Hey all. Sorry if this is the wrong section but I'm not sure where to put it!!

This is part of a HP 6735s motherboard.

VADP reads in at 19v like it should.

I can't find R1302 yet to test +3v.

Basically, ADP_EN# should be reading in at a very low voltage. But it reads in at 19v, instead. Because of this, the laptop stays dead unless ADP_EN# is shorted to ground.

The positive leg of D1010 reads as 8v.

ADP_EN (not ADP_EN#) seems to be reading at 0v, I will double check this later. It may be correct for all I know.

Anyone got any ideas as to why the voltage is staying at 19v?

Cheers!

 

U1024-B is a comparator. Are the voltages around it making sense? Like, is pin 6 at a lower voltage than pin 5?

 

It sure seems to be. I think I found the problem - LIMITsignal is reading at 0v and comes straight from the DC jack. Could my adapter be causing it?