Hugofisch
New Member
- Joined
- Dec 27, 2021
- Messages
- 2
Hi,
my first post in this forum and I hope I find someone who can help me
I have here a PET 2001-B-32 with the business keyboard installed. And with this keyboard I have a lot of trouble.
4-5 keys are not working. I cleaned them and tested them with a multimeter tool. I also build
a small breadboard test setup with LEDs to test each connection. But I can't get these 4-5 keys get to work proper again.
Sometimes they have contact, sometimes they don't. All other keys are working fine. And because the keys
are in different rows and columns in the keyboard matrix, I exclude the 6520 as a problem.
On my test breadboard I can get the keys to work, but not very reliable.
I cleaned all contacts with contact cleaner. I also tried to clean the key contacts with sandpaper, but this also didn't work.
Has any of you experience with this kind of keyboard?
Or do you know where I can get/buy an other working keyboard? I searched on eBay, but that was not very successful
Thank You for any help.
my first post in this forum and I hope I find someone who can help me
I have here a PET 2001-B-32 with the business keyboard installed. And with this keyboard I have a lot of trouble.
4-5 keys are not working. I cleaned them and tested them with a multimeter tool. I also build
a small breadboard test setup with LEDs to test each connection. But I can't get these 4-5 keys get to work proper again.
Sometimes they have contact, sometimes they don't. All other keys are working fine. And because the keys
are in different rows and columns in the keyboard matrix, I exclude the 6520 as a problem.
On my test breadboard I can get the keys to work, but not very reliable.
I cleaned all contacts with contact cleaner. I also tried to clean the key contacts with sandpaper, but this also didn't work.
Has any of you experience with this kind of keyboard?
Or do you know where I can get/buy an other working keyboard? I searched on eBay, but that was not very successful
Thank You for any help.