And finally, this is the extent of my info on the subject. From harmony Central:

 

Memory is a significant issue with the OB series of instruments (well any instrument with memory) in that it will do some pretty crazy things if the memory is bad or scrambled. Sometimes loading the memory is not enough. If problems still persist after loading the memory and replacing the battery, you may have to follow the procedure below:

Set unit to manual mode
pick patch A1
Turn every pot a couple times
Turn on and off every switch a couple of times.
This includes all the page 2 stuff also.
After the above, set a simple patch that you can easily identify. One oscillator, wide open filter, gate like envelope.
After you have the patch, write it to memory location A1.
Verify the patch is there by switching to another patch and then returning to A1.
Once verified, write this patch to every memory location. A real pain for those with 120 programs.
Load your program tape.

Scrambled memory creates issues because many times the value held in memory is is outside the memory address range. So where the expected value is 0-255 and the actual value is -1,304,495. CPUs do not do well with this type of issue. Rotating the knobs allows the instrument to create a value within the expected value.

Wes Taggart
Analogics
http://www.analogics.org/

 

 

So I finally figured out the problem with this machine. I was on the phone with Bruce Forat about my Linn 9000 and he suggested disabling the midi kit and taking the machine back to stock. I did so an autotune works fine now.