1. Cause:

- The demagnetizing parts of the TV have been damaged due to long-term use. Or not being maintained, cleaned, or serviced regularly.
- The connection heads such as VGA, HDMI cables... are loose, not firmly plugged in.
- The software version of the digital receiver is too old, causing poor transmission and reception capabilities, resulting in poor image quality.
- Due to conflicts between TV waves and other electronic wave signals that are not good
- Due to objective factors such as stormy weather. Or due to a damp house, the signal transmission line is also damp
- Affected by unstable transmission signals.

2. Instructions on how to fix and repair a blurry TV at home:

First, turn off the TV screen, turn off the power and unplug all surrounding TV accessories including: the power source connecting the TV to peripheral devices such as satellite or cable receivers. Turn on the device a few minutes later. Your TV screen may no longer be blurry.

Check all TV channels to see if the screen is blurred on only one channel or all channels. If the screen is blurred on only one channel, it is the fault of the TV station. If the fault is the TV station, contact the TV station for support. If the screen is blurred on all channels, it may be due to a damaged TV hardware. At this time, you need to call a professional technician to repair it.

Or you can fix the TV hardware error yourself as follows:

In case your family buys and uses electronic - digital devices: satellite reception or cable TV, check the coaxial cables located behind the screen. The cause of the blurred screen may be due to a loose cable head. At that time, you just need to gently shake the cable head connected to the screen at the ANT IN port. Then observe the top of the screen again. If the screen changes, tighten the connecting cable head.
In case the radio is affected by a magnetic field or is affected by other wave sources. You should move the TV to another location. Stay away from phones, computers, induction cookers, microwave ovens, etc. This is also a way to help significantly increase the life of your TV.