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Dell U2711 Monitor: FAIL

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:

Dell U2711 Monitor - failed caps
Dell U2711 Monitor – failed caps

All of the black-cased caps on the board had bulged cases:

Dell U2711 Monitor - failed FOAI cap - detail
Dell U2711 Monitor – failed FOAI cap – detail

They’re (allegedly) made by FOAI, for whatever that’s worth.

They’re not really capacitors any more:

Dell U2711 Monitor - 100 uF 5 ohm cap
Dell U2711 Monitor – 100 uF 5 ohm cap

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.

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