Main > Main Forum
Karate Champ sound issues
matsadona:
Hi all
I have a strange problem with my Karate Champ (vs.) PCB.
Please refer to this video for mor information. Any help would be appreciated.
I need help to understand what might be wrong with my recently bought Karate Champ (vs) PCB.
As you can see the sound is messed up. Seems to me that it tries to play the melody, but holds the first note...
Also the samples can't play and it all goes "metronome" style...
I have lifted out both Yamaha and the Z80 chips, to see if that help (eroded pins). Also did the same with the 16, 17, 18 ROM's, since I believe they are the sound chips.
matsadona:
30 views and not a single suggestion or comment? ??? Anyone?
matsadona:
Seems that I will have to buy a second PCB since I'm pretty stuck here. And I will need a new setup of ROM and CPU circuits to replace with to narrow it down.
But still, any suggestions (based on similar problems) is for sure appreciated.
Lilwolf:
Wrong forum to get board level repairs.
did you try klov's forums? I'm not sure where else to ask. I used to work with an electrical engineer, and he could eyeball a schematic and a board and figure out in 2 minutes any problem I had. I wish he was still around.
matsadona:
Yeah, you are probably right. I'll register at KLOV and see what that gives.
Could be useful to lurk over there too by other reasons as well :)
Navigation
[0] Message Index
[#] Next page
Go to full version