TI-58C and TI-59

[Xorand]

And then there were three. I was looking for another 58C on the auction site and had one pop up for a cheap buy it now price. Looked in pretty good condition, so I nabbed it. Though the auction listing said 58C, it actually was a 58. And it works really well. So now I have a 58, 58C and 59.

One thing I had noticed when I got the 58C is that its display was a little dimmer than the 59. I subsequently found that the display on the 58 is dimmer still. I think there is a component (or components) that the internal power supply has that might need refreshing. (All three are running newly rebuilt battery packs, so it isn't battery voltage). I'll dig up my service manual and give them a check over the next couple days.