The screen will occasionally turn red while in use, but it will only be restored after a short period of time.The main display screenWhen you press it, the screen goes black and there is no way to open it. It is white and red, with a heavy flyback line, and it immediately turns off the screen.Square LCD display in its normal stateAlthough LCD display tube failures (such as electrode contact) will result in this failure phenomenon, it is not impossible to repair it-a slight electric shock can be used to rewind severely twisted filament power windings, and occasionally this failure phenomenon may also be caused by a malfunctioning phosphor display tube. As a result of a welding failure, the visible discharge power supply resistance of a specific color electron gun is either open-circuit damaged or has a resistance value that is too high. Additionally, in some cases, there is only a minor amount of inter-electrode leakage, which is usually not a problem and does not necessitate maintenance; however, when the lamp is turned on, there will be an instantaneous color deviation, which will naturally recover after a few seconds.When it comes to irregular color deviation faults, it is usually possible to resolve them by repairing the discharge power supply resistance and peripheral components of the appropriate electron gun.Because of open circuit damage to the power supply resistance, the fault phenomenon caused by this damage is the same as that caused by damage to the contact pole. The full screen is brought back to sweep the line, and a specific color is extremely bright, but this will not cause the protection to be turned off or otherwise compromised. The solution is straightforward: simply replace the new resistor with one that has the same resistance value as the old one. Of course, if the resistance increases in size, it will need to be updated as well.I'm not sure if it's due to a design habit or for some other reason. Green has the highest likelihood of failure, followed by blue, and then red.If the display has been in use for more than five years, we can classify the problem as a color deviation failure caused by the aging of the electron gun in the liquid crystal display.