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
