AMSTRAD CPC6128+ Keyboard not working

[JoelKind]

Hello,

I have a CPC 6128+ but the Keyboard do not
Work right. Some Keys don't work, about 10 Keys,
I have not count. Maybe the Keyboard Controller
Is broken, what Chip on the Mainboard work for that?

Or is something wrong with the CPU (Z80)

Maybe someone have connect or disconnect without
Power OFF! I don't know.

I have bought on eBay.

The Keyboard is NOT! The Problem, all keys WORK!

I have tested on CPC 464+, all Keys work.

Can someone HELP! Me out, find the Problem.

greetings

Joel Kind.

[Kris]

look here:
   https://quasar.cpcscene.net/doku.php?id=electronique:reparation_clavier_cpc_plus

[GUNHED]

Kris was faster! 

Yes, in brief: Get rid of the resistor network and your keyboard problem shall be fixed.
(I did that with two 6128plus successfully too.)