Failure of LED Backlights

My monitor's screen still shows a faint image when viewed at an angle or with a bright flashlight, but the display remains completely dark during normal use, indicating the LED backlight has failed while the LCD panel itself is still functional. I have already tried reseating the video cables, testing the monitor on another computer, and adjusting the brightness settings in the monitor's OSD menu, but none of these steps have restored the backlight, so I'm hoping someone here can suggest a potential fix or confirm whether this is a known issue with this particular model.