Lg4 K monitor not working

Hello

I have had 3 off. Lg MDL 4K monitors the first lasted 2 hours, second lasted 2 week dead screen and dead pixel lines third 5 months monitored just died ,sent to Lg we have not got the part, approx 3 week delivery but if you like we will scrap this off and you can get a replacement from Apple.

No give it a repair 4 weeks later returned plugged in Monitor have a guess the screen flashed up but the Mac Mini was not on?

Shut down Mac Mini and monitor stays powered on.

Sent it back today