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
https://sites.google.com/view/sonyledtvrepaircenter/home
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Shaukat Ali has over 30 years of experience in LED TV repair, specializing in chip-level repair work. He is an expert in Sony LED TVs, and also repairs other major brands like Samsung, TCL, Orient, and Haier. His expertise includes display panel faults, motherboard issues, power supply circuits, T-Con, and HDMI faults. Based in Lahore, he shares real-time fault finding cases from daily repair work to help technicians and learners with practical experience.
📞 Contact: +92 321 4066054