Lite on pa-1650-02 lost on power after short circuit

Welcome.
The power supply has short circuit on a cable, I cut the plug and removed the fault, but now the power supply output voltage is 18.9V on a different measurement is 19V, perhaps because of this laptop (Acer Aspire 5315) is not able to start, only power LED will blink(without battery), with a battery (when charged) laptops start boot. On another power supply (voltage 19.1 V) laptop work normally. Transistors tested and working well but I'm not sure about K3569 mosfet transistor, capacitors looking good. Maybe one of these miniature SMD capacitors causing a problem or what?

I tested output with diode test on mulrimeter when disconnected from the grid,
when black probe (-) and red (+) the multi indicates 189, when black probe (+) and red (-) the multi indicates a short blink 1300 or 1900 and at the end 1(infinity).

It looks if adapter lost the power. So still can it be some short circuit? How to solve this problem?

Try to connect a load and see power-supply delivers the voltage and ampere as rated.

Powe supply delivers 19 V and 39,5mA when only connect to laptop, pressing the power button causes a brief spike current consumption so that I can’t see the value and at that moment one of the elements begins quietly whimpered until unplugged.

Can you find another powersupply? That way you will know whether the problem is in power-supply or computer.

HardLed said:

Powe supply delivers 19 V and 39,5mA when only connect to laptop, pressing the power button causes a brief spike current consumption so that I can’t see the value and at that moment one of the elements begins quietly whimpered until unplugged.

Click to expand...