X-men crapped out today

AlkalineJay

Active member

Donor 2013
Joined
Oct 25, 2009
Messages
1,979
Reaction score
15
Location
Oak Ridge, Tennessee
It has ran great since I got it with not one problem, now, it wont boot up, it gives me four ram errors. I pulled and reseated roms, to no avail. Is there any hope for these boards, or are they garbage once they go bad?


IMAG0547.jpg
 
I have a 4P X-board with bad sound. I think the KONAMI Custom Sound chip is bad on my board; however, not quite sure yet.

-----------------------------

So, the sound worked great before the board crapped out; hmmm, let's see...

Looks like the chips at locations 2D, 6F, and 7C can be replaced if you can find replacements parts.

BUT, it's the Customer KONAMI IC at 4E that's got me worried.

Best to PM CM about this repair.

PM sent to CM. ;)

:D

-----------------------------

1. 2D: HM62256ALSP-8 chip
2. 4E: 054539 KONAMI Custom Chip
3. 6F: 068 A01 KONAMI OTP Rom
4. 7C: LH168D-80L chip.
 
Last edited:
2D = 32k x 8 (.300) SRAM IC (62256 or equivalent)
4E = Konami Custom IC 054539
6F = Sound Program ROM...
7C = 8k x 8 (.300) SRAM IC (6264 or equivalent)

I think you'll find all of these are sound components... and I've noticed before that some of the control lines for the CPU to communicate to them go through that hybrid module... Probably where your source of problems are...
 
I have a 4P X-board with bad sound. I think the KONAMI Custom Sound chip is bad on my board; however, not quite sure yet.

Everyone is capping their Xmen HSC... why haven't you?
You know better than to sit on it... regardless if you think it's the source of the problems.
 
Everyone is capping their Xmen HSC... why haven't you?
You know better than to sit on it... regardless if you think it's the source of the problems.

Yeah, my board was recapped--twice--and the sound problem still persists. At present the only indication of a sound problem--or any problem for that matter--is the persistant popping and scratch audio sounds. Aside from that the board looks good and works great. So, I need to look else where for sound issues before I decide to scrap my board. Been thinking about messing around with a donor board. But not sure yet. I.D.K.--it all depends.
 
From what I've read, the sound problem doesnt generally cause the game to get hung up in rom check, is that right? Until I get the board repaired, I am going to throw TMNT in, only thing is, xmen has the separate connector for audio to the speakers, whereas the tmnt board does not. Is there any temporary solution to this without cutting wires in my xmen cab? Thanks for all of your input so far guys!
 
I had a Konami board with a hybrid module that was cracked through the middle... it would do the ROM tests at the beginning of boot then reboot and keep doing that in a repeating cycle.

This is why I believe that if you have a failing module it can cause it to do that.

When those caps leak they can cause connectivity issues between the legs and the traces on the ceramic substrate if the leak gets sooo bad that it reaches the edge of the module.
 
On my board, all the ROMs on the ROM TEST menu are OK. But, the game sound is messed up. And all the traces on the top of the sound chip have good continuity and resistance to the edge of the chip. Yet, the sound is still messed up. And, all the caps have been replaced--twice--and game is still messed up. When I first got my board it was working 100%. so I put it on the shelf. Next month, I took it of for a play. The board looked good, played great; however, the sound was bad!!?? Now it's back on the shelf for another day.
 
Did the leaking electrolyte reach the edge of the hybrid? If so, then you may have a poor connection between the top and bottom sides of the hybrid. There are IC chips and more parts (no electrolytics) on the bottom side of that module.

Did you check for bad traces on the top of the hybrid? You may have to jumper some of those deposited traces that are on the ceramic substrate.
 
Odd thing about my board is that it did not have leaky caps on the chip and it did not have any wetness around the base of the caps on the sound chip. When I removed the caps from the sound chip, the original black pain still looked shiny, smooth black and new and all the caps and the chip looked dry--no paint wrinkles from moisture or corrosion. I used rubbing alcohol and cotton swabs to remove the black paint. Then re-capped the chip. I put the old dry caps in a little plastic baggy and kept the old caps for examination. The old caps are still dry, today, in their little plastic baggy. So that's why I'm thinking my sound problem is either the Hybrid IC or the sound chips around the HIC.

In any event, I don't trust the ROM check screens. Seen too may ROM OK screens on CAPCOM boards with a bad ROM to trust that ROM check screen. :D
 
Back
Top Bottom