Texas Instruments TI-92 II - great find !!

[Dave Britten]

(07-02-2021 12:23 AM)Steve Simpkin Wrote:  My wife gave me a nice clean original TI-92 as a gift and it worked fine at first. After a few days it would not turn on anymore. I changed the batteries and it worked for a day and then wouldn't turn on. I disassembled it and found that one of the pads on the main circuit board had corroded through where the four battery terminal contacts pressed against it (see pictures). I bent the contacts slightly so they would press against the good areas of the pad. It worked reliably after that.

I've got an original 92 (upgraded with the Plus module) that kind of acts like that. Maybe I need to open it up and clean these contacts with a little Deoxit and such. Perhaps add a few jumper wires if any of them are really bad.