How to solve Tuning Problem in China crt Tv

Asslam o Alaikum.

to day i tell you about " how to solve Tuning Problem in China crt tv"  So first of all unplug your tv from socket and open its back cover then check the 5V of tunner if tunner voltage is weak or zero then check the pcb print or resistance from power supply . else if tunner voltage is ok then follow down steps.


















Step 1
change tunner it is possible fault of tunning from break tunner.

Tunner

Step 2

 change the if coil if tunner is ok.

If Coil

Step 3

Goto tv factory mode then set  VL/VH frequency 64  and  VH/UHF frequency 164 and set the band optin 3 .

Step 4

Check all the prints and voltage around the tunner section. most important fault is  if coil and tunner.