Amiga hardware info, help and support with a focus (but not limited to) North American NTSC experiences. Open to all.
User avatar
oldbull

by oldbull posted Tue Jan 22, 2019 7:28 am

How can I identify what membrane is in my specific A500 keyboard without completely disassembling the keyboard?

I found an online listing for one specific version of that part.
User avatar
Dynamic_Computing

by Dynamic_Computing posted Sat Feb 02, 2019 11:10 am

It seems that if the membrane has one physical connection to the PCB it is a newer version. If it has two physical connection it is the older dual membrane units. I have not been able to find a replacement dual membrane.
https://www.youtube.com/c/10minuteamigaretrocast
@10marc1 on Twitter
User avatar
Mr.Toast
Roseville, CA

by Mr.Toast posted Sat Feb 02, 2019 6:38 pm

Yes, what he said^. When you see the KB with the case off, the Mitsumi boards will have a single ribbon flex cable going to the small PCB in the upper right corner. The PCB will only have one flat flex cable receptacle.

Post a picture if you have any doubts!
User avatar
oldbull

by oldbull posted Sat Feb 02, 2019 9:49 pm

Without taking the keyboard apart, I can only see a single ribbon between the keys and the PCB. The motherboard is Rev6A so I hope that bodes well for having the newer keyboard membrane. I did see the word Mitsumi printed on the PCB.
User avatar
Mr.Toast
Roseville, CA

by Mr.Toast posted Sun Feb 03, 2019 11:08 am

You're good to go then. I ordered a replacement membrane from the UK a few months back and it works flawlessly. Very good condition stock they have at Vesalia's listing (can't find the link atm).
User avatar
oldbull

by oldbull posted Sun Feb 03, 2019 12:11 pm

Good to know. I currently have a refurbished floppy drive in transit. As soon as the A500 gets into Workbench, I can check the keyboard. Hopefully I can start using the computer and just order a membrane to keep handy.

Who is online

Users browsing this forum: No registered users and 5 guests