A2000 keyboard issue

20 March 2018, 07:24

My Amiga 2000 has been having a weird keyboard issue. Often after booting, the first key I press acts like it is held down so I get 200 or so of that char. Or, I'll click a key and a minute or two later it will register.

I figured it was just my original keyboard getting old, so I picked up the Lyra-3 PS2 adapter. It does the same thing.

When I took out my leaking battery, it had made a little mess on the mother board but it didn't look too bad. I notice the keyboard socket is right near there though; anyone see something like this?

Robbie · 20 March 2018, 10:09

That happened with a Cherry keyboard I used to have. Didn't happen with any other keyboards so I put it down to a faulty chip in the keyboard itself.

idrougge · 21 March 2018, 02:00

I think Cherry keyboards have a capacitor that goes old after twenty years.

There are also some fixes introduced in later A2000 board revisions to handle keyboard variations.

Signman · 22 March 2018, 14:01

I was having a lot of issues including that one. I used contact cleaner on all areas and worked pretty well.
Worth a try.

02 April 2018, 21:25

Contact cleaner did the trick! It looks like some corrosion did sneak up on the socket housing so it might need to be replaced eventually.

20 March 2018, 07:24	#1
mEnTL32 Posts: n/a	A2000 keyboard issue My Amiga 2000 has been having a weird keyboard issue. Often after booting, the first key I press acts like it is held down so I get 200 or so of that char. Or, I'll click a key and a minute or two later it will register. I figured it was just my original keyboard getting old, so I picked up the Lyra-3 PS2 adapter. It does the same thing. When I took out my leaking battery, it had made a little mess on the mother board but it didn't look too bad. I notice the keyboard socket is right near there though; anyone see something like this?

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20 March 2018, 10:09	#2
Robbie Registered User Join Date: May 2015 Location: Southbourne Posts: 75	That happened with a Cherry keyboard I used to have. Didn't happen with any other keyboards so I put it down to a faulty chip in the keyboard itself.

21 March 2018, 02:00	#3
idrougge Registered User Join Date: Sep 2007 Location: Stockholm Posts: 4,332	I think Cherry keyboards have a capacitor that goes old after twenty years. There are also some fixes introduced in later A2000 board revisions to handle keyboard variations.

22 March 2018, 14:01	#4
Signman Registered User Join Date: Sep 2016 Location: Michigan Posts: 384	I was having a lot of issues including that one. I used contact cleaner on all areas and worked pretty well. Worth a try.

02 April 2018, 21:25	#5
mEnTL32 Posts: n/a	Contact cleaner did the trick! It looks like some corrosion did sneak up on the socket housing so it might need to be replaced eventually.

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