ASUS PG27V No Power, blown part help to identify

[Fr3shGy]

Hi,

My ASUS PG27V monitor died a couple of days ago. No LED no power at all.
It has an external 19V power supply.

I took it apart and it looks like there is a MOSFET SOT23? / Diode? blown. The board is a 4H.3Q601.A00.

Below the blown part, there is the same or similar Mosfet with the lable "57199", but i can't find a datasheet to see if it is a shottky diode or an N-channel Mosfet.

I need help to identify or figure out what part i can replace it with. I have some SOT23 Fets laying around.

[R_J]

Re: ASUS PG27V No Power, blown part help to identify

I suspect it is a LDO not a mosfet, Are you sure about the other number 57199?

[Fr3shGy]

Re: ASUS PG27V No Power, blown part help to identify

Thank you for helping. I took a picture of the LDO its either 57199 or S7199.

I looked at the blown LOD and yes you are right it seems like this one has a diffrent number on it ... it says "25A9" or "2549"

Its very hard to see. I can't find any datasheet for either "25A9 or "2549"

[R_J]

Re: ASUS PG27V No Power, blown part help to identify

I can't find the number (it might be custom) but the ldo seems to have a pinout similar to a SY8009

[Fr3shGy]

Re: ASUS PG27V No Power, blown part help to identify

makes perfect sense. basicly i now go ahead and check the Vin voltage and replace it with a similar one.

thank you very much