Post by Bosco on Mar 1, 2019 2:38:10 GMT
Hello to all.
Awhile back I posted about an issue with letters keys on my 2100. Certain letter keys, when pressed in combination with any number would cause seem to behave normally. The rotating plate would turn until it hit a stop pin, the keys would pop back out, all seemed normal. Except the letter coil would not fire. So, no selection. This began months ago with two letter keys. Then, slowly more were involved. B went, then Q, C, G, V, etc. One at a time over the course of a few months. very odd.
Folks here suggested dirty inner workings. I tried everything suggested, mostly pressing the effected keys over and over, to see if they would start working again. No dice. dirt didn't seem to be a problem.
The other day my wife, who has a nose like a blood hound, complained about a "burning" smell. The 2100 is always the first suspect. I was going to open up the front anyway, to fix one of the program page flippers. While I had it open, and with the power on, I noticed something. A wisp of smoke. I quickly found the source.
A very hot wire resistor at the left rear of the keyboard was leaning back against a bundle of wires from the keyboard. The smoke was coming from burned insulation. After letting the resistor cool off, I simply pulled it back from the wires. Let me quickly say, this wasn't a three alarm fire, the smoke was slight. However, this might have been going on for at least seven months -- dating back to when the keyboard was working perfectly.
I have not pulled the keyboard out, and probably won't for awhile. However, I would like thoughts. Could this be the source of the keyboard mystery? Could this account for these keys malfunctioning? Just wondering because nothing else makes sense.
Bos
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