Mario Bros. sound problem need help plz!!

wickedbass

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Hey i had a thread on this an cant find it so sorry...

So my mario bros is having a sound problem. i can hear him walk but no other sounds. i was told i was having problems with my digital sound and all i was hearing is analog...
Today i replaced the sound MPU/8039. This has not made any difference.

Any help as to where to start next would be great.
 
IIRC, Replacing the '8039' will do more harm than good, since the version used on Mario has an internal ROM that the replacement won't.
 
is there a sound pot on the pcb that im missing? (wishfully thinking that im just an idiot)

Any suggestions?

-Thanks
 
IIRC, Replacing the '8039' will do more harm than good, since the version used on Mario has an internal ROM that the replacement won't.

An 8039 has no internal ROM, the 8049 does.

There's a 6116 for external SRAM and a 2732 EPROM attached to that 8039. Check those and the socket on the 2732.
 
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