So guess the problem is because of Main Chip defective and causing Normally,Īfter that, concentrate to tracing to this key control line circuit through the Main Chip (CPU) But found that front panel board circuit KEY1 and KEY2 has one channel is nearly 0 volt. Check the Mainboard standby voltage has 3.3v, DDR hasġ.5V, Kernel core power voltage has 1.2V and reset circuit has 3.3V, so all these voltage values in goodĬondition. So suspect the problem is in TV Mainboard. Their BK_ON and DIM signals is active low (nearly 0 zero volt), also the T-con Vcc input 0 volt The PSU output voltages all normal, input signal voltage, PSON is active high (3V) but This TV mainboard part number is SZTHTFTV1906 V3.2. But the TV front panel and remote control all can’t The power LED light is lit in blue color. TV Model: Tsinghua Tongfang (THTF) LED-32TX2000 LED TV Home RT809 Service Menu TV Service Menu Dell TV LG TV Panasonic TV Samsung TV Sony TV Articles Download Page Iphone-crt_tv-refrigerator-load_washer-training iPhone-Ipad-Mini-Air-Conditioner-CRT iPad2_Xbox 360_DVD Recorder_Electric Dryer_Microwave Oven-training Recommend Contact Us LED TV Stuck on Start-up and No Display Problem
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