Re: Flashing monitor problem
Almost certainly the inverter that powers the backlight, and almost certainly a defective capacitor on the board. I had the same problem with an Elonex.
Options:
1. If you are handy with a soldering iron, you can take the monitor apart , remove the inverter and inspect for any capacitors that have bulges in the case or look suspect, and replace it. It is often the smoothing capacitor on the output that fails, usually 4 of them, so replace all four. About 2 hours work and no more than a couple of puinds for the parts
2. Viewsonics may be made by another mfr and badge engineered. If you can find the OEM (often Mitac) they have a service centre, and if you can get the invertor part no (off the inverter PCB) you can buy a new one. Cost around £30. It may also be contacting viewsonic direct as they may be able to supply - I would expect the price to be the same sort of magnitude. (Mitac were the OEM for my Elonex)
3. Monitors are really cheap now so you might think it not worth £30 or the hassle to repair it, and think that it doesn't owe you anything, so bin it.
Re: Flashing monitor problem