Have a VO370M, and after turning on, after a few minutes, the back light is flickering in intensity... not on/off, but like bright/dim. From what I can tell, there is a power/inverter board, and a main board.... I am assuming that since the colors and everything is fine, and all of the inputs are affected, that it would be the power/inverter board that needs replacing... is my guess correct?
Unless you have your engine running power inverters will drain the battery in my experience. I have only used the Bestek 300w power inverter that plug into the cigarette lighter charge outlet but know of people who have the larger (up to 1000w) hooked direct to the battery.To choose the watt is only depend on your need. So before buying an inverter, you can compare more detail data between different watt. Or you can get this information on here. http://www.bestekmall.com