Micromega problem

I have two micromega stage 1 players. 1 of them is fine no problems with skipping or anything, the other will only read about 45 seconds of track one then starts jumping around on track 1 only (never changes tracks). The problem is not with the transport, I know this because I've swapped them from each player and they both work perfectly I've also changed the dac from player to player with the same results (no problems there). On a whim I put the main board of the none working one in the freezer for a couple of hours and tried it, what a difference no skipping reads all the tracks works perfectly until it reaches room tempurature then back to skipping. Does anyone have any idea what this could mean? overheating was my first assumption.