Hello Wilson,
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I suggest you first remove both power supply boards and verify that there are no shorts on the Vcc and Vdd lines.? The pin assignments from the bottom view of the QMX board are in a PDF.?
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I assume this is a QMX and not a QMX+.? They are different in board layout.? There are also differences in board revisions.? Supplying the volunteers with both helps us give you better suggestions.
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There is also a test process in the files section of the group for the power supply boards:
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I hope the above helps.
73
Evan
AC9TU
