Donkey Kong Weird Sound Problem(s)

Madaracs

Well-known member
Joined
May 25, 2005
Messages
2,351
Reaction score
41
Location
Golden Valley, Minnesota
First, I checked the amp board on the Sanyo. It was recently recapped. Also, I've been reading Mike's Arcade repair logs and I _thought_ I might know what the issue is but now I'm not so sure.

Here are the symptoms:

  • When you coin up sound works.
  • Music plays. Stomping sound works.
  • Grin noise is absent however it "clicks" three times--as if it were a corrupt sample.
  • When you die, there is no noise. On first two levels.
  • Falling noise works on first two levels.
  • However, (and this is the weird part.) When you're on the spring and elevator level, the death noise randomly plays (as far as I can tell this is only if you've died in previous levels) AND there is no falling noise if you fall. If you die the dying noise still doesn't happen. But I thought it was weird it was playing randomly on that level.

I thought it might be a bad EPROM (I've got EPROMs on the way) but now I'm wondering if there is a deeper issue with the sound board?

Any suggestions or experience with this particular issue are of course welcome.

4 Board Set. (Nintendo of America)

I should also add that all of the sounds that are present sound clear, crisp and loud!
 
Last edited:
You also might want to replace the caps in that area if you have any extra caps around. I think the board has seperate little circuits for each sound, each circuit has a cap or two in it and a transistor or two. If you've got extra caps or transistors those are easy to swap out.
 
Turned out it -was- the board. Ballytablewiz sold me a spare board and 8035 he had laying around. Worked out very well.

And now I have a spare 8035 to boot. (no pun intended.)

Now I'll have to get this other board running just to have a spare or pass on the love to someone else someday.

w0rd. Thanks to you guys for your help! I'm so excited to have a working DK.

Now all I have to do is get that coin door on and figure out how to modify the rolling coin mech to take tokens.
 
Back
Top Bottom