
Hello people,
I'm a member on arcade otaku, and on jamma+, have just not posted on here.
Please can anyone help with this...
Just got another MK2 sound card from the states hoping it would cure my slight fault and it's exactly the same, so now maybe my main board has a fault or it's the wiring??
Any ideas?
The fault is very slight but I know it's there compared to mame.
The overall sound is slightly distant and quiet, almost with a slight buzz/humming in the background.
When you put a coin in it should say "excellent"
It doesn't!
But sometimes it does but very very quiet, all other sounds seem to be there and correct but I can tell it isn't right.
If you go into the test menu you can test the sound board, it comes up ok for it being present, but all roms say 'bad checksum U2 etc..' which is why I got another one to check, but it is the same.
Maybe they are both faultly but my gut says it's something else.
This is the dcs sound system, not the yamaha one on the first mk game.
Could be my ribbon cable?? the replacement one I got was a board only no cables so all cables I used are the same.
Any ideas would be very kind, anyone got a ribbon cable I could borrow/try, I will pay you, and the postage.
Or would burning a new set of roms be an option? I can send you one of the sets?? Can these roms be burnt, "noooob question alert"
The psu said 5.1v, got that back to 5.0v
The sound board was 12.21v
Like I said it sounds ok, but should be clearer and louder (although it does go quite loud)
It says in the sound board test menu:-
GENERAL TEST
REVISION 3.1
LISTEN FOR TONES:
0 TONES - CHECK HARDWARE
1 TONE - SOUND BOARD OK
2 TONES - BAD U2 CHECKSUM
3 TONES - BAD U3 CHECKSUM
4 TONES - BAD U4 CHECKSUM
5 TONES - BAD U5 CHECKSUM
6 TONES - BAD U6 CHECKSUM
SOUND IRQ DETECT FUNCTIONAL
ANY BUTTON TO CONTINUE
Thanks Paul.
EDIT:- Both the sound cards I have do exactly this
Also just pulled my cmos battery out of my mk1 board (same battery BR2325) and the battery works and saves all the settings as it should now, but still all the same faults as above.