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General Category => Technical Support => Topic started by: zeropolis79 on 18:39, 17 June 21

Title: 6128 Plus keys issue
Post by: zeropolis79 on 18:39, 17 June 21
Dusted of my 6128 Plus to try out a new project only to find out the 3, X and C keys aren't working.


Could this be a membrane issue or one of the chips?


Many thanks..
Title: Re: 6128 Plus keys issue
Post by: Bryce on 20:01, 17 June 21
If it's only those three keys it's either a crack/break in the membrane or (more likely) dust and dirt on the membrane.

Bryce.
Title: Re: 6128 Plus keys issue
Post by: Phantomz on 20:03, 17 June 21
I had this happen to my 6128 plus, all I did was remove the membrane carefully and put it back together, I believe it happens because the two parts of the membrane got stuck together.

It's easy enough to do as the keyboard is only clipped together so you haven't got loads of small screws to unscrew like on some keyboards.

I'd give it a go if I was you.    ;)
Title: Re: 6128 Plus keys issue
Post by: zeropolis79 on 20:22, 17 June 21
Thanks - will give ti a try..
Title: Re: 6128 Plus keys issue
Post by: zeropolis79 on 21:17, 17 June 21
Problem sorted thanks!
Title: Re: 6128 Plus keys issue
Post by: zebulon158 on 21:57, 17 June 21
Another possibility for CPC Plus (in french) :
Réparation du clavier des CPC+ [Quasar Net] (cpcscene.net) (http://quasar.cpcscene.net/doku.php?id=electronique:reparation_clavier_cpc_plus)

Title: Re: 6128 Plus keys issue
Post by: Maniac on 22:13, 17 June 21
I can confirm that removing the keyboard connector and reinserting it fixes the issue for a while and then it comes back again. I even managed to get another membrane when Trade In Post still had some in stock. This seemed to be a longer term fix but it too more recently has had the same issue. I’ve yet to be brave enough to remove the resistor network which I’d rather do properly than break it off as described in the article.