My landscape monitor, a six-year-old Dell U2711, died after a few days of flickering and failure-to-start. As you’d expect with any old electronics, particularly from Dell, it’s the electrolytic caps:
All of the black-cased caps on the board had bulged cases:
They’re (allegedly) made by FOAI, for whatever that’s worth.
They’re not really capacitors any more:
I replaced all of them with cheap eBay caps to no avail. Spot-checking the other (“brown”) caps on the logic board showed they were still good, but the power supply board is firmly glued in place and I can’t get to the HV cap.
A new monitor arrived two days later and it’s all good again.