klv-48r472b-backlight-blink-repair
Sony KLV-48R472B LED TV was experiencing a backlight blinking issue, where the backlight would turn on and off repeatedly. Occasionally, the TV would display a 6-blink error code.
Fault Finding
1. Opened the TV and checked the backlight, which was found to be in working condition.
2. The fault was identified in the backlight driver circuit.
3. Used a multimeter to check the resistors connected to the driver IC.
4. Found a faulty resistor with a value of 68K ohms, which was causing the backlight blinking issue.
Repair Solution
1. Replaced the faulty 68K ohm resistor with a new one.
2. Verified the backlight functionality after the repair.
Result
The backlight blinking issue was resolved, and the TV is now functioning properly.
Model Details
Model: Sony KLV-48R472B
Issue: Backlight blinking
Cause: Faulty resistor in backlight driver circuit
Solution: Resistor replacement
Result: Successful repair
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