LCD monitor lacks color

When the LCD is used for a period of time, there is a lack of color, the display effect is very poor.

The main reasons for the lack of color display are the following three kinds:

1. The transistor in the video output circuit is open to a certain level, resulting in a lack of color on the monitor.

2. The video output to the cathode tube, the pin has to be off welding or bad contact.

3. CRT cathode aging.

If the monitor is not used for a long time, you can exclude the last reason. Key to check the video output circuit related components.