I have some good experience with soldering and board repair.
It looks to me like a few of the solder joints may have too much solder. Notice how some of the traces on the brd are isolated from the rest of brd by dark lines. Look where they go to the soldered pins and excess solder could cause a solder bridge .

I use a hand operated " solder sucker" or fine copper mesh to suck up solder.

You had said there was power where there should not be. Maybe this is it. Goodluck Tom


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