debaser@debaser.net>
wrote:

>
>I have a Multi-Pac v1.5 that I installed on my Ms. Pac-Man board quite
>awhile ago...
>http://www.debaser.net/pacman_corrupt.wmv
>
>Anyone have ideas what might be going on? Does anybody have the 2 rom
>files for the Multi-Pac v1.5 so that I can compare them against the
>ones I dumped from the roms? Any help would be appreciated. Thanks.
>
>Rodney

 

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

I was able to fix the problem. It ended up being a bad 2114 RAM at 4N.


Rodney

Mike Haaland wrote:
> Looks like a bad 284 socket or pin to me.
>
> - Mike -
>
> On Tue, 28 Jun 2005 23:33:46 -0400, Rodney M <debaser@debaser.net>
> wrote:
>
> >
> >I have a Multi-Pac v1.5 that I installed on my Ms. Pac-Man board quite
> >awhile ago...
> >http://www.debaser.net/pacman_corrupt.wmv
> >
> >Anyone have ideas what might be going on? Does anybody have the 2 rom
> >files for the Multi-Pac v1.5 so that I can compare them against the
> >ones I dumped from the roms? Any help would be appreciated. Thanks.
> >
> >Rodney