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Re: Qmx plus rev 2 not powering up


 

Hi Ludwig?
I have been following that sequence despite talking about Qmx and not Qmx+ with embedded sources for 3 and 5v.?
The voltage out on the mosfet I meant is the drain voltage on both of them. Meaning the q101 opens and feeds the gate of q102 with the 5v from its drain. Than q102 opens and at it’s drain I have arround 12v.?
For me the lin-reg-en voltage is not so relevant since I have passed that point.?
following the voltage path I should have the 12v on the vin of IC101 but nothing arrives there, all this when the button is pressed. So it never start to generate the 3v the stm never starts.?
I will have to feed the Ic101 manually directly on vi with 12v and see if the system starts and keeps operating, but not done yet.

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