Camper6
Well-known Member
- Location
- Northwestern Ontario Canada
I found this calculator which hasn't been used for quite some time. I decided to restore it or throw it out.
It's a handheld calculator with a tape and a printout. You can select display or print.
But it doesn't have replaceable batteries. Just rechargeables. There is a port to plug in an adapter to recharge the batteries.
I took it apart because it wasn't operating. It operates on 2.4 volts d.c. I use AA rechargeables all the time and they are 1.5 volts each. But recharging them doesn't get to the full 1.5 volts.
So all I did was take out the old batteries and replace them with new rechargeables hooked up together to output about 2.5 volts and soldered into the previous contacts making sure the positive and negative poles were properly connected.
It works great. I love taking stuff apart to see how it works and if I can get it working so much the better. The display on those old calculators are so much brighter than than the new ones.
And a tape? Well that's handy as well. There is also a small roller holding ink which was dry. I used printer ink and I guess stamp pad ink would work as well.
Have you restored anything old to operating condition?
It's a handheld calculator with a tape and a printout. You can select display or print.
But it doesn't have replaceable batteries. Just rechargeables. There is a port to plug in an adapter to recharge the batteries.
I took it apart because it wasn't operating. It operates on 2.4 volts d.c. I use AA rechargeables all the time and they are 1.5 volts each. But recharging them doesn't get to the full 1.5 volts.
So all I did was take out the old batteries and replace them with new rechargeables hooked up together to output about 2.5 volts and soldered into the previous contacts making sure the positive and negative poles were properly connected.
It works great. I love taking stuff apart to see how it works and if I can get it working so much the better. The display on those old calculators are so much brighter than than the new ones.
And a tape? Well that's handy as well. There is also a small roller holding ink which was dry. I used printer ink and I guess stamp pad ink would work as well.
Have you restored anything old to operating condition?
