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Old 12-01-2007, 12:19 PM   #1
Fizzy
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Default Amiga 4000 Mouse and Keyboard problem?

Hi,

Just when I was sorting out my A4k Rev D system for sale (and had a couple of interested parties) it decides to play up on me.

Basically, found this afternoon that the mouse doesn't work (can't move the mouse pointer) although buttons work as I can get into the early startup menu - although can't move mouse there either.

It was fine last time I used it a couple of days ago (at most). There was a big thunderstorm in the area this morning with some close lightening strikes, but the A4K wasn't plugged into anything. :-?

Keyboard also doesn't appear to be working. Caps lock light works, so there's power to it - but I can't do any keyboard shortcuts, and Ctrl-A-A reboot doesn't do anything - just flashes the Ctrl light once.

I take it this sounds like one of the CIA chips has died? Great timing! :getmad:

Anybody any suggestions as to any possible method of repair in the UK? Or would it be easier to simply get a new motherboard (would like to get a Rev D like this one).

May end up just stripping it for spares if it comes to that... :-(
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Old 12-01-2007, 12:23 PM   #2
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Default Re: Amiga 4000 Mouse and Keyboard problem?

You can drop it into our units in Cardiff - we will be able to test it.
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Old 12-01-2007, 12:57 PM   #3
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Default Re: Amiga 4000 Mouse and Keyboard problem?

Forget you were that close. Thought you were in Caerphilly though?

Anyhow - It boots up ok, audio's fine etc. Loaded up a couple of games and buttons work on the joystick, but not the directionals - so does look like a CIA chip.

I take it all I need to bring is the base unit? Whats the best time to pop it around, and can you pm me your address?

Many Thanks!
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Old 12-01-2007, 01:04 PM   #4
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Default Re: Amiga 4000 Mouse and Keyboard problem?

From 2006 have units in Cardiff:

http://www.leamancomputing.com/catalog/?page=contact

Bring the A4000 in on Monday or Tuesday (call us on 02920 564676)
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Old 12-01-2007, 05:21 PM   #5
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Default Re: Amiga 4000 Mouse and Keyboard problem?

Well, turns out the faulty CIA chips is the metal one at the front which you put a key into... :-D

Initial test seem to indicate the issue was a faulty keyboard lock switch on the front of the A4k. Dunno if its the switch, or the wire has shorted or whatever, but when I disconnect the keyboard switch lead it all works!

So thankfully doesn't actually seem as bad as I thought, unless its an intermittant fault. I'll test it over the next few days and see how it goes.

Fingers crossed! :-)
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