The most common causes of malfunctions

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Is it possible to repair a broken screen with your own hands? Why is there sound but no image? How to fix the backlight yourself?
Televisions have long and firmly taken their place in the everyday life of every modern person, so a breakdown of a TV receiver can thoroughly spoil the mood of any of its owners, especially since new units are not cheap. That is why, in the event of a malfunction, each person faces the question - is it necessary to go to a service center and where to find a good technician, is it worth spending your time and, most importantly, money on repairs. Of course, these are important questions, but before turning to paid specialists, try to determine the cause of the breakdown and, if possible, fix it - in some cases, electrical equipment repair at home is possible.

Common faults
In order to perform independent repairs of TV receivers, it is necessary to determine the root cause of the breakdown.

To do this you will need:
multimeter - this device is necessary for determining the voltage uk telegram data parameters in the control measurement areas, the ratings of capacitors and resistors, as well as for testing electrical circuits;
amplifier – used to identify the area where the signal is lost;
oscilloscope – required to represent signals at several points of the functional diagram of the TV device.

The receiver does not start - the cause is usually a failure of the power supply, as well as damage to the cable or a broken power button.
The screen does not light up or the video sequence looks blurry, barely noticeable - this directly indicates problems with the backlight LEDs, bulbs or their power sources.
The TV wheezes or there is no sound at all - in this case, there are most likely interruptions in the operation of the audio amplifier or harness.