Glitchy Graphics on Marvel Superheroes CPS-2

Tech Talk
1

I have a Marvel Superheroes CPS-2 Board. I Don’t play it a lot, mainly for testing Jamma systems and taking it to shows with the Jamma-in-a-Box for demo.

Anyway, ever since I got it the background graphics are glitchy. Looks like tearing, or lines going through the graphics. It doesn’t happen at all on the foreground graphics (players, health, etc). I guess it could be the A board, but since I don’t have another B board to test with I can’t be sure.

Does it just need a good cleaning, or is there something else on the PCB to check or replace?

Thanks gang.

2

Sounds like it could be corrupt ROM chips on the A board itself…

3

Thanks,
Maybe I’ll pick up another A board for cheap and try it out.

4

Argh, sorry there, typo, I meant on the B board - the graphic ROMS are on the B board so it would be that at fault, not the A board.

Hard to tell without actually seeing it but that’s what it sounds like to me…

5

OK, I’ll try to take a picture and post it tomorrow.

6

this may be completely unrelated but i have the same issue with the actual game disk when i play it on the backwards compatibility for my 360. although for me it happens on the actual character sprites.

7

Dude, just don’t speak for now. Lurk some more.

8

naw. thanks for the advice though, l337 forum guy.

9

Hey guy, press the test switch and do a memory check.

10

MSH is a completely different game than whatever you’re talking about (there is no MSH for Xbox, I assume you mean MvC2), and he’s talking about actual arcade hardware problems, not emulation problems of whatever game you’re talking about on the Xbox 360 system.

Yeah that really wasn’t a great post on your part, dood. “May” be completely unrelated…:confused:

11

I’ll try that first. THanks.

12

Funny you say that, I was at this arcade a few weeks ago. Sort of a collectors arcade in the back of a used game store that only had great games.

Anyways - They had Marvel Superheroes vs Street Fighter that was doing what sounds like the exact same thing.

13

try reseating those boards as well, while the game is running press the 2 boards together with alot of force and see if the lines change, go away or even increase. If they do change in any way from pressing them together, then it is likely just a bad connection between the 2 boards which is no big deal. Try zip tying them together or just invest in some board clamps to get a better connection.

Another (longshot) possibility is if you are using this game on the same monitor/set up all the time? If so, its possible the brightness pot on your flyback transformer can be turned down a bit and that would get rid of the jailbars on the screen. Worth a try if nothing else works. Again though, thats assuming you have not noticed the problem on other monitors.

14

Thanks Tiger, I will try that. It’s always on a different TV (Using a Jrok encoder).

Here is a picture: You can see the vertical lines. I’ll try the board “mash” thing as well.

http://www.arcadeinabox.com/stuff/ms.jpg

15

I’ve had that problems many times. Basically you just need the two boards to make a good connection. CPS-2 hardware is really stingy like this. do you have the a + b boards clips? if not you should get some.

so if you’ve mashed them together making sure they are making a great connection and that doesn’t work… trying cleaning the jamma connector on the A board.

even a little amount of stuff on the connector can cause problems to happen. All you do is get any kind of electronic cleaner, spray some on a q-tip and just rub the jamma connector down. I’m pretty sure those lines will go away.

16

I agree with everybody who talked about reseating the boards. Do you have the clamps they give you to hold the boards together? Use those. If not, get some, they’re cheap.

17

I do have the clamps, and they are on. Man I hope it’s that easy, I’ll try it tomorrow :).

Thanks guys, knew I could count on the group here ;).