Sony KDL-43W800F Stuck on Logo Repair | EMMC IC Change & Processor Reflow

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👉Sony KDL-43W800F EMMC & Processor Repair | Magiccare Electronics

In this comprehensive technical tutorial, we diagnose and repair a Sony Android TV (Model: KDL-43W800F) that is stuck on the Sony logo. This video walks you through a multi-step professional repair process, including advanced troubleshooting and specialized machinery.

Key highlights of this repair include:

Initial Diagnosis: Testing all essential voltage lines (3.3V, 1.5V, 5V, 1.8V, and 12V) and identifying a drop in the 1.0V processor line.
Voltage Correction: Testing with an external regulator to see if the voltage drop is the primary cause.
EMMC Replacement: Removing the original SK Hynix EMMC IC, checking its health (30-40% life remaining), and replacing it with a new Samsung IC.
RPMB & Programming: Cleaning the RPMB counter, writing Boot1, Boot2, CSD, and User Data partitions.
Processor Reflow: Using a BGA machine to reflow the processor after finding dried thermal paste and persistent restarting issues.
Final Testing: Successful Android logo boot, application loading, and final testing on the original panel.
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Timestamps
0:00 - Introduction & Model Identification (Sony KDL-43W800F)
0:30 - Detailed Voltage Checks (Processor & EMMC lines)
1:10 - Testing with External Voltage Regulator (1.0V line)
2:15 - EMMC IC Removal & Health Check
3:08 - Preparing New Samsung EMMC & RPMB Cleaning
4:16 - Data Programming (Boot & User Area partitions)
5:10 - Testing after EMMC Change (Sony & Android Logo)
5:35 - Diagnosing Processor Overheating & Dried Paste
6:10 - Diode Test Reading (Processor Core Supply)
6:38 - Professional BGA Reflow Process & Profiles
9:15 - Testing Processor Balls & Cooling Phase
10:10 - Verifying Readings after Reflow
10:50 - Successful Boot & System Reset
12:20 - Final YouTube Playback & Stability Test
13:10 - Outro & Final Result on Original TV
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