If the upper address lines to the SRAM are not all connected,
some of the patches would be repeated. I don't think the code
that reads patches from cassette and writes them into RAM does
any kind of check.
The RAM is right near the part of the board where the battery
damage occurs.
Bob
Thanks Bob, I checked all the lines… They seem to be tightly fit. Nothing loose. Also I just did the tuning procedure and I can get all 6 voices tuned to the same note but then the octaves are off. I then learned that this should be in test mode but then when I restart I get this really distorted sound and two of the program lights are on and can't get a clean sound to tune. So I have to take it out of test mode.
Jack