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-   -   Specification for A1200 Caps Lock LED? (https://eab.abime.net/showthread.php?t=67322)

rikbliz 09 January 2013 09:54

Specification for A1200 Caps Lock LED?
 
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demolition 09 January 2013 10:25

I think if you find a normal green LED it should work fine. Worst case you burn the new LED if the forward voltage or current handling is lower. I don't think the Amiga will mind much. I'm not 100% sure but I guess the LED is connected to pin 31 of the keyboard connector which is connected to U13 through a 100 ohm resistor, which is limiting the current.

Usually a green LED is around 2.2V forward voltage drop and 20mA max current.

Edit: It is not multi-color, and I've never seen an Amiga glow red in caps lock. :-)

rikbliz 09 January 2013 10:31

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demolition 09 January 2013 10:41

Schematics can be found here:
http://www.amigawiki.org/doku.php?id...ice:schematics

roy bates 09 January 2013 12:15

the led is just a standard 3mm led with the legs bent at 90 degrees,there normally red or green. in your case green.

Turran 09 January 2013 13:03

Theres usually a few on ebay for sale too.

http://search.eim.ebay.se/Datorer%20...+led&ect=285-1

rikbliz 09 January 2013 14:31

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BarryB 20 January 2013 00:59

FWIW, I just replaced mine with an UltraBright Green LED off ebay, no spec as to voltage/current but it works. I'm not sure where my original LED went as last time I opened the keyboard up there was just some black residue where the LED should be, so the rubber must have perished and the LED fell out when I opened the keyboard up. The only thing I had to do was pack the rectangular slot where the original rubber bit went with a bit of pencil eraser rubber so the legs of the LED touched the contacts on the membrane when screwed back together, now I have a blindingly bright CAPS Lock LED :D


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