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KKChan I had the same problem as you did. The problem is that there is an SS54 schottky diode across the current input (as protection) and its breakdown voltage is only rated at 40V. Anything above 40V will blow this diode. I changed the diode to a 1N4007 (not ideal but that was what I had) and everything works OK now.

Magicld 2018-02-24 16:29:02
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