I get a bunch of junk on the front panel of the GC and the detectors I have (PID and FID) end up going cold. It is a bunch of work to re-calibrate due to software stuff we have to do for the method we are running. Plus the 1/2 hr runs I do take a while. Anyway, is there a button cell in the GC that I could replace? I miss the 5890 I was using. It was such a trooper in regards to power failures and being stable.