Problems with power on and off
Posted: Sun Feb 16, 2025 11:20 am
If the device does not respond when the power button is turned on, then the problem is most likely with the power supply. It can burn out due to a strong voltage surge, despite the fact that modern models are equipped with protection levels.
Symptoms of a faulty power supply: the TV does not turn on at all, turns off spontaneously after a while, the power button constantly blinks, the indicator lights up and immediately goes out.
The reason may be in the motherboard, on which microcracks may appear precisely because of a voltage surge. More precisely, they will tell you in the service center, where they will conduct a full diagnostics.
Matrix failure
A more complex problem is a breakdown of the matrix or related usa telegram data electronic elements. Replacing it in case of complete inoperability is sometimes impractical due to the high cost comparable in price to a new TV. But some breakdowns such as matrix backlight (inverter) and adjacent components are subject to repair and replacement.
Individual matrix faults
The reasons for the matrix failure may be a blow from a hard object on the screen, moisture ingress or wear due to long-term operation. Perhaps the reason may be a manufacturing defect that appeared after some time.
As a result, colored or black stripes, various distortions, or a complete lack of picture may appear. A specialized repair shop will help to establish the exact cause.
Main reasons for matrix backlight failure
Incorrect operation of the backlight module (converter). You can check it by connecting it to a known good matrix;
Burnout of the matrix lamp. In case of its complete inoperability, it is easily replaced in service conditions. The cause of the breakdown may be a power surge or an initially low-quality part;
Damage to the matrix lamp. Occurs as a result of careless handling of the TV, accidental impact or other physical impacts.In this case, be sure to contact a TV repair service to replace the faulty inverter.
Darkening of the screen and other image distortions. This also indicates a faulty matrix.
Symptoms of a faulty power supply: the TV does not turn on at all, turns off spontaneously after a while, the power button constantly blinks, the indicator lights up and immediately goes out.
The reason may be in the motherboard, on which microcracks may appear precisely because of a voltage surge. More precisely, they will tell you in the service center, where they will conduct a full diagnostics.
Matrix failure
A more complex problem is a breakdown of the matrix or related usa telegram data electronic elements. Replacing it in case of complete inoperability is sometimes impractical due to the high cost comparable in price to a new TV. But some breakdowns such as matrix backlight (inverter) and adjacent components are subject to repair and replacement.
Individual matrix faults
The reasons for the matrix failure may be a blow from a hard object on the screen, moisture ingress or wear due to long-term operation. Perhaps the reason may be a manufacturing defect that appeared after some time.
As a result, colored or black stripes, various distortions, or a complete lack of picture may appear. A specialized repair shop will help to establish the exact cause.
Main reasons for matrix backlight failure
Incorrect operation of the backlight module (converter). You can check it by connecting it to a known good matrix;
Burnout of the matrix lamp. In case of its complete inoperability, it is easily replaced in service conditions. The cause of the breakdown may be a power surge or an initially low-quality part;
Damage to the matrix lamp. Occurs as a result of careless handling of the TV, accidental impact or other physical impacts.In this case, be sure to contact a TV repair service to replace the faulty inverter.
Darkening of the screen and other image distortions. This also indicates a faulty matrix.