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Amiga computer related discussion => Amiga Marketplace => Topic started by: orange on September 11, 2007, 07:19:23 PM

Title: A500 keyboard membrane
Post by: orange on September 11, 2007, 07:19:23 PM

Where can I find membrane for A500 keyboard?
I destroyed mine  :-(
I noticed that there are several types of them, this (http://www.fileden.com/files/2006/9/12/214909/Amiga/A500_kbd_up.jpg) is the one I need.

Title: Re: A500 keyboard membrane
Post by: Zac67 on September 11, 2007, 08:06:12 PM

You can repair damaged traces with liquid silver ("Leitsilber") - if the damage isn't too extensive.

Title: Re: A500 keyboard membrane
Post by: Hodgkinson on September 11, 2007, 08:14:20 PM

Agreed. Apparently one of my friends repaired a A4000 keyboard with rear-window-demister paint , though expensive, it worked. Not sure if its the same as liquid silver but it sounds like it. Can be bought from a good car shop.

Hodgkinson.

Title: Re: A500 keyboard membrane
Post by: CLS2086 on September 11, 2007, 08:41:18 PM

Hi,
please make a photo of the damage you made, maybe it could be resolved.

Title: Re: A500 keyboard membrane
Post by: orange on September 12, 2007, 07:16:42 AM

no, it can't be repaired, I have tried special keyboard repair kit with graphite and all.
the problem is in those two connectors, I damaged them badly.

Title: Re: A500 keyboard membrane
Post by: Zac67 on September 12, 2007, 07:28:01 AM

A friend of mine actually repaired something like that, too. Don't remember exactly what exactly it was, but it was something very similar. He used a flat cable salvaged from somewhere, glued it on top of the membrane and bridged the contact gaps with liquid silver - don't know how long it worked, but it worked.

Given the price of an A500, you're probably best off buying and salvaging one.

Title: Re: A500 keyboard membrane
Post by: orange on September 13, 2007, 08:23:02 AM

yes, but well this A500 is 'special', it is my first Amiga and the only one bought new, not secondhand
I have found very similar keyboard but with German keys, Can I use its membrane? (will extra keys just be ignored?)

Title: Re: A500 keyboard membrane
Post by: Zac67 on September 13, 2007, 07:07:57 PM

The membrane is the same for all keyboards, just the caps vary. Should do.

Title: Re: A500 keyboard membrane
Post by: odious on September 14, 2007, 03:27:21 AM

Quote

orange wrote:
no, it can't be repaired, I have tried special keyboard repair kit with graphite and all.

I am having the same problem. I've repaired a few keys with liquid silver but some traces brake under where other trace crosses over. Impossible to repair.

I am taking a different approach. See here:

http://www.amiga.org/forums/showthread.php?t=31051

Hope it helps. I couldn't as of yet make it work though.

Title: Re: A500 keyboard membrane
Post by: orange on September 14, 2007, 07:33:37 AM

I have build PC adapter years ago, and no PIC16F84 does not need special code its basically the same as pic16c84 (with some extra protection). schematics in Protel (http://tesla.rcub.bg.ac.yu/~dragic/Amiga/Amiga_PCB.htm)

I don't like the adapter (it seems to have some small delay) or PC keyboards, they don't detect multiple keypresses.

Title: Re: A500 keyboard membrane
Post by: Lockon_15 on September 14, 2007, 08:19:28 PM

Hmm, looks like you have Rev5 A500...
My Tiger Edition has exactly the same keyboard membrane like yours...