Fontos klub információ
Important club information
Welcome, Guest. Please login or register.


Author Topic: KB Membrane Fix? (Read 514 times)

Offline Tech

  • Newbie
  • Posts: 22
  • OS:
  • Mac OS X 10.15.1 Mac OS X 10.15.1
  • Browser:
  • Safari 13.0.3 Safari 13.0.3
    • View Profile
KB Membrane Fix?
« on: 2020.January.19. 22:48:34 »
Some keys in my E64's keyboard stop registering inputs. It seems that the membrane is defective. I found replacements online, but the prices are quite high! I wonder if there's a way to fix the one I have without the need for a new replacement? Any ideas please?

Thank you.

Offline SlashNet

  • EP user
  • *
  • Posts: 400
  • Country: ua
  • Enterprise 128K | Cubietruck
  • OS:
  • Windows NT 10.0 Windows NT 10.0
  • Browser:
  • Chrome 79.0.3945.118 Chrome 79.0.3945.118
    • View Profile
    • Russian info about Enterprise
Re: KB Membrane Fix?
« Reply #1 on: 2020.January.19. 23:03:32 »
Hi!
Usually, old membranes have cracks near the end of ribbons.
You can try to carefully cut off damaged area.


Offline Zozosoft

  • EP addict
  • *
  • Posts: 13627
  • Country: hu
  • OS:
  • Windows 7/Server 2008 R2 Windows 7/Server 2008 R2
  • Browser:
  • Firefox 72.0 Firefox 72.0
    • View Profile
    • http://enterprise.iko.hu/
Re: KB Membrane Fix?
« Reply #2 on: 2020.January.19. 23:12:50 »
It is usually broken at the motherboard connection. Cut the broken part (few mm), and it will start working again :-)
Repeat it when broken again... problem will come when the connecting tail becomes too short to be plugged in...
In this case build an expansion cable.
Membrane connectors:
Original types: MOLEX 5229-08CPB, 5229-10CPB
Chinese alternatives: CONNFLY DS1020-08ST1D, DS1020-10ST1D
At the motherboard connection I use Preci-Dip pin headers.
« Last Edit: 2020.January.20. 10:02:30 by szipucsu »

Offline Tech

  • Newbie
  • Posts: 22
  • OS:
  • Mac OS X 10.15.1 Mac OS X 10.15.1
  • Browser:
  • Safari 13.0.3 Safari 13.0.3
    • View Profile
Re: KB Membrane Fix?
« Reply #3 on: 2020.January.20. 00:04:48 »
Thank you guys. I'll check the connections and remove the damaged part if needed 👍

Offline Judge

  • EP user
  • *
  • Posts: 280
  • Country: hu
  • OS:
  • Windows NT 10.0 Windows NT 10.0
  • Browser:
  • Chrome 79.0.3945.130 Chrome 79.0.3945.130
    • View Profile
Re: KB Membrane Fix?
« Reply #4 on: 2020.January.31. 17:35:36 »
high quality new keypad membrane made in Hungary 7200HUF = cc.  23EUR

24315-0
Üdv.Judge