TKG3-06 Donkey Kong Sound board missing half of the sounds

smalltownguy2

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TKG3-06 Donkey Kong Sound board missing half of the sounds

Hey folks,

I've got a sound board from a TKG3 4 board Donkey Kong that's missing half of the sounds. These are the sounds I know I have:

  • Girder smashing
  • walking
  • jumping

I'm missing just about everything else: music, dying sound, points scoring, coinup, grin sound, etc.

I've check the caps on the sound board, and I replaced a few that had high ESR ratings, but that didn't take care of the issue. I was going to start looking at the transistors next, but I thought I would ask here first before going any further.

Thoughts?
 
Hey folks,

I've got a sound board from a TKG3 4 board Donkey Kong that's missing half of the sounds. These are the sounds I know I have:

  • Girder smashing
  • walking
  • jumping
I'm missing just about everything else: music, dying sound, points scoring, coinup, grin sound, etc.

I've check the caps on the sound board, and I replaced a few that had high ESR ratings, but that didn't take care of the issue. I was going to start looking at the transistors next, but I thought I would ask here first before going any further.

Thoughts?

I'd start at the 40-pin 8035 MPU. Most of the time they're socketed....reseat the chip or replace the socket if it looks like crap. Once in awhile I actually find the 8035 bad.

Edward
 
Thanks, Ed, I pulled another 8035 from a working -07 board, and swapped the 2 eproms too.

Board fired up just fine. I'm burn testing it now, but it should be OK - all sounds have returned and the board is happy again :)

The chip legs on the old 8035 were pretty black, so I'll clean them up and see if that's all it needed, or see if the chip is truly bad.

Later, I'll put the eproms and 8035 into the known working -07 board to test.

If the processor is truly bad, where's my best bet on a replacement?

Thanks for the help!
 
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