How To Repair Hisense LCD TV With Auto Change Channel
Model : Hisense TLM26V68 LCD TV
The complaint of this Television was TV channel will automatically change. During initial observation, the television sound and display were
normal. The problem only occurs while watching television programs. First suspect was the remote control or
the push button front panel controls. Removed the remote control
batteries the problem still remains. Disconnected the CN8
connector (control panel pcb board of the tv) still with the same problem.
Have tried to replace
the crystal of main chip, but the problem remain the same. After that, checked the supply voltage to main chip,
3.3V_MST line was getting 3.7V instead of 3.3 volt. So suspect the U2 3.3V SMD voltage regulator IC have
problem. After replaced the U2 IC, the TV was back to normal!
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