In normal use of the TV, there is generally no problem, but the TV will inevitably be faulty for a long time, many people are helpless in the face of TV failure, then what are the common faults of the TV? What should I do if the TV fails ? Let's take a look at the decoration home decoration network Xiaobian.
What should I do if the TV fails?
TV common fault 1, no signal:
TV troubleshooting method: This fault is divided into two cases. There is no input signal after the first power-on; Inspection method: (1) When there is no input signal, check whether the signal cable connection is normal; check whether the main board is input from the field to the inverter output and then to the main chip part of the circuit for the presence of no solder/short circuit; Is the point voltage normal? (2) When the display exceeds the display, check whether the computer input signal is out of range; check the voltage of each working point of the motherboard.
TV common fault 2, the screen flashes:
TV troubleshooting method: When this fault occurs, use the automatic or manual adjustment "phase" can be adjusted; check the voltage of each working point of the motherboard is normal; check the phase-locked loop capacitance, resistance has no value; check the motherboard by line Field input to the inverter output and then to the chip part of the circuit for virtual soldering, short circuit phenomenon.
TV common fault 3, no characters:
TV troubleshooting method: When there is no character failure, it should be tested whether the power supply from the motherboard to the logic board is normal; check whether the logic board itself is bad; check whether the LCD screen itself is faulty; check whether the main fault is faulty.
TV common faults 4, ghosting:
TV problem solving method: When a ghosting fault occurs, check whether the input signal is normal; check whether the signal cable is out of specification; check whether the motherboard vga seat has any virtual soldering or short circuit; check whether the main board is input from the signal to the chip. Welding, short circuit phenomenon; check the main chip for faults.
TV common faults 5, Huaping:
TV troubleshooting method: When there is a flower screen failure, it is necessary to measure whether the motherboard clock output is normal; check whether the motherboard signal rgb is from the input to the main chip part of the circuit, whether there is a virtual soldering/short circuit phenomenon, whether the capacitor or the resistor has a variable value; check the motherboard signal output. There is no solder/short circuit in the circuit of the connector to the screen.
TV common faults 6, color cast:
TV problem solving method: When a color cast fault occurs, check whether the main board signal rgb is input to the main chip part of the circuit for the presence of no solder/short circuit, whether the capacitor or the resistor has a variable value; enter the factory mode, perform white balance adjustment, can Recall the normal color; replace the mcu if necessary or re-burn the mcu; check if the vga signal line is bad.
The above are the common faults of TV sets brought to you by Xiaobian? What should I do if the TV fails? I believe that everyone has a basic understanding of common TV faults after reading this article. If you want to know more about decoration consultation, please click to enter the decoration knowledge channel.
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