Karate Champ PCB Issues

mk3u2012

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i have several player vs player pcbs (one bootleg) that are not working fully. i will list the issues per board, some have perfect video and only have audio problems and some boot right to garbage. open to any recommendations and insight. thanks in advance.
blake

pcb #1- original board. video looks to be perfect. sound has issues. i will try to upload a sound file. seems to have all game sounds both characters and music. beeping noise comes in and out sometimes cutting off all other sound. a ringing sound happens during attract mode which lasts for 10-15 seconds then goes back to normal. this also cuts out all audio.

pcb#2-original pcb. boots to all garbage. no sound pic will be uploaded.

pcb#3-original pcb. sound is perfect. video has three rectangles that appear over fighters if they move. everything else seems fine. rectangle blocks go away as soon as fighter is not engaging. pics will be uploaded.

pcb#4- only bootleg pcb. boots to garbage. pic will be uploaded. no sound
 
having trouble loading sound clip for pcb 1. keeps saying invalid. im pulling from samsung voice recorder. direct from app. cant find a specific file for it. any ideas?
thanks
blake
 
Karate CHamp

I have 2 boards one is a bootleg that is totally dead and a real deal board that is booting up to garage also. I haven't had a change to look at them, but please keep us posted on any fixes for these boards. I have checked the Roms on my real deal board and they are fine, that is all the time I had to send on this board so far.
 
I have 2 boards one is a bootleg that is totally dead and a real deal board that is booting up to garage also. I haven't had a change to look at them, but please keep us posted on any fixes for these boards. I have checked the Roms on my real deal board and they are fine, that is all the time I had to send on this board so far.

by checking the roms do you mean dumping them and looking through the data?
thanks
blake
 
Karate Champ PCB

Read them with my eprom reader and compare them against Mame romset.
 
No not too bad. You have too remove the Rom chip place it in the reader and then with the software load the mame Rom for that Rom. Then tell the software what kind of eprom it is, then click on verify for my reader/writer. It will tell you if it is the same code or not.
 
No not too bad. You have too remove the Rom chip place it in the reader and then with the software load the mame Rom for that Rom. Then tell the software what kind of eprom it is, then click on verify for my reader/writer. It will tell you if it is the same code or not.

very cool. i have not done any work with rom burning or reading. will have to look into that.
thanks
blake
 
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