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Old 3rd February 2011, 01:32 PM   #1
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Join Date: Aug 2007
Default Adcom GFA-545

The Adcom that i just got from e-bay came without the on- off light in it.Did they makes some like that? It has the hole for it but no light i opened it up and seen no light in it .Anyway how hard would it be to put one in any help would be great.
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Old 4th February 2011, 03:30 AM   #2
eidling is offline eidling  United States
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Join Date: Oct 2006
I don't know the value of the bulb, some of the more technical people can answer that, but I just happened to have my 545 open when I read your post, so here are photos of what you will see inside (if you get a really tiny hex wrench to remove the screws on the top panel).

I hope the photos will help you.

adcom gfa-545 power light wiring | Flickr - Photo Sharing!

close up and personal | Flickr - Photo Sharing!
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Old 4th February 2011, 06:59 AM   #3
singa is offline singa  Singapore
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Hi, It's not a light bulb but a LED (light emitting diode).This should be easy to
do,just get a red led of suitable size, 3mm or 5mm (large) in diameter and two lengths of wire can be same colour ( just know which is which). The positive red to the longest lead of the led and the negative black to the shorter one.If you are using a canabalised led from a junk pcb ,the horizontal tab/structure in the led is the negative tab/lead.

I don't see any current limiting/brightness resistor.Maybe it's in the power
supply pcb. Singa
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Old 4th February 2011, 03:08 PM   #4
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Yes the pic was a great help thank you,,By the way how do you like your amp?Just got this a few weeks ago and i really enjoy it.
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