Table of Contents
Introduction ...................................................................................................... 11
Plasma TV Basic Information.......................................................................... 13
General Info ........................................................................................... 13
Components Name in Plasma TV ......................................................... 16
What is Plasma Module? .................................................................................. 20
The Plasma Modules ............................................................................. 22
Single & Dual Scan Plasma Module/Panel .......................................... 22
Plasma Module PCBs Terminology/Name Chart ............................... 25
Plasma Module PCB Boards and Function Description .................... 26
Plasma Module PCBs Location & Structure ...................................... 34
LG Plasma TV .......................................................................... 35
LG Plasma Module ............................................................ 36
Power Start-Up Sequence for LG Plasma TV .................................... 50
LG Plasma TV Power Supply (PSU) Self Test Method ................ 64
How to Self Test LG Plasma TV PSU Board ....................................... 64
Making the Light Bulbs Tool ................................................................ 65
Various LG Plasma TV Power Supplies ............................................. 67
LG Old Models PDP PSU Board Self Test Method ........................... 78
LG Plasma Panel /Module Self Test Method ...................................... 81
Various LG Plasma Panel Self Test Method ....................................... 82
How to Testing Plasma TV PCB Board & Their Components ......... 86
DC Voltage & Waveform Adjustment ............................ 88
VA & VS Adjustment ....................................................... 89
PSU Board Voltages & Diode Check .............................. 90
How to Check & Test Y-SUS Board ............................... 91
LG 50PJ350 Y-SUS Test Points Voltages ....................... 94
VSC & -Vy Adjustment .................................................... 96
Y-Drive Signal Overview .................................................. 97
Locking on to the Y-Drive Waveform Tip ...................... 98
Observing the Y-Drive signal for SetUp Adjustment .... 99
SetUp and Set Down Adjustment .................................. 100
Y-SUS Board Troubleshooting Vscan ........................... 103
Other Connectors Voltages & Diode Check Values in
Y-SUS Board ................................................................... 104
How to Check Y-SUS FETs ........................................... 110
Y-SUS Board with IPM Module .................................... 113
How to Testing IPM Module .......................................... 115
Y-Drive Board Explained ............................................... 116
Y-Drive Board Diode Check for Scan & FG ................ 120
Y-Drive Board Troubleshooting .................................... 121
Z-SUS Board Explained ................................................. 126
Z-SUS Block Diagram .................................................... 126
Z-SUS Board Components Identification ..................... 127
Z-SUS Board Waveform ................................................ 128
VZB (Z-Bias) Adjustments ............................................. 129
Other Connectors Voltages & Diode Check Values in
Z-SUS Board .................................................................... 130
Control Board (CTRL Board) Explained ..................... 131
Control Board Components Identification and Check 132
CTRL Board Temperature Sensor Location ............... 132
Locking on to the Y-Drive or Z-Drive Waveform Tip . 133
Checking the Crystal X101 “Clock” on the Control
Board ................................................................................ 133
Control Board Signals .................................................... 134
Other Connectors Voltages & Diode Check Values in
Control Board .................................................................. 135
X-Board (Left, Right & Centre) Explained .................. 138
X Board TCP Heat Sink Warning ................................. 140
Tape Carrier Package (TCP) ......................................... 141
How to Testing TCP ........................................................ 141
TCP Visual Observation, Damaged TCP ..................... 142
Other Connectors Voltages and Diode Check Values in
X Board/s ......................................................................... 143
How to Troubleshoot the COF ICs ............................... 144
Main Board Section ........................................................ 146
LG 50PJ350 Main Board Components Voltages ......... 148
Main Board Tuner Explained ........................................ 149
Main Board Crystal X1, X401, and X402 Check ......... 150
Main Board P703 LVDS Signal Test Points ................. 150
Other Connectors Voltages and Diode Check in
Mainboard ....................................................................... 151
Front IR, Power LED and Soft Touch Key Pad
Section .............................................................................. 153
Front Control Board Connectors Voltages & Diode
Check Value ..................................................................... 154
Soft Touch Key Pad Section ........................................... 155
Soft Touch Key Pad Resistance and Diode Mode Check
Values ............................................................................... 157
Panasonic Plasma TV .................................................................................... 158
Panasonic Plasma Modules ................................................................. 159
Panasonic Plasma TV Power Start-Up Sequence ............................. 163
Standby Operation ......................................................................... 163
Standby Circuit Explanation .................................................... 163
Power On Operation ...................................................................... 164
Power On Circuit Explanation ................................................. 164
CPU Commands Explanation .................................................. 165
Sub Voltage Distribution Explanation ................................. 167
Overview of Voltage Distribution ........................................... 169
Panasonic Plasma TV Power Supply Self Test Method ................... 171
Example of Panasonic PDP PSU Board Self Test ........ 171
Panasonic Plasma TV Self Test Tips ............................. 171
Panasonic Old Models PDP PSU Board Self Test Method .............. 173
Troubleshooting Panasonic PDP Shutdown Problems .................... 178
Power LED Error Code Definition .......................................... 179
Protection Circuit Block Diagram ................................. 180
Troubleshooting 1~12 Blinks Failures .......................... 180
Troubleshooting No Power/Dead Unit .......................... 194
2012 Panasonic Plasma TV’s Behaviour After Connector
Removal ............................................................................ 195
Behaviour Comparison Between 2010 and 2011 Models
When the TV Fail with Shorted Vsus (VS), Vda (Va) or
P15V ................................................................................. 195
How to Troubleshooting Panasonic PDP for Picture Problems ..... 196
Diagnosis by Test Pattern When OSD Menu is Available ............... 196
VS (Vsus) Adjustment with Remote Control .................................... 201
Samsung Plasma TV ...................................................................................... 203
Samsung Plasma Modules ................................................................... 204
Samsung Plasma TV Power Start-Up Sequence .............................. 205
Samsung Plasma TV Power Supply Self Test Method .................... 207
Samsung Old Models PDP PSU Board Self Test Method ............... 209
Samsung Plasma Panel Self Test Method ......................................... 216
Logic Board (Control Board) Self Test Method ..................... 217
Isolating the Logic Board from the Main Board .................... 218
Samsung Plasma TV Repair Made Simple ....................................... 219
Vital Signs: VS, Va, Vsc and Ve Voltages ............................... 219
Look for the Voltage Label ....................................................... 219
VS – The Sustain Voltage ......................................................... 220
Va – The Address Voltage ........................................................ 221
Vsc – Scan Voltage .................................................................... 222
Ve – Erase Voltage .................................................................... 223
The SMPS Switch Mode Power Supply .................................. 224
Testing and Turning On the Supply ........................................ 225
New Logic Board Sequences for the Pxx490 (PNE490) Models
Samsung Plasma TV ............................................................................ 227
How to Troubleshooting the Y-Buffer Board ................................... 228
Conclusion for Plasma TV Repair ............................................................... 235
Collection of Plasma TV Display Faults and Their Repair Solution ........ 237
LG Plasma TV Display Faults ............................................................ 237
Panasonic Plasma TV Display Faults ................................................ 242
Samsung Plasma TV Display Faults .................................................. 254
Plasma TV Repair Tips ................................................................................. 260
LG Plasma TV or Module Repair Tips ............................................. 260
Panasonic Plasma TV or Module Repair Tips ................................. 272
Samsung Plasma TV or Module Repair Tips ................................... 296
Plasma TV Repair Case History ................................................................... 308
Conclusion ........................................................................................................ 318
BONUS-A: (Inside this eBook)
LG Plasma TV Interconnect Schematic Diagrams..... 319
LG 42PG20- 42G1 Panel ....................................320
LG 42PQ30- 42G2 Panel .................................... 322
LG 42PW350- 42T3 Panel .................................. 324
LG 50PG20- 50G1 Panel ................................... 330
LG 50PJ350- 50T1 Panel .................................... 332
LG 50PK250- 50R1 Panel ...................................335
LG 50PQ30- 50G2 Panel ....................................338
LG 50PS60- 50H3 Panel .....................................341
LG 60PK750- 60R1Panel ....................................344
Introduction ...................................................................................................... 11
Plasma TV Basic Information.......................................................................... 13
General Info ........................................................................................... 13
Components Name in Plasma TV ......................................................... 16
What is Plasma Module? .................................................................................. 20
The Plasma Modules ............................................................................. 22
Single & Dual Scan Plasma Module/Panel .......................................... 22
Plasma Module PCBs Terminology/Name Chart ............................... 25
Plasma Module PCB Boards and Function Description .................... 26
Plasma Module PCBs Location & Structure ...................................... 34
LG Plasma TV .......................................................................... 35
LG Plasma Module ............................................................ 36
Power Start-Up Sequence for LG Plasma TV .................................... 50
LG Plasma TV Power Supply (PSU) Self Test Method ................ 64
How to Self Test LG Plasma TV PSU Board ....................................... 64
Making the Light Bulbs Tool ................................................................ 65
Various LG Plasma TV Power Supplies ............................................. 67
LG Old Models PDP PSU Board Self Test Method ........................... 78
LG Plasma Panel /Module Self Test Method ...................................... 81
Various LG Plasma Panel Self Test Method ....................................... 82
How to Testing Plasma TV PCB Board & Their Components ......... 86
DC Voltage & Waveform Adjustment ............................ 88
VA & VS Adjustment ....................................................... 89
PSU Board Voltages & Diode Check .............................. 90
How to Check & Test Y-SUS Board ............................... 91
LG 50PJ350 Y-SUS Test Points Voltages ....................... 94
VSC & -Vy Adjustment .................................................... 96
Y-Drive Signal Overview .................................................. 97
Locking on to the Y-Drive Waveform Tip ...................... 98
Observing the Y-Drive signal for SetUp Adjustment .... 99
SetUp and Set Down Adjustment .................................. 100
Y-SUS Board Troubleshooting Vscan ........................... 103
Other Connectors Voltages & Diode Check Values in
Y-SUS Board ................................................................... 104
How to Check Y-SUS FETs ........................................... 110
Y-SUS Board with IPM Module .................................... 113
How to Testing IPM Module .......................................... 115
Y-Drive Board Explained ............................................... 116
Y-Drive Board Diode Check for Scan & FG ................ 120
Y-Drive Board Troubleshooting .................................... 121
Z-SUS Board Explained ................................................. 126
Z-SUS Block Diagram .................................................... 126
Z-SUS Board Components Identification ..................... 127
Z-SUS Board Waveform ................................................ 128
VZB (Z-Bias) Adjustments ............................................. 129
Other Connectors Voltages & Diode Check Values in
Z-SUS Board .................................................................... 130
Control Board (CTRL Board) Explained ..................... 131
Control Board Components Identification and Check 132
CTRL Board Temperature Sensor Location ............... 132
Locking on to the Y-Drive or Z-Drive Waveform Tip . 133
Checking the Crystal X101 “Clock” on the Control
Board ................................................................................ 133
Control Board Signals .................................................... 134
Other Connectors Voltages & Diode Check Values in
Control Board .................................................................. 135
X-Board (Left, Right & Centre) Explained .................. 138
X Board TCP Heat Sink Warning ................................. 140
Tape Carrier Package (TCP) ......................................... 141
How to Testing TCP ........................................................ 141
TCP Visual Observation, Damaged TCP ..................... 142
Other Connectors Voltages and Diode Check Values in
X Board/s ......................................................................... 143
How to Troubleshoot the COF ICs ............................... 144
Main Board Section ........................................................ 146
LG 50PJ350 Main Board Components Voltages ......... 148
Main Board Tuner Explained ........................................ 149
Main Board Crystal X1, X401, and X402 Check ......... 150
Main Board P703 LVDS Signal Test Points ................. 150
Other Connectors Voltages and Diode Check in
Mainboard ....................................................................... 151
Front IR, Power LED and Soft Touch Key Pad
Section .............................................................................. 153
Front Control Board Connectors Voltages & Diode
Check Value ..................................................................... 154
Soft Touch Key Pad Section ........................................... 155
Soft Touch Key Pad Resistance and Diode Mode Check
Values ............................................................................... 157
Panasonic Plasma TV .................................................................................... 158
Panasonic Plasma Modules ................................................................. 159
Panasonic Plasma TV Power Start-Up Sequence ............................. 163
Standby Operation ......................................................................... 163
Standby Circuit Explanation .................................................... 163
Power On Operation ...................................................................... 164
Power On Circuit Explanation ................................................. 164
CPU Commands Explanation .................................................. 165
Sub Voltage Distribution Explanation ................................. 167
Overview of Voltage Distribution ........................................... 169
Panasonic Plasma TV Power Supply Self Test Method ................... 171
Example of Panasonic PDP PSU Board Self Test ........ 171
Panasonic Plasma TV Self Test Tips ............................. 171
Panasonic Old Models PDP PSU Board Self Test Method .............. 173
Troubleshooting Panasonic PDP Shutdown Problems .................... 178
Power LED Error Code Definition .......................................... 179
Protection Circuit Block Diagram ................................. 180
Troubleshooting 1~12 Blinks Failures .......................... 180
Troubleshooting No Power/Dead Unit .......................... 194
2012 Panasonic Plasma TV’s Behaviour After Connector
Removal ............................................................................ 195
Behaviour Comparison Between 2010 and 2011 Models
When the TV Fail with Shorted Vsus (VS), Vda (Va) or
P15V ................................................................................. 195
How to Troubleshooting Panasonic PDP for Picture Problems ..... 196
Diagnosis by Test Pattern When OSD Menu is Available ............... 196
VS (Vsus) Adjustment with Remote Control .................................... 201
Samsung Plasma TV ...................................................................................... 203
Samsung Plasma Modules ................................................................... 204
Samsung Plasma TV Power Start-Up Sequence .............................. 205
Samsung Plasma TV Power Supply Self Test Method .................... 207
Samsung Old Models PDP PSU Board Self Test Method ............... 209
Samsung Plasma Panel Self Test Method ......................................... 216
Logic Board (Control Board) Self Test Method ..................... 217
Isolating the Logic Board from the Main Board .................... 218
Samsung Plasma TV Repair Made Simple ....................................... 219
Vital Signs: VS, Va, Vsc and Ve Voltages ............................... 219
Look for the Voltage Label ....................................................... 219
VS – The Sustain Voltage ......................................................... 220
Va – The Address Voltage ........................................................ 221
Vsc – Scan Voltage .................................................................... 222
Ve – Erase Voltage .................................................................... 223
The SMPS Switch Mode Power Supply .................................. 224
Testing and Turning On the Supply ........................................ 225
New Logic Board Sequences for the Pxx490 (PNE490) Models
Samsung Plasma TV ............................................................................ 227
How to Troubleshooting the Y-Buffer Board ................................... 228
Conclusion for Plasma TV Repair ............................................................... 235
Collection of Plasma TV Display Faults and Their Repair Solution ........ 237
LG Plasma TV Display Faults ............................................................ 237
Panasonic Plasma TV Display Faults ................................................ 242
Samsung Plasma TV Display Faults .................................................. 254
Plasma TV Repair Tips ................................................................................. 260
LG Plasma TV or Module Repair Tips ............................................. 260
Panasonic Plasma TV or Module Repair Tips ................................. 272
Samsung Plasma TV or Module Repair Tips ................................... 296
Plasma TV Repair Case History ................................................................... 308
Conclusion ........................................................................................................ 318
BONUS-A: (Inside this eBook)
LG Plasma TV Interconnect Schematic Diagrams..... 319
LG 42PG20- 42G1 Panel ....................................320
LG 42PQ30- 42G2 Panel .................................... 322
LG 42PW350- 42T3 Panel .................................. 324
LG 50PG20- 50G1 Panel ................................... 330
LG 50PJ350- 50T1 Panel .................................... 332
LG 50PK250- 50R1 Panel ...................................335
LG 50PQ30- 50G2 Panel ....................................338
LG 50PS60- 50H3 Panel .....................................341
LG 60PK750- 60R1Panel ....................................344
