DELL P2217H power issue

[Sraros]

Hello,
I have two identical Dell monitors P2217H that don't power on. I took the PSU and mainboards out and connected them on another monitor. Connecting just the PSUs on the third monitor (with similar mainboard) and the monitor worked fine. So both have an issue on the mainboards.
It seems the 19V rails on both mainboards have a short. Pins 5-6 are the 19V rail, 3-4 is ground, 1-2 is DIM and PWN_ON/OFF
I circled the caps in green where the short appears. It would be helpful if someone can indicate a suspect or a way to figure it out.

[Sraros]

Update
I removed the caps to elimilate at least this one and found a short cap pointed with the red arrow.
Now the screen powers on, I have the Dell logo for half a second displayed but then the LEDS shut off. I still have power on the monitor though and I can switch on and off the monitor.

[CapLeaker]

Depending what tools you got on hand. My first go to would be to inject power into the shorted voltage rail with a CV/CC bench PSU. Feed power and see what gets warm by dousing 99% IPA on suspects and see which one bubbles.
Other method is something that can measure minuscule amount of resistance like a micro ohm meter or Leakseeker89.
Third option is to depopulate the board until the short is gone.

[Sraros]

Thank you for the suggestions. I think your message came right on the same time when I removed the shorted cap.
So, after removing the shorted cap. The mainboard worked as I said previously by swapping it to a similar Dell monitor.

Then regarding the LEDs: I changed the BL managing chip with another one I had available, MP3375. This chip needs at R864 a 0 Ohm resistor and now the monitor works just fine!

[CapLeaker]

Perfect! Another one saved from the bin!