Black Screen FIXED! Sony Bravia KD-55X8500F LED Backlight Replacement Guide
Is your Sony KD-55X8500F completely dead? If your TV is showing a common Red Blinking Light Error or simply Won't Turn On, the issue is likely rooted in the main board or power supply unit. In this advanced repair tutorial, Magiccare Electronics walks you through the precise steps for fixing the elusive "No Power" fault on the Sony Bravia KD-55X8500F 4K model. This is not a simple board swap—we dive deep into component-level main board repair, demonstrating how to: Accurately diagnose the source of the power failure. Check for specific short circuits and component failures on the main board. Perform advanced component replacement to restore full functionality and eliminate the red blinking light error code. This video is an essential guide for electronics repair technicians looking for detailed diagnostics and component-level solutions for the KD-55X8500F. 🛠️ Full Repair Timeline & Chapters Video Timestamps for Sony KD-55X8500F Repair 0:00 - Introduction: KD-55X8500F "No Indicator Light" & Dead Status 0:35 - Initial Main Board Disassembly: Removing Heatsinks for Processor and ICs 1:08 - Step 1: Standby Voltage Test and Diagnosing the Missing 3.3V/3.5V Supply 1:39 - Short Circuit Identification on the 3.5V Line (Diode Test) 2:39 - Replacing the Shorted Diode/Rectifier on the Power Supply 3:05 - Voltage Confirmation: Verifying 3.5V and 3.3V After Diode Replacement 3:26 - Problem Still Present: TV Indicator Still Off - Moving to Advanced Repair 3:41 - Testing Secondary Power Rails (RAM and Processor 1V) 4:00 - Hypothesis: Processor Reballing Required for Full Repair 4:30 - Using the BGA Rework Station: Setup and Temperature Profile 5:56 - Processor Reballing Process (MT5832 IC) 7:41 - First Power Test After Processor Reballing 8:00 - Success! Sony & Android Logo Display and White Indicator Light 8:32 - Testing Remote Control Functionality (Volume Check) 8:53 - Final Assembly: Applying Thermal Compound and Re-installing Heatsinks 9:39 - Final Power-On and Heating Check 10:03 - Full TV Functionality Confirmed (Picture & Sound) 10:37 - Conclusion and Ready for Dispatch 👇Good News All my Subscriber Training is Started 👉Ahmedabad- 2nd March 2026👈 🏛 Location: https://share.google/JSwHsgRkX4mk7m05r 👉Kolkata- 20 February 2026👈 Call 9601991652 for Seat Booking Playlist👌👇 👉 • Magiccare Electronics 👉 • Vinod Kenny Playlist Subscribe to Magiccare Electronics for more professional electronics repair and advanced troubleshooting guides! #SonyTVRepair #KD55X8500F #NoPowerFix #RedBlinkingLight #MainBoardRepair #AdvancedDiagnostics #SonyBraviaRepair KD-55X8500F troubleshooting Sony LED TV Won't Turn On TV Component Repair MagiccareElectronics
