I read with some interest the discussion about repairing a 32E. I've got a 42s which is fairly early (with the plastic protector over the LCD). Its problem is the 8 button and some top-row keys don't always register until they are pushed a few times...it also has some dust on the inside of the plastic display protector. It has done a lot of work (surveying) in dusty places without, at first, being protected too carefully. It has never de-programmed when the batteries get low, unlike my other two, so it's my favorite. I still use it (partly to save the others) but the button problem is a major nuisance.
Can this be repaired? Richard