I have a 34C in excellent physical condition. Judging by the weight and the very firm key action, I believe it is one of the models which has the chips held in place by a pressure plate or whatever, not soldered into place.
It works fine, exceot that occasionally one LED segment will go out. The same segment goes out on all digits simultaneously. The calculator still operates properly, and slightly squeezing or flexing the case just a tiny bit brings the segment back.
It seems likely that this could be due to a chip being slightly misaligned, or perhaps having a bit of oxidation or something on the leads.
1. Do the spice experts here think this would be a correct diagnosis?
2. How big a deal is it to diassemble and rectify such a problem?
Any advice is appreciated. Thanks, Don