04-09-2025, 04:19 AM
Before I take a look at the Pioneer Laser Disc player, I had to clear off my workbench.
Last Sunday I was followed home from the market by a very nice desk top calculator. Mains powered and containing ten vacuum fluorescent display tubes. Finally a calculator with a display large enough for me to read.
This thing is quality all the way. So refreshing to see something built to last.
Testing revealed something I've never before come across in a calculator. One of number buttons, number eight (8) was exhibiting intermittent switch de-bounce problems. Sometimes it would multiple input on depress, and sometimes upon release.
While I had the calculator apart to clean the switch, I glued up a crack in the case. It all went well and the crack is invisible.
The model? As best I can determine, it is a Litton, Imperial, Royal IC-130
As always, I take many photographs of whatever I work on. I have many schematics of televisions that on longer exist but no one knows what they looked like.
Best Wishes.
Last Sunday I was followed home from the market by a very nice desk top calculator. Mains powered and containing ten vacuum fluorescent display tubes. Finally a calculator with a display large enough for me to read.
This thing is quality all the way. So refreshing to see something built to last.
Testing revealed something I've never before come across in a calculator. One of number buttons, number eight (8) was exhibiting intermittent switch de-bounce problems. Sometimes it would multiple input on depress, and sometimes upon release.
While I had the calculator apart to clean the switch, I glued up a crack in the case. It all went well and the crack is invisible.
The model? As best I can determine, it is a Litton, Imperial, Royal IC-130
As always, I take many photographs of whatever I work on. I have many schematics of televisions that on longer exist but no one knows what they looked like.
Best Wishes.
