These boxes of goodies arrived today.
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First thing I did was to power up one of the power supplies.. Where the overvoltage protection kept on tripping
The 5 V was spot on..
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The 12 V did not get much past 8volts because it was powering down.
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Looking at the input voltage (13V) and the voltage across the voltage protection zener (11.40v)
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Seems for some reason China fitted a 13V zener instead of a 20V one
But I will double check they did not mix the 20V 5V and 12V diodes up just in case..
Frankly annoying as at a minimum I now need to change 100 didoes