Re: Asus x55a no power or bootup
OK, so you are not getting any 5 or 3V SMPS, but are getting the 5VLDO. You have the Vin and EN1 logic high for the 5V o/p. Have you measured the 4 FETs (upper/lower) for shorts? Have you tried supplying power using a benchtop power supply to see any shorts on the B+ rail? Otherwise, I would possibly change the chip.
Hopefully someone else will jump in and give you a better analyses as I'm kinda still "green" in this whole thing.
OK, so you are not getting any 5 or 3V SMPS, but are getting the 5VLDO. You have the Vin and EN1 logic high for the 5V o/p. Have you measured the 4 FETs (upper/lower) for shorts? Have you tried supplying power using a benchtop power supply to see any shorts on the B+ rail? Otherwise, I would possibly change the chip.
Hopefully someone else will jump in and give you a better analyses as I'm kinda still "green" in this whole thing.
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