SONY SVF15216EW nie uruchamia się.

Measure the voltage at the end of test wires (where they are soldered to the board) in this case.

Check, which component on the board gets hot during the test.

tomi0022 ha scritto:Nagrzewa się układ o symbolu PC105 ( oznaczeniu PJ2D7 SV 1040 )

This component is actually PD23 (it is diode SV1040), but this diode is probably not damaged.
Perform the test at 19V/2A again, this time connect the + of the power supply to any pin of shunt resistor PR162. Check, which component heats up in this case.

Transistor PQ38 is most likely damaged. Replace both transistors - PQ38 and PQ39 no matter, if one seems good.
Transistors are probably as follows:
PQ38= TPCA8064-H
PQ39= AON6502

After replacing both transistors, measure the resistance to ground on pin 4 of both transistors. If both resistances are high (in kΩ range), test the board.

tomi0022 ha scritto:PQ38 72,5 OHM
PQ39 brak rezystancji

Are these resistances measured on pin 4 of each transistor in reference to ground?
If so, the chip PU5 (ISL95837HRZ) is also damaged and needs to be replaced.

tomi0022 ha scritto:Wymieniłem PU5 i niestety nie ma nadal rezystancji na pinie 4 PQ39 .

It is as it should be.
The problem was low resistance on pin 4 of PQ38.

Remeasure the resistance to ground on pin 4 of transistor PQ38.

tomi0022 ha scritto:rezystancja na PQ38 wynosi 74 Ohm

Remove the transistor PQ38 from the board and remeasure this resistance.

Check the transistor PQ38 out of the board. If the resistance between pins 1 and 4 of this transistor is around 70Ω, this transistor is damaged and needs to be replaced.