One of my Polaris units has that problem-- usually gets worse when it hasn't been turned on in a while.
I typically turn it on/off and find it boots eventually (like after 17-25 tries). Maybe try that to see if there are further problems before you deconstruct and/or do something that requires a full re-calibration? I've been meaning to put a scope on the reset circuit but I did swap power supplies once and it didn't help.
Good luck!
-Ben