In humid weather, the LCD screen goes black and the power light goes out.

The inside of the monitor is wet. There is a lot of water vapor, causing a short circuit. Use a hair dryer to adjust the temperature to medium and blow upward toward the mesh hole at the back and bottom of the monitor. For about a minute, blow out the water vapor and wait for the monitor to cool down. Then plug in the monitor power and try. If you use high temperature to blow, blow for a few seconds and then stop to cool down the monitor to prevent it from melting at high temperature. It's been very humid these past few days, and my console sometimes doesn't respond when I turn it on. I used a hair dryer to dry the inside of the console and it turned on normally.