Table of Contents
How to Use This Repair Guide . ............................................................... 10
How to Modify and Upgrade LCD TV to LED Backlight with
Step-by-Step . ................................................................................................. 11
Parts and Tools ............................................................................................................ 12
Learn How to Modify & Upgrade LCD TV to LED Backlight . ......... 17
How to Connect from 4 x LED Strips to 6 x LED Strips . ....................... 40
How to Programming the LED/LCD TV Mainboard Correctly .. 47
3 Types of Programming Methods for LED/LCD TV Mainboard . ... 48
How to Programming the LED/LCD TV Mainboard . ............................ 51
How to Programming the Universal TV Mainboard . ............................... 54
Where to Find or Get the TV Firmware . ........................................................ 55
A Superb Secret Revealed on How to Repair LCD/LED TV
Mainboard . ..................................................................................................... 56
What’s the Benefit of This TV Start-Up Log Help to Repairer . ......... 57
How to Operate the TV Start-Up Log . ............................................................. 57
How to Read the TV Start-Up Log . .................................................................... 66
New PSU Self Test Method for Modern TV Power Supply . .......... 72
How to Build A PSU Self Test 3V-JIG . ............................................................ 72
Using the 3V-JIG for Testing the Power Supply (Test 1 of 2) . ............. 76
Using the 3V-JIG for Testing the Backlight (Test 2 of 2) . ..................... 78
Using the 3V-JIG for Troubleshooting Backlight . ..................................... 79
Secret Revealed on How to Fast Check the Bad LED Light Bulb
in LED TV Backlight . ................................................................................. 81
Process to Troubleshooting and Repairing LED TV Backlight &
LED Strip . ...................................................................................................... 83
How to Remove the LED Light Bulb from LED Strip Easily . ...... 89
LCD/LED TV Power Supply Repair Tips . ......................................... 95
LCD & LED TV Repair Tips . ............................................................... 100
BONUS-A: LG LED/LCD TV Interconnect Schematic Diagrams
29LN4510-Interconnect_2013................................117
42LB5800-Interconnect_2014................................119
42LN5300-Interconnect_2013................................124
47LB6000-Interconnect_2014................................132
47LN5750-Interconnect_2013................................139
49LF5500-Interconnect_2015................................147
49UB8500-Interconnect_2014................................155
50LB6500-Interconnect_2014................................168
55EA9800-Interconnect-OLED_2013.......................177
55LA8600-Interconnect_2013................................184
55LA9700-UHD_Interconnect_2013.........................193
55LB7200-Interconnect_2014................................202
BONUS-A: T-Con Board Schematic/Circuit Diagrams
AUO T546HF02-VO-CB_T-con Schematic Diagram ..................210
Samsung ESP_C4LV0.4 LJ94-03842E T-Con Schematic Diagram..246
Sharp RUNTK0093FVZx_4K2K 120Hz_LC60UD20KN_T-con
Schematic Diagram ............................................................251
How to Use This Repair Guide . ............................................................... 10
How to Modify and Upgrade LCD TV to LED Backlight with
Step-by-Step . ................................................................................................. 11
Parts and Tools ............................................................................................................ 12
Learn How to Modify & Upgrade LCD TV to LED Backlight . ......... 17
How to Connect from 4 x LED Strips to 6 x LED Strips . ....................... 40
How to Programming the LED/LCD TV Mainboard Correctly .. 47
3 Types of Programming Methods for LED/LCD TV Mainboard . ... 48
How to Programming the LED/LCD TV Mainboard . ............................ 51
How to Programming the Universal TV Mainboard . ............................... 54
Where to Find or Get the TV Firmware . ........................................................ 55
A Superb Secret Revealed on How to Repair LCD/LED TV
Mainboard . ..................................................................................................... 56
What’s the Benefit of This TV Start-Up Log Help to Repairer . ......... 57
How to Operate the TV Start-Up Log . ............................................................. 57
How to Read the TV Start-Up Log . .................................................................... 66
New PSU Self Test Method for Modern TV Power Supply . .......... 72
How to Build A PSU Self Test 3V-JIG . ............................................................ 72
Using the 3V-JIG for Testing the Power Supply (Test 1 of 2) . ............. 76
Using the 3V-JIG for Testing the Backlight (Test 2 of 2) . ..................... 78
Using the 3V-JIG for Troubleshooting Backlight . ..................................... 79
Secret Revealed on How to Fast Check the Bad LED Light Bulb
in LED TV Backlight . ................................................................................. 81
Process to Troubleshooting and Repairing LED TV Backlight &
LED Strip . ...................................................................................................... 83
How to Remove the LED Light Bulb from LED Strip Easily . ...... 89
LCD/LED TV Power Supply Repair Tips . ......................................... 95
LCD & LED TV Repair Tips . ............................................................... 100
BONUS-A: LG LED/LCD TV Interconnect Schematic Diagrams
29LN4510-Interconnect_2013................................117
42LB5800-Interconnect_2014................................119
42LN5300-Interconnect_2013................................124
47LB6000-Interconnect_2014................................132
47LN5750-Interconnect_2013................................139
49LF5500-Interconnect_2015................................147
49UB8500-Interconnect_2014................................155
50LB6500-Interconnect_2014................................168
55EA9800-Interconnect-OLED_2013.......................177
55LA8600-Interconnect_2013................................184
55LA9700-UHD_Interconnect_2013.........................193
55LB7200-Interconnect_2014................................202
BONUS-A: T-Con Board Schematic/Circuit Diagrams
AUO T546HF02-VO-CB_T-con Schematic Diagram ..................210
Samsung ESP_C4LV0.4 LJ94-03842E T-Con Schematic Diagram..246
Sharp RUNTK0093FVZx_4K2K 120Hz_LC60UD20KN_T-con
Schematic Diagram ............................................................251
