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Re: QMX+ High Current and Self Start


 

When I apply power, the input voltage stays at 12v for a second during boot up and then it latches. I’m under the impression a transistor is switching on and dumping current OR this has to do with the 5v SMPS startup voltage ramp hand-off from the 3.3v board.?

If this is true, does this sound like a bad shorted cap??

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