Amiga 4000 Mouse and Keyboard problem?

[Fizzy]

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...  :-(

[Fizzy]

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!

[Fizzy]

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! :-)