I fixed mine he same way, by cleaning the battery contacts, just this morning, in August of 2020:
https://superaquarian.blogspot.com/2020/08/texas-instruments-ti-35-plus-vintage.html
I agree - i used a bit of rubbing alcohol on the contacts and bent them inward a slight bit - had to twist the case a bit too but now it works wonderfully and i've had this calculator since it was first out on the market - love it!
Make sure the battery contacts are clean. I just fixed mine, as it had been sitting for some years and the batteries went bad.
I gently cleaned any "green mold" from the contacts with a light Scotch-Brite pad and some electrical contact spray that I got at a local hardware store.
I tested the batteries with my digital meter to make sure they were 1.5V or more and put everything back together. Works great!
Give it a whirl---this is a nice little calculator. I bought mine in 1990-1991 and it's gotten me through undergraduate and graduate school...
859 views
Usually answered in minutes!
×