[sdiy] OT ?: Linndrum OS

[Anders Sponton]

I´ve got a strange problem with a Linndrum. I can select different songs but not patterns.
It always start up at #11 and stays there.
I can record and play back a sequence, but not erase parts of it.
I´ve checked all the connections between relevant chips, the CPU got its power stable, clock and the rest. New NiMH batteries. I have replaced all chips around the CPU and memory select. Have also lifted off the OS chips (v 3.1) and the RAM chips and put them back again.
I should test to replace the OS chips, but I can´t find any hex or obj files anywhere. 
Are they out there somewhere?


Anders, Sweden
http://rubidium.dyndns.org/cag/