Dell P2419H - Flashing on/off

[tmcw]

This monitor was thrown out by the IT department today, when plugged in, the backlight just flashes on/off/on/off/etc., maybe 3 flashes on every 2 seconds. Plugging in a VGA cable makes no difference.

I haven't opened it up yet, but just wondering if this issue has cropped up on Dell monitors of similar vintage (manufacture date of June 2020). Surprised to find one so new out already.

[momaka]

Re: Dell P2419H - Flashing on/off

No idea if this is a known issue or not, but more than likely, you will have to open the monitor to check it out further... and maybe post a picture while you're at it too.

My first suggestion is to check if the power supply voltages (particularly the standby supply, if one) is stable or if it "resets" with the frequency of the backlights flashing. That might help us rule out if it's a PSU issue or a backlight/inverter issue.