The LCD TV picture tube is broken.

1, service life is too long. The service life of LCD TV picture tube is about 3 years. Aging will occur after more than 3 years, and the lamp will be damaged. This is normal. 2. LCD TV picture tube is in self-protection state for a long time, which will automatically cut off the power supply, which may lead to the damage of the picture tube due to too long time. Suggested solution: 1. At present, the general maintenance department does not have the technology to replace the backlight tube, so if a lamp is broken, the overall brightness of the TV can be increased. Because of the backlight board, when the brightness is high, it can cover up the influence of a small number of lamps damaged. Basically, it is imperceptible, but if it is much worse, the manufacturer needs to carry out special maintenance. 2. After the LCD TV picture tube reaches its service life, contact the relevant manufacturers as soon as possible, ask whether the manufacturers have picture tubes of the same specifications and book them in advance, and book the time for home replacement in advance. 3. Sometimes, because the weather is cold or the machine is not turned on for a long time, there may be a phenomenon similar to the damage of LCD TV picture tubes. The reason at this time is that a backlight lamp starts slowly, and the system will cut off its power supply for self-protection, so there is a phenomenon of black screen in a certain area. At this time, you can turn it on several times to solve it.