TCL-L32S5200 No Sound
I got a tcl-L32S5200 set, there was no sound in this set, picture and all other functions were working fine, it had audio amplifier ic number AD82587D installed, this IC is digital, I checked the supply of IC, vcc 12 volts and 3.2 volts were coming. I checked the signals going to the system and they were also fine. Now I looked at the clock data according to the circuit and then the pin number of the IC is 5 SDA. There was SCL on pin number 6 but there were no volts when I checked the voltage here. In this model, the ir sensor is installed near the audio IC. To support this sensor, the company has installed a rubber band. If we traced the clock data, then both tracks were going under the rubber band. If there was a check, both resistances were showing 1.5 mega ohme devalue, this resistance was 4.7K which supplies clock data from 3.3 volts. It was actually a design fault as the rubber-like gum spoiled the resistance. I am sharing all the information in the post, see the photos carefully. After installing the 4.7K resistor, the sound started and my job was done
My TCL board no sound problem not solve. I am check every resistance SDA SCL & near ir resistance 4.7k perfect vellu. pls. Help
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