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Old 06-14-2015, 05:42 PM   #7 (permalink)
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Originally Posted by Lectrik View Post
Check for continuity between J2 Pin 2 and U4 Pin 13. Apparently I must have blown the trace off because I had an open.

It still didn't fix my communication problem but gives you something to check..
I have 0.00 ohms on that link. So that should not be the problem.

Looking at the board under the magnifier ... I am pretty embarrassed by the re-soldering that I did. It looks like pin 1 on U4 is a cold solder. Perhaps I should go over the board again with a soldering iron and try to make it a bit more of an example of what you SHOULD do instead of the present state - an example to AVOID.

It's been years since I soldered anything ... but it should come back with practice!
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