Sony klv32r422 volume control issue
“It seems there was a volume control issue with the Sony keyboard. When I checked the set, I found that there was a voltage divider at the keyboard point 1 with two resistors a 33k ohm resistor connected to the ground and a 12k ohm resistor connected to 3.3 volts. When I opened and checked these resistors, I found that the 12k ohm resistor had increased to 470k ohms, causing the voltage on the key 1 track to drop, which led to the volume increasing automatically. After changing the 12k ohm resistor, the fault was fixed.”
Expert Sony led_ST5461D12-2 Panel fault
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