So, got an Acer x27P monitor. Today it just turned off while using it.
First thing I checked was the power supply. It is a DELTA: ADP-230EB T (19.5Vdc/230W) power supply. Plugging it in it gives the expected 19.5v. But... if I put a load on it (the monitor itself or even a 100W halogen bulb) the voltage drops to zero until I unplug it and replug it in without a load.
So I thought maybe the power supply is toast. So I hooked up the monitor to my bench power supply, an AX3010DS which gives up to 30v and up to 10A. Set it to constant voltage and 19.5v. Hooked it up to the monitor and turned it on. It instantly changes to constant current, 10.2A and 1.5v. Tried another power supply and got the same.
According to some spects the monitor only needs 68W so the power supply should easily be able to handle it.
So what could all this mean? Maybe the monitor does need the full 11.7A when powering on and the power supply can't handle it? Or maybe the monitor is toast and draws too much current?