hp32SII

[LinusSch]

I'm somewhat a beginner, but I'd start by measuring the battery voltage, making sure it is in spec. Then measure the current draw. Is it shorted? Is it trying to do anything at all?

If not trying to do anything at all, maybe the on key is having troubles?

As for whether it's worth saving... the 32sii is very useful as a compact calculator, but the DM32 replaces it neatly. It's not rare. It is better saved than scrapped, absolutely, but you don't need to be afraid of ruining something precious, so go ahead trying to save it and try to learn as much as possible in the process. That is generally the best use of something that is dead but replaceable!