Question Acer XB252Q 240hz flashes then goes blank, what could it be?

Oct 26, 2020
Hello guys, I was wondering if someone here might have an inkling of what has gone wrong with my Acer XB252Q monitor and whether it's worth trying to fix it!

The monitor was working well for 25 months, but then one day a cheap desk-mounted microphone stand fell over and hit the back/top of the monitor. The amount of force wasn't particularly significant, and the monitor stand itself with mic is not particularly heavy. It fell from approx 20cm above the monitor on to the top/back of it. The monitor though seems to totally overreacted, has taken umbrage, and is now extremely disgruntled and uncooperative - ok, ok, i know they're not meant to be hit with microphone stands, but still, i feel a little hard done by :)

What happens is the monitor turns on from cold absolutely fine, you can use it for about 5 minutes, but then it's starts flickering, and then within another minute or two it's flashing like crazy and strange distorted patches briefly flash up on the screen. Shortly after that the display goes black (though the backlight is still on) and that's it. You have to leave it turned off for 2-3 hours before you can repeat the above process (if you turn it on before then it's still blank). During this time the OSD is not useable, and switching cables and ports on the monitor/gpu makes no difference.

I thought perhaps something might have come loose, but the fact it still works for a few minutes from cold makes me think this might not be the case. Maybe it's a dodgy capacitor? Has anyone experienced anything like this? Does anyone have any suggestions where I might start trying to fix it? I guess I could just open it up and inspect all the components, but if it's likely something major I might just sell it for spares + repairs without possibly damaging it further. Any ideas?