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I am trying to get a Samsung P2770FH monitor working. The power supply was bad (about 5V output instead of the expected 14V) so I ordered a replacement. Now the monitor powers up, but under certain circumstances it will power off, then back on about every eight seconds. Depending on the signal, sometimes it will stay on longer, but usually power cycles within a minute. Any common things I might want to check before I declare it dead? Thanks!

We ended up replacing one of the circuit boards, but I don’t recall which one. It was something we were able to order.

Was it an original power cable? Generic brands can be very glitchy to keep a monitor powered on. One thing you can check is the voltage if you have a multimeter laying around. Otherwise the bad power supply could have shorten out the monitor as well.