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Old 04-24-2018, 07:12 AM   #4
Join Date: Jan 2016
City & State: Valbonne, 06
My Country: France
I'm a: Knowledge Seeker
Posts: 1,871
Default Re: Dell U2413 turning off

Try again after disconnecting the USB daughter board.
Also if possible, measure voltage on all pins of the power supply connector while the monitor is off, while it is on, and after it has shut down by itself.

I don't think there is any service manual/schematics available for this one and I don't see any labelling on the power supply connector so you'll have to compare between working and non-working state.
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