TCL-L32S5200 No Sound

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.ywAAAAAAQABAAACAUwAOw== 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

a close up of a circuit board
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2 thoughts on “TCL-L32S5200 No Sound”

  1. Muhammad Shahabuddin

    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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