HOW TO REPAIR TV PICTURE TUBE
As with any electronics, a TV is durable and has shelf-life. The heat of the internal components of all electronic components can cause deterioration of the cables and circuits in the equipment over time. Other external factors such as humidity, electricity, and magnetism can also damage these devices. A picture tube or CRT (Cathode Ray Tube) is the device that produces colors for a television with a vacuum tube and an electron gun connected to a fluorescent screen. Over time, these tubes can be destroyed by heat, magnetism and other factors. If you know what to look for, you can troubleshoot your TV to see if the screen is broken. HOW TO IDENTIFY WHEN YOUR TV PICTURE TUBE IS BAD Look for blurry areas on the TV screen when it's on. These may appear as circular bluish-green spots or as a large spot. This is a warning that a magnetic disturbance has affected the picture tube. This problem may occur near power cords, a large metal object near the TV, or moving the TV for a lon...