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09 January 2013, 09:54
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#1 |
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Registered User
Join Date: Aug 2012
Location: Trenton, Ohio
Posts: 113
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Specification for A1200 Caps Lock LED?
(deleted)
Last edited by rikbliz; 06 July 2018 at 09:20. |
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09 January 2013, 10:25
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#2 |
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Unregistered User
Join Date: Sep 2012
Location: Copenhagen / DK
Age: 43
Posts: 4,190
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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. :-) |
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09 January 2013, 10:31
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#3 |
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Registered User
Join Date: Aug 2012
Location: Trenton, Ohio
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(deleted)
Last edited by rikbliz; 06 July 2018 at 09:20. |
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09 January 2013, 10:41
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#4 |
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Unregistered User
Join Date: Sep 2012
Location: Copenhagen / DK
Age: 43
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Schematics can be found here:
http://www.amigawiki.org/doku.php?id...ice:schematics |
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09 January 2013, 12:15
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#5 |
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Registered User
Join Date: Apr 2011
Location: birmingham
Age: 55
Posts: 2,827
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the led is just a standard 3mm led with the legs bent at 90 degrees,there normally red or green. in your case green.
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09 January 2013, 13:03
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#6 |
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Moderator
Join Date: May 2012
Location: Stockholm / Sweden
Age: 49
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09 January 2013, 14:31
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#7 |
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Registered User
Join Date: Aug 2012
Location: Trenton, Ohio
Posts: 113
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(deleted)
Last edited by rikbliz; 06 July 2018 at 09:20. |
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20 January 2013, 00:59
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#8 |
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Amigaholic
Join Date: Dec 2009
Location: UK
Posts: 4,676
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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
Last edited by BarryB; 20 January 2013 at 01:14. |
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