Please advise Ms Pacman Problem

[vader]

I'm assuming this is definitely a rom problem and sound is wierd also ( really wierd ) what steps are advised beside taking board out and cleaning the contacts and reflowing soldier


Thanks Tim

[CheffoJeffo]

Are you asking because you have done those and they haven't worked or are looking for something else to try first ?

In the meantime, try:

http://www.mikesarcade.com/arcade/repairs/mspacman.html

Cheers.

[Jabba]

Could it be a problem with the Power supply? I've heard a bad power supply can cause weird problems...

[vader]

ok...I posted in the wrong forum and sinced moved to main, but no I've never done those things before, just some things I've read, i'm gonna read that link though

Tim

[Ken Layton]

Mowerman has an excellent Pac-MsPac troubleshooting guide with pictures.

Try reseating any socketed chips on the gameboard.

[Thenasty]

just in case you missed this on the Main.

http://www.mikesarcade.com/arcade/pacfix.html

[fredster]

there is also one on www.ionpool.net

It's more advanced than the one on Mike's arcade.

[vader]

Thanks Fredster,

I was at one site last nite that had good info, but nothing related to my problem.  I need a dumb down version since this is the first time I working on a PCB.  I emailed Two Bits to get a quote since there are tags where they have worked on this board before.  I will probably convert back to PacMan anyway.

Thanks

Tim

[fredster]

You can try looking up a Logic probe. (They are like what, $15?)

I fixed a PCB the first time I ever used one. You keep probing the chips until you find one with dead legs.

Randy Fromm has some stuff on his site on how to fix PCBs.  randyfromm.com.  He's buried the tech section somewhere.  Anybody know where it's at?

Give it a shot.  It can't hurt.  Tool around with it until you find it.