Acer Monitor KA252Q suddenly died. No standby LED, adapter tested OK. Repair or replace?

Hi everyone,

My Acer Monitor KA252Q suddenly stopped turning on.

It first started randomly shutting off while I was using it. Unplugging and plugging the power adapter back in would make it work again. This happened several times over the past few weeks.

Last night, after I finished using it, I unplugged it as usual. When I plugged it back in, it was completely dead. The standby LED no longer lights up at all.

I already tried a power reset and had the original 12V 2A adapter tested with a multimeter. The adapter is outputting the correct voltage.

Does this sound like a blown fuse, bad power board, failed power IC, DC input issue, or something else?