Dead 31MU97-B monitor, power board OK.
I switched my 31" LG 31MU97-B off at the wall power socket and when I switched it on again a few hours later it was dead. So, untouched between switching off and switching on.
Dead means absolutely dead – no power light, no sound to indicate it has switched on, no message about powering off in a few seconds to save energy, no sign of a backlight.
I have taken it to a PC repair shop and to an electronics company that deals with monitors (but more usually the industrial type) and both say no blown fuses, no bulging capacitors and that the power board is OK. The latter thinks the display panel itself is probably OK.
Since there is no power light, which is presumably low voltage, I'm thinking this must mean something is causing the power board to trip or shut down (almost instantly). Is it (almost) inevitably the mainboard or has someone any other suggestions? Would I be right to think the power board is capable of shutting down when feeding into a short or too high a load or demand from the mainboard?