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Old 17 February 2011, 19:22   #1
source
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A3640 cap replacement prob

I went and removed the caps from my a3640 rev 3.0 board to realize I damaged the pads under c107. I am having some difficulty tracing where the pads attached. when I look at the board with the cpu away andto the right I am not sure where the left and right pads trace bact to. It looks like the left pad may trace back to a hole just above it, but thevright pad I am not sure where it goes to.
Thanks
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Old 17 February 2011, 20:22   #2
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Quote:
Originally Posted by source View Post
I went and removed the caps from my a3640 rev 3.0 board to realize I damaged the pads under c107. I am having some difficulty tracing where the pads attached. when I look at the board with the cpu away andto the right I am not sure where the left and right pads trace bact to. It looks like the left pad may trace back to a hole just above it, but thevright pad I am not sure where it goes to.
Thanks
A3640 electrolytic caps connect to +5V and GND with the polarity shown incorrectly on the PCB. So if you can't find the missing pad or trace you can jumper to the nearest +5V source or GND as needed.

P.S. http://www.amiga-hardware.com/showha...cgi?HARDID=223 has images of a bare PCB but I don't know if they have enough resolution to find your missing trace. Also check out http://amiga.serveftp.net/A3640_capacitor.html

Last edited by SpeedGeek; 18 February 2011 at 18:30.
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