I would, but one of the main keys stopped working. It is a very old solar scientific calculator and large for a calculator. If I could open up the case withou

I would, but one of the main keys stopped working. It is a very old solar scientific calculator and large for a calculator. If I could open up the case without cracking it I would attempt a repair, but I know I would end up breaking it :( Now, I mainly use bc(1).