ASUS PA246 LCD IPS screen no power

[andreash]

Hi,

my ASUS PA246 LCD Screen is no longer powering on. I have removed the Power Supply board and what the main board for testing, but I'm only a novice in this field. I have a digital Multimeter at hand and am fairy confident in replacing components on the PCB.

What I have found out so far:
- measured ~400V on the big 450V capacitor (I am in Germany with 230V mains)
- the capacitor C871 in the middle of the board (left to the bottom end of the big one) was bulged and I replaced it.
- I could identify three fuses on the board, all are fine
- the cable connecting the two boards is carrying 5V on the first pin
- Power LED is not lit
- The power button is working (i.e. makes contact when pressed) and the cable to the PCB is fine, too.

I'm not quite sure where to start from here, but would be happy to learn about this. The screen itself is to good to go to the junkyard.

Any help greatly appreciated!

Regards,
Andreas

[macgar]

Re: ASUS PA246 LCD IPS screen no power

Witaj, trochę czasu już minęło, od czasu publikacji Twojego postu. Chciałem się dowiedzieć czy poradziłeś sobie z tym problemem.

Ja również mam ten sam monitor i ten sam problem.
U mnie na dodatek wypalił się układ IC GMT G5627 N361 na płycie logicznej

Chyba zacznę od wymiany wszystkich kondensatorów elektrolitycznych.

Pozdrawiam

Hello, it's been a while since your post was published. I wanted to know if you dealt with this problem.

I also have the same monitor and the same problem.
In addition, IC GMT G5627 N361 on a logic board burned out

I think I'll start by replacing all the electrolytic capacitors.

Regards

[SMDFlea]

Re: ASUS PA246 LCD IPS screen no power

Please post in english .

[voltman]

Re: ASUS PA246 LCD IPS screen no power

One of the connections on the capacitor C871 you replaced looks kind of dull in your pic. Could it be a cold joint? Much more competent then me will be along but, I would replace all of the capacitors.

[macgar]

Re: ASUS PA246 LCD IPS screen no power

for me the C871 capacitor was damaged and burned on one of two GMT G5627 logic boards. I think it's because of him.

Do you know any replacements for this GMT G5627 system?

[trackersurf]

Re: ASUS PA246 LCD IPS screen no power

Hello
I'm a bit late on this thread
I have the same problem: my screen just doesn't turn on anymore.
I have checked all three fuses, but they are good.
Indeed, the capacitor C871 seems swollen ....
Have you managed to resuscitate your screens?

[trackersurf]

Re: ASUS PA246 LCD IPS screen no power

I have just finished the disassembly and I also notice that one of the two IC GMT G5627 N361 has burned out !!!