Crumar Musical Instruments User Group.

I have a bit99 (black) and I had it in repair to get a osc fixed, and 
it worked fine so far, except.. if that thing would just stay in tune! 
Sometimes it gets back in tune when I turn it on, but it's mostly 
wildly detuned, propably to the exact same levels each time. The 
display tells me that nothings changed, but that thing sounds totally 
out of tune at 00! Any ideas how to fix that problem?