I've been having issues for the last year or so with these monitors failing.
Seems they all mostly share a common failure mode, had one with a bad LCD driver chip. The others have it where LED blinks blue and they either flicker the backlight or just stay dark with no image. The menu will not show and it will not display anything but the computer detects the monitor. I've found in almost every one of these they have failed because of bad capacitors. Here's the steps I have taken to repair probably 50 of the monitors so far with nearly 100% success.
!!WARNING!! Before starting be sure the board is de-energized and the capacitors are discharged. If you are unsure of how to do that please do not attempt this repair or repair at your own risk. The capacitors on the board can hold lethal voltages especially the large one on the bottom left. !!
So far I've found it's mostly the 4 caps on the output rails of the transformer on the psu board that are the cause of the failure.
The ones in that picture have failed and are bulging
Use a spudger around the seam on the bezel to get the front and back separated from each other.
I've found it's easier to start at the bottom near where the stand screws into and then work around the edge from there.
Because it has a bit of a wider gap it's easier to start and, it'll be hidden after install if it does get marred.
This is the rear cover details.
This is the front cover details.
Then there's a metal cage housing the logic and psu boards that you can unscrew.
This image shows the circuit housing with the PSU board removed from the left
To make it easy just add a bit of new solder to the joint and then just pull the four old caps out or use a desoldering pump or wick. Afterwards you can solder new ones in and reassemble. Get a bag of 1000uF 25V caps from amazon or your favorite vender to replace the old caps. I've found the monitors come with either 16v 1000uF caps or 25v 820uF which are mixed and matched and that 25v 1000uF work fine for replacements for all four caps.
!!WARNING!! Before starting be sure the board is de-energized and the capacitors are discharged. If you are unsure of how to do that please do not attempt this repair or repair at your own risk. The capacitors on the board can hold lethal voltages especially the large one on the bottom left. !!
So far I've found it's mostly the 4 caps on the output rails of the transformer on the psu board that are the cause of the failure.
Use a spudger around the seam on the bezel to get the front and back separated from each other.
I've found it's easier to start at the bottom near where the stand screws into and then work around the edge from there.
Because it has a bit of a wider gap it's easier to start and, it'll be hidden after install if it does get marred.
Then there's a metal cage housing the logic and psu boards that you can unscrew.
To make it easy just add a bit of new solder to the joint and then just pull the four old caps out or use a desoldering pump or wick. Afterwards you can solder new ones in and reassemble. Get a bag of 1000uF 25V caps from amazon or your favorite vender to replace the old caps. I've found the monitors come with either 16v 1000uF caps or 25v 820uF which are mixed and matched and that 25v 1000uF work fine for replacements for all four caps.