Texas Instruments TI59 – Repair of my old calculator

Texas Instruments TI59 - Repair of my old calculator

Years ago I had packed my old school calculator, the TI-59 from Texas Instruments, carelessly into a box. There it lay for several decades, until I came across this little treasure chest a few days ago, and all kinds of treasures came to light. Among other things also the TI-59, the battery had run out and it didn’t make a sound anymore. Since I thought that such an old treasure does not belong on the garbage, I have made myself to the repair.