Main > Main Forum

Fixing UMK3 sound problem

<< < (2/2)

Psychosylph:
Alright, managed to land a (relatively) inexpensive board off of ebay and my inexperience is definitely showing.  I figured it was pretty much slip the new board in, connect the edge connector and plug in the control connector and go.  It kind of worked; I have a board that plays and has sound but the controls don't work.

There is a bit of difference between the boards although they both are UMK3 Rev. 1.2.  There are 4 connectors on the same side as the edge connector, labeled P9, P10, P11, P12 w/ 7, 10, 15 and 15 pins, respectively.  The new board has the same things plus it has CN 3/4, EXT IN, Player 4 and Player 3 silkscreened on, as well.  The real difference I notice is that the #4 pin on both the P11 and P12 blocks on the old board are missing - it is present on both blocks on the new board.  I have a single connector that I plug into the P12 block on the old board and the controls work - plug it into the new board and they don't.

I swapped the sound chips from the new board to the old board and that didn't fix the sound issue.  So I'm thinking I should go w/ the new board.  What might I need to do to get the controls fixed?   So odd that just swapping the boards might mean rewiring things.   :-[

Malenko:
pix?   the MK3 boards should be exactly the same, and they are exactly the same as WWF Wrestlemania (and I think NHL Open Ice)

Oni2382:
to go along with malenko MK3, UMK3 and wrestlemania are all the same board...I'm not trying to cause an alarm but if you say the boards are different it sounds like one may be a bootleg :-/...Hopefully I'm wrong...Also.....Check your -5 voltage (this can cause sound issues.) If all your ROMS are showing green your -5 voltage could be the culprit (and this is an easy fix.)  Please post pix however.

Navigation

[0] Message Index

[*] Previous page

Go to full version