Newly purchased televisions usually do not have problems, but it may take too long. Although they are now largely well served after the sale, it is also necessary to maintain some of the frequent failures of television, so what if the television is broken? It's about the repair of the television failure。
I. No signal
1. If there is no input signal, check first the signal cable connection, check whether the main panel is normal by entering it from the field to the reverse camera output and then the main chip is partially welded or short-circuited。
2. If the display is exceeded, check whether the computer input signal is out of range before checking the voltage of the main plate at the work point。
Image flash
When the image flashes, adjust the phase, then check the normal voltage of the main plate at each of the work points, check the locking back circuits, resistance changes, and then check whether the main plate is welded or short-circuited from the field to the reverse phase output and then to the chip part of the circuit。
Iii. Colour bias
In case of colour bias, check whether the main plate signal ragb enters into the main chip part of the circuits with welding or short circuits, whether the capacitation, resistance is variable, enters the plant mode, then adjusts the white balance and is able to remove the normal colour。
Iv. Screen
When the screen appears, it is necessary to measure the normality of the main panel clock output, to check whether the main plate signal is welded or short-circuited from the feed to the main chip part of the circuit, whether there is a variation of the electrical capacity, resistance or not, and to check whether the mainboard signal is welded or short-circuited from the main panel to the connected part of the screen。
V. Revision
In the event of a reflection, first, check whether the input signal is normal, whether the signal cable does not conform to specifications, whether the main plate vga is welded or short-circuited, then check whether the main plate is welded or short-circuited from the signal to a part of the chip, and whether the main chip is faulty。
Vi. No character
When there is no character, check whether the main plate to the logical plate is powered properly, check whether the logical plate itself is good, check if the liquid crystal screen itself is faulty, and check if the main chip is faulty。
The above is a description of what to do with the breakdown of the television set, and it is hoped that it will help you to put up a network, a major renovation platform and a leadership brand. If you want to retrofit the design, you are advised to apply for a web-enabled design service。
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