Need some help with getting my IBM beam spring display writer to work
Posted: 27 Jun 2021, 02:27
Hello again. Long time no post. Figured this would be the right place in the forum.
So my beam spring display writer has gone bonkers. It has been sitting for awhile. I plugged it in and got no response when I tried to type. When I fire up xwhatsit's capsense utility, the voltage threshold was 21975!!!! The usual range should be between 100 and 200 and my other beam spring sits at about 130. I was able to lower the threshold into the usual range but there are an unusual amount PRESSED keys and other keys are non-responsive. Basically, I can't get a proper voltage threshold and the keyboard will not work properly.
Any insight on this? Anybody else run into a similar issue? Is the controller or PCB fried? Am I gonna have to replace the controller? Any help would be appreciated.
So my beam spring display writer has gone bonkers. It has been sitting for awhile. I plugged it in and got no response when I tried to type. When I fire up xwhatsit's capsense utility, the voltage threshold was 21975!!!! The usual range should be between 100 and 200 and my other beam spring sits at about 130. I was able to lower the threshold into the usual range but there are an unusual amount PRESSED keys and other keys are non-responsive. Basically, I can't get a proper voltage threshold and the keyboard will not work properly.
Any insight on this? Anybody else run into a similar issue? Is the controller or PCB fried? Am I gonna have to replace the controller? Any help would be appreciated.