I can't watch TV at home

Answer 1

Home TV failure could be caused by a variety of faults. The following are some common situations and corresponding maintenance methods:
1. * * Power panel malfunction **:
- It was manifested by abnormal sounds and odors in the machine, the screen flashing but not turning on, the indicator light not shining, no sound and image, and the machine automatically turning off and on at random times.
- The repair method was to replace the power board or repair the power board. For example, if the TV turned on and the screen went black, he could change the power supply directly.
2. * * High-voltage board malfunction **:
- The performance was that the backlights did not light up, the LCD screen did not display, the screen was black, and the screen automatically turned black from time to time.
- The maintenance method was to replace the high-voltage board or perform fault maintenance on the high-voltage board.
3. * * Poor connection of the cable **:
- It was a normal sound when the TV was turned on, but the screen was white or there was no response.
- The repair method was to check the TV screen interface cable and plug it in firmly, or replace it with a new cable. For example, if the TV screen had a jump or a blurred screen, the cable on both sides of the logic board could be pulled up and pulled out. If the half of the screen that did not pull out the cable was normal after the TV was turned on, the abnormal half of the screen could be blocked by five to fifteen wires on the left or right side, and then put it back. If the TV screen had a red, green, and blue screen flashing or a black screen after the TV was turned on, the cable could be pulled out, wiped clean below, and then put a little tape on it before putting it back.
4. * * Key Failure **:
- The performance was that the TV could not be switched on or automatically jumped off.
- The repair method was to find the buttons that did not work properly and replace them with new buttons.
5. * * Power Failure **:
- The TV was in a three-no state when it was turned on. There was no power indicator light, no sound, no display, and it could not be turned on.
- The maintenance method was to check if the power cord was energized.
6. * * Setting Failure **:
- The symptoms were that the television could not receive a signal, there was no channel, or the picture was not clear.
- The maintenance method was to press the TV signal source button on the remote control panel when the set-top box was green. A menu would appear, and then the corresponding options would be selected according to the situation of the cable. If there were three cables, choose video. If there was only one cable, choose HD, and click confirm. If the picture was unclear, whether it was normal or blurry depended on whether the resolution setting of the TV was normal. He could find the image or display in the menu to adjust the resolution and thus the clarity of the picture. He could also adjust the color standard, adjust the hue, brightness, contrast, and other parameters to achieve the purpose of obtaining a clearer picture.
7. * * Network Failure **:
- It was manifested by the unclear picture on the television.
- The maintenance method was to check whether the cable cable was plugged in and connected stably. If it was a wireless TV or network streaming service, it was necessary to ensure that the wireless network connection was stable.
8. * * TV aging malfunction **:
- It was manifested by the unclear picture on the television.
- The maintenance method was to repair and replace the aged or damaged LCD panel, backlights, etc.

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