HP 15-cs3054nl no charging and not work in dc (Main DAG7BLMB8D0 REV : D )

Good day forums. I get this HP laptop with the defect that the backlight on the screen started to flicker quickly. After a few reboots the fault seemed to have disappeared and then returned. I updated the bios, graphics drivers but nothing. I disassembled the screen and cleaned the LVDS cable both on the lcd side and on the mainboard side. The defect seems to have disappeared but I noticed that the battery is not being charged, the word charging remains but the percentage does not rise, on the contrary, if I unplug the dc connector the battery runs out. I disassembled the mainboard and noticed a burnt diode, in the photo. I replaced it taking it from a similar board ( DAG7BFMB8DO REV ) even if it was rotated 180° on the similar board. I mount the new diode but it does not solve the problem, I also noticed that the motherboard does not always detect the inserted power supply, in fact in the first mosfet I find the voltage of 19V on pins 5,6,7,8 but on the source 0V, in the pin 4 (gate) there is no piloting. Sometimes, however, after a while, the orange charging LED lights up but obviously it doesn't charge.
I measured the voltages on the Charger ISL88739 ic with the battery and power supply connected without the orange led on.
PIN 1 2,29V
PIN 2 0,09 V
PIN 3 3,14V
PIN 4 3,14V
PIN 5 0V
PIN 6 0V
PIN 7 0V
PIN 8 0V
PIN 9 0V
PIN 10 0V
PIN 11 5,14 with oscillation
PIN 12 0V
PIN 13 0V
PIN 14 11,33v
PIN 15 11,33V
PIN 16 1,30V WITH OSCILLATION
PIN 17 0V
PIN 18 11V
PIN 19 5,24 V
PIN 20 5,24V
PIN 21 0V
PIN 22 11,3V
PIN 23 11,3V
PIN 24 11V
PIN 25 16V
PIN 26 11,3V
PIN 27 6,7V
PIN 28 1,90V
PIN 29 0V
PIN 30 0V
PIN 31 11,34V
PIN 32 11,34V
burned diode photo

P.S. Sorry if I have gone on too long but it was right to explain the whole dynamics of the problem

robgerr napisał(a):PIN 18 11V

Przy podłączonym zasilaczu powinno być * Typical Operating Performance DCIN = 20V” , a wydaje się że jest tylko zasilanie baterii.
Zmierz na samym zasilaczu p18.

Hi ado, very thank's for your reply.
The problem is precisely that the first mosfet is not driven.
I enclose a photo of the situation of the first mosfet and of the second mosfet immediately after the DC connector.
Head made with battery and power supply connected

Witam odłącz zupełnie Baterie i dokonaj pomiarów o które prosiłem.

Pin18 (only ac adapter conencted) 1,87v

Check PD7.

Thanks Machine
replaced PD7 and the DC section seems solved, only the problem of the battery that is not charged remains, connected with a bench power supply I only have an absorption of 20 mAmp

*Founded PQ7 shorted between gate and source, replaced and now charge battery, test in progress