Sony klv-40r352E Sound mute
Sony klv-40r352E This set came to the workshop for repair. It had no sound. The picture, etc. were all perfect. When I opened it and started fault finding, the audio IC BD28623MUV was getting VCC 19 voltage The audio source signals were also fine.They were reaching the System IC perfectly. I checked all the parts with the audio amplifier IC.They were fine.When I traced pin number seven of the audio amplifier IC, it was connecting to the system IC with a 100 Ω ohm resistor.This 100 Ω ohm resistor was bad. Pin number seven is the mute point, which the system IC makes high or low. When I changed this resistance, sound came out. My job is don
The system IC drives pin number seven of the audio amplifier IC high and low.
