I'm curious, is it just in the PCF office, or is it a trend generally that DVI inputs are a monitor's Achilles' heel? Perhaps we've just been unlucky, but in less than two weeks, two monitors around here have seperately decided that they're only happy with an analogue input.

My suspicion is that in both cases, it's the Extended Display Identification Data (EDID) that's at fault. This is a bit of code in the firmware which feeds back to your graphcis card all the info it needs to know about a monitor: unfortunately, it can be corrupted, and a quick Google for DVI problems suggests it happens quite frequently.

I remember reading an article a while ago which suggested many graphics cards were only just within the DVI spec for important things like voltages and so on, and I wonder if this is still the case (and if I can persuade my publisher to buy expensive kit to test the theory).

Ultimately, though, if it's a freak voltage surge that's frying the EDID in these monitors, some things I've read claim that it's possible to reflash the firmware and repair the monitor to its former glory. Firmware files and methods of said flashing, however, are impossible to come by.

I'll continue to investigate, but if anyone is an LCD technician and wants to pre-empt my call to Samsung, please feel free to mail me.