AES sound issue

Hi,
i´ve grabbed an unchecked AES for cheap. It runs but has no sound.
I didn´t found a bad trace or something. I´ve tried to via headphones and over standard av plug but nothing. So it must be a bad part on the board.
Revision is 3-6.

I have another bad board for changing parts.

Are there typical errors or often breaking parts in this case?

Any idea what to do?

I´ve changed the CPU and the sound chip. Same problem.

Any idea?

Im sure you did but...clean the cart? On more than one occasion I have had ZERO sound just cause the cart needed a thorough cleaning

Try the steps here:

http://www.neo-geo.com/forums/showthread.php?t=194525

awbacon said:

Im sure you did but...clean the cart? On more than one occasion I have had ZERO sound just cause the cart needed a thorough cleaning

Click to expand...

On my other system the Rom´s running well.


Another error is shown. If i put a memory card in the system tops booting and shows mem card error.