Panasonic TC-P42C1 - 41.6" Plasma TV, Revised Troubleshooting Handbook

Page 1: ... TV 12th Generation Model TC P42PX1 TC P42X1 TC P50X1 TC P42C1 TC P50C1 TC P42S1 TC P46S1 TC P50S1 TC P54S1 TC P42U1 TC P46U1 TC P50U1 TC P42G10 TC P46G10 TC P50G10 TC P54G10 TC P42G15 TC P46G15 TC P50G15 TC 42PS14 TC 50PS14 TC P50V10 TC P54V10 Applies to models TTG090507CP REV091117 New 7 blinks Troubleshooting Procedure ...

Page 2: ... to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death Copyright 2009 by Panasonic Service and Technology Company All rights reserved Unauthorized copying and distribution is...

Page 3: ...ce Test All Models Except TC 50PX14 TC P50X1 TC P50C1 30 SC Board Resistance Test Models TC 50PX14 TC P50X1 TC P50C1 31 1 Blink Error Code All Models 32 2 Blinks Error Code All Models 33 2 Blinks Error Code All Models 34 3 Blinks Error Code All Models 35 4 Blinks Error Code All Models 36 Subject Slide 5 Blinks Error Code 37 5 Blinks Error Code All Models 38 5 Blinks Error Code All Models 39 5 Blin...

Page 4: ... before shutdown 2 Check if the power comes up after disconnecting the board under suspicion If power comes up after disconnecting a board the board is defective Power comes up equals no shutdown 2 Troubleshooting Video and Audio problems 3 Examples of video problems 4 Adjustment after PCB exchange 1 After exchanging the following boards voltage adjustment is required P board SC board SS board Ple...

Page 5: ...Slide 5 HD boards Layout TC P42X1 ...

Page 6: ...Slide 6 Full HD boards Layout TC P42S1 ...

Page 7: ...Slide 7 Full HD Connector s Location TC P42S1 ...

Page 8: ...8 Troubleshooting Shutdown Problems CAUTION Some steps require removal of connectors and sometimes PC boards removal Do not let the TV run for more than 30 seconds while connectors or boards are disconnected ...

Page 9: ...ill flash a pattern indicating the circuit that has failed If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off CAUTION Some steps require removal of connectors and sometimes PC boards removal Do not let the TV run for more than 30 seconds while connectors or boards are disconnected ...

Page 10: ...Slide 10 Shutdown Detect Block Diagram ...

Page 11: ...Slide 11 HD Panel Drive SOS Detect Block Diagram TC P42X1 ...

Page 12: ...Slide 12 Full HD Panel Drive SOS Detect Block Diagram TC P42S1 ...

Page 13: ... A32 Unplugged SOS 6 Blinks A20 Unplugged A31 Unplugged A32 Unplugged TV Stays On With Black Screen HD Models Do not remove any connectors from any of the PC boards unless instructed to do so CAUTION Some steps require removal of connectors and sometimes PC boards removal Do not let the TV run for more than 30 seconds while connectors or boards are disconnected CAUTION The TV power should not be t...

Page 14: ...ed OK SC20 Unplugged SS11 Unplugged OK Model TC P42X1 SC Board Isolation Connector Connector Connector Connector On SS board Result SC2 Unplugged SOS 7 Blinks SC3 Unplugged SOS 6 Blinks SC20 Unplugged OK SC2 Unplugged SC3 Unplugged SOS 7 Blinks SC2 Unplugged SC20 Unplugged SOS 8 Blinks SC3 Unplugged SC20 Unplugged SOS 8 Blinks 42 HD Models CAUTION Some steps require removal of connectors and somet...

Page 15: ... 6 Blinks SC20 Unplugged SS11 Unplugged SOS 6 Blinks Model TC P50X1 SC Board Isolation Connector On C1 board Connector Connector Connector On SS board Result SC3 Unplugged SOS 6 Blinks SC20 Unplugged SOS 6 Blinks SC3 Unplugged SC20 Unplugged SS11 Unplugged SOS 8 Blinks C10 Unplugged SC20 Unplugged SS11 Unplugged OK 50 HD Models CAUTION Some steps require removal of connectors and sometimes PC boar...

Page 16: ...gged A31 Unplugged SOS 6 Blinks A33 Unplugged A32 Unplugged OK A31 Unplugged A32 Unplugged SOS 6 Blinks A33 Unplugged A31 Unplugged A32 Unplugged TV Stays On With Black Screen Full HD Models CAUTION Some steps require removal of connectors and sometimes PC boards removal Do not let the TV run for more than 30 seconds while connectors or boards are disconnected Do not remove any connectors from any...

Page 17: ...sult SS11 Unplugged SC2 Unplugged 7 Blinks SS11 Unplugged SC20 Unplugged 6 Blinks SS11 Unplugged SC2 Unplugged SC20 Unplugged 6 Blinks SS11 Unplugged SS33 Unplugged SC2 Unplugged 7 Blinks SS11 Unplugged SS33 Unplugged SC20 Unplugged 6 Blinks SS11 Unplugged SS33 Unplugged SC2 Unplugged SC20 Unplugged 6 Blinks SS33 Unplugged SC2 Unplugged 7 Blinks SS33 Unplugged SC20 Unplugged 6 Blinks SS33 Unplugge...

Page 18: ...n between VF_GND and CHA on the SC board This floats point CHA triggering the SOS7 detect circuit This outputs a high to the A board through connector SC20 triggering shutdown A new SC test fixture Jig can be used when the SU and SD boards are isolated The jig is a small connector with a jumper between pin 1 and pin 2 The part number is TZSC09187 It plugs into connector SC50 on the SC board If the...

Page 19: ...een pins 1 and 2 of connector SC50 on the SC board Note If the SC jig is not available install a jumper between pins 1 and 2 of connector SC50 on the SC board Remove the jig or the jumper after completing isolation procedure When this is done the display is completely black No picture Note This procedure could be useful when troubleshooting 7 blinks problems If the power LED continues to blink eve...

Page 20: ...de 20 Procedure to Isolate both SU SD at the Same Time If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off ...

Page 21: ... connector SC50 on the SC board Note If the SC jig is not available install a jumper between pins 1 and 2 of connector SC50 on the SC board Remove the jig or jumper after completing isolation procedure Note This procedure could be useful when troubleshooting 7 blinks problems If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seco...

Page 22: ...d 2 of connector SC50 on the SC board Note If the SC jig is not available install a jumper between pins 1 and 2 of connector SC50 on the SC board Remove the jig or jumper after completing isolation procedure Note This procedure could be useful when troubleshooting 7 blinks problems If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a fe...

Page 23: ... How to Easily Gain Access to the SS board SCREW SCREW SCREW Remove the 3 screws that hold the A board assembly in place Let the A board assembly rest on the speaker s magnet to gain access to the SS board 1 2 ...

Page 24: ...ve the 4 screws holding the front panel in place Remove the cables from the speakers Remove the screws from the speakers 2 each Remove the speakers Remove the front cabinet Note To remove the front cabinet pull the bottom slightly forward and then lift it up ...

Page 25: ...s on the SU and SD boards for blown hole on the surface Note In some models it is not possible to check if these ICs are blown because they use surface mount heat sinks that are glued to the surface of the ICs This is an example of what a blown IC looks like ...

Page 26: ...rds Resistance Test Procedure Note The result of the resistance test determine if the boards are bad but it does not determine if they are 100 good For this reason after performing a resistance test we need to further check the boards that check OK using another procedure ...

Page 27: ...ote A low resistance reading indicates a defective SU board Preparation Disconnect AC Power prior to making any disconnection or connection Wait at least 2 minutes before the removal of any connector Note If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off Unplug connector SU41 and SU11 Remove the 2 ...

Page 28: ...2 1Mega ohms Note A low resistance reading indicates a defective SD board Preparation Disconnect AC Power prior to making any disconnection or connection Wait at least 2 minutes before the removal of any connector Note If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off Unplug connectors SD42 SD46 an...

Page 29: ...ga ohms Note A low resistance reading indicates a defective SD board Preparation Disconnect AC Power prior to making any disconnection or connection Wait at least 2 minutes before the removal of any connector Note If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off Unplug connectors SD42 SD46 and SD1...

Page 30: ...3 is approximately 2 9Kilo ohms and approx 5 7Kilo ohms for pin 5 Note A low resistance reading indicates a defective SC board Preparation Disconnect AC Power prior to making any disconnection or connection Wait at least 2 minutes before the removal of any connector Note If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds u...

Page 31: ...pproximately 2 9Kilo ohms and approx 5 7Kilo ohms for pin 7 Note A low resistance reading indicates a defective SC board Preparation Disconnect AC Power prior to making any disconnection or connection Wait at least 2 minutes before the removal of any connector Note If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until t...

Page 32: ...e 5V at pin 9 of connector P25 A25 Make sure that connectors P25 and D25 are properly seated Replace the P board Is there continuity between pin 9 of connector P25 and pin 5 of connector P7 on the P board No Yes Reseat P25 A25 or Replace the cable Unplug in the TV Start Here If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few secon...

Page 33: ...disconnection or connection 1 Missing P15V 2 A short of the P15V 3 Wrong diagnostic by the A board These 3 conditions can cause the TV to shutdown and the power LED to blink 2 times If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off ...

Page 34: ...and P25 on the P board Measure the resistance between pin 1 of connector P6 and ground Chassis Is there a short circuit No Yes Replace The P board Reconnect P11 and measure the resistance between pin 1 of connector P6 and ground Chassis Is there a short circuit No Yes Replace The SS board Disconnect SC20 on the SC board and measure the resistance between pin 1 of connector P6 and ground Chassis Re...

Page 35: ...ard A Board Replace the A board Warning Disconnect AC Power prior to making any disconnection or connection Start Here If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off ...

Page 36: ...here a short to ground Replace the SS board Replace the SC board Disconnect the TV Disconnect P2 and P11 on the P board Measure the resistance between pin 1 of connector SS11 on the SS board and ground Chassis Yes No Is there a short to ground All other 2009 Models TC P42G10 TC P46G10 TC 50G10 TC P54G10 Measure the resistance between pin 1 of connector SC2 on the SC board and ground Chassis Replac...

Page 37: ...P5V 2 A short of the P5V 3 A short of the Vda line Note missing Vda from the P board does not cause 5 blinks 4 Wrong diagnostic by the A board These 4 conditions can cause the TV to shut down and the power LED to blink 5 times If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off ...

Page 38: ...nection or connection Does the power supply makes a chirp noise at plug in Start Here Yes No Yes No Is there a short to ground Replace the SS board Replace the SC board Disconnect the TV Disconnect P2 and P11 on the P board Measure the resistance between pin 1 of connector SS11 on the SS board and ground Chassis Yes No Is there a short to ground All other 2009 Models TC P42G10 TC P46G10 TC 50G10 T...

Page 39: ...5 and disconnect SC20 on the SC board Measure the resistance between pin 5 of connector P25 on the P board and ground Chassis Yes No Is there a short to ground Replace the SC board Reconnect SC20 and disconnect SS23 HD models SS33 Full HD models on the SS board Measure the resistance between pin 5 of connector P25 on the P board and ground Chassis Disconnect SC46 and reconnect SC20 on the SC board...

Page 40: ...B If the C boards are ok replace the Panel Note B The C board can be checked individually Reconnect the ribbon cables from the A board A31 A32 and A20 for HD models A33 Disconnect the flex cables between the panel and the C boards tested Measure the resistance between pin 5 of connector P25 on the P board and ground Chassis If there is still a short circuit change the C board If the power LED cont...

Page 41: ... to making any disconnection or connection LIST OF MODELS TC P42X1 TC P42C1 TC 42PX14 TC P50X1 TC P50C1 TC 50PX14 CAUTION The TV power should not be turned on while SC2 is disconnected This could damage the SS board If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off ...

Page 42: ...Boards can be defective Follow procedure on slides 17 21 to determine which of the 2 boards is defective No Yes Did the number of blinks change Replace the A board No Yes Is the power LED still blinking Unplug the TV and with SC20 still disconnected disconnect SS11 on the SS board Plug in the TV and turn it on Replace the A board Replace the SS and A boards 6 times 8 times Replace the SS and SC bo...

Page 43: ...mber of blinks change Replace the A board Is the power LED still blinking NOTE The SS board may had just become damaged Shorted Vsus LIST OF MODELS TC P50X1 TC P50C1 TC 50PX14 Start Here 10 times CAUTION The TV power should not be turned on while SC2 is disconnected This could damage the SS board Unplug the TV and disconnect connector SC20 on the SC board SS11 on the SS board and C10 on the C1 boa...

Page 44: ... prior to making any disconnection or connection LIST OF MODELS TC P42S1 TC P42G10 TC P42U1 TC P42U1 TC 42PS14 TC P46S1 TC P46G10 TC P46U1 TC P50S1 TC P50G10 TC P50U1 TC P50V10 TC 50PS14 TC P54S1 TC 54G10 If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off ...

Page 45: ...TC P42U1 TC P42U1 TC 42PS14 TC P46S1 TC P46G10 TC P46U1 TC P50S1 TC P50G10 TC P50U1 TC P50V10 TC 50PS14 TC P54S1 TC 54G10 Unplug the TV and reconnect connector SC20 and the ribbon cable between the C boards Disconnect connector SS33 on the SS board Plug in the TV and press the power switch Replace the SC board Unplug the TV and reconnect connector SS33 on the SS board Follow the SU SD boards isola...

Page 46: ...conds until the LED turns off Remove the front cabinet and expose the panel to a bright light for a thorough visual inspection Check for cracks and blown pixels or any other abnormalities Check the ICs on the SU and SD boards for blown hole on the surface Note In some models it is not possible to check if these ICs are blown because they use surface mount heat sinks that are glued to the surface o...

Page 47: ...low this procedure when all 3 boards check OK Replace the SU SD and SC boards Replace the SC board Go to the next slide Go to the Slide 16 1 Remove the front cabinet and check for cracks and blown pixels For front cabinet removal procedure go to slide 24 2 Check the ICs on the SU and SD boards for blown hole on the surface Go to slide 25 to see pictures 3 Perform the SU SD and SC boards resistance...

Page 48: ...lug in the TV and press the power switch No Replace the SU and the SD boards Does the TV shut down and the power LED blink 7 times A Start Here If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off 7 Blinks Error Code 3 of 4 ...

Page 49: ...eplace the SC and the A boards Unplug the TV and reconnect connector SC20 and the SU and SD boards Measure the resistance between pin 1 of P2 SC2 or P11 SS11 Vsus and ground Is there a short circuit Yes No Unplug SS11 and measure the resistance between pin 1 of SC2 P2 Vsus and ground Is there a short circuit Yes No Replace the SS And SC boards Replace the SC and A boards Replace the P and SC board...

Page 50: ...r Code HD Models SS_Flexible Printed Circuit FPC _Detect SOS8_SS TC P42X1 If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off ...

Page 51: ...ard are properly seated 50 HD Models TC P50X1 TC P50C1 TC 50PX14 Make sure that connectors SS53 SS55 SS56 and SS21 on the SS board and connectors SS24 and SS58 on the SS2 board are properly seated Note D285 D16285 on the Service Manual is located approx of an inch away from the left side of connector SS22 ANODE CATHODES D285 D16285 If the power LED continues to blink even after the TV is unplugged...

Page 52: ...n the panel and the SS SS2 boards Make sure they are properly seated and that the connectors are properly locked Unplug the TV and reconnect SS23 Use a volt meter and place the positive probe on the anode of D285 on the SS board See previous slide for location while the negative probe is grounded Yes No Is there approx 7 2V at the anode of D285 on the SS board Replace the panel Replace SS board LI...

Page 53: ...Slide 53 8 Blinks Error Code Full HD Models If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off ...

Page 54: ...re that connectors SS61 SS64 and SS21 on the SS board and connectors SS24 and SS58 on the SS2 board are properly seated 50 and 54 Full HD Models TC P50S1 TC P50G10 TC P50U1 TC P50V10 TC 50PS14 TC P54S1 TC 54G10 Make sure that connectors SS53 SS55 SS56 and SS21 on the SS board and connectors SS24 and SS58 on the SS2 board are properly seated 42 FHD 46 FHD 50 54 FHD Note D280 D16280 on the Service M...

Page 55: ... problem Disconnect the TV Use a volt meter and place the positive probe on the anode of D280 on the SS board See previous slide for location while the negative probe is grounded Plug in the TV and turn it on Replace the A board Replace the SS board Replace the panel Unplug the TV and reconnect SS33 Remove the ribbon cables from connector A31 A32 and A33 on the A board Plug in the TV and turn it o...

Page 56: ...Defective Board A Board Replace the A board Warning Disconnect AC Power prior to making any disconnection or connection If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off ...

Page 57: ...nerations there s no 10 blinks error code at plug in for 2009 models When the A board is replaced the TV turns on in aging mode by itself at plug in What can possibly cause 10 blinks A Missing Shorted F_15V B Shorted Vsus C Missing Shorted SUB5V SUB9V BT30V D IC1100 IC9003 IC9004 E Possibly SU and SD boards A B B C D D D C If the power LED continues to blink even after the TV is unplugged press an...

Page 58: ...e a short circuit Yes No Replace the SC board See Note 2 See Note 3 Replace the P board Is there 15V at pin 7 of connector P6 at the moment the relay clicks No Yes Replace the A board Note 2 If the SS or SC board fail repeatedly with shorted Vsus replace the A board also Disconnect the TV and unplug connector A1 Plug in the TV Ground pin 8 of connector A1 momentarily Replace the P board Yes No Doe...

Page 59: ...sure that connectors SC20 A33 SC2 P2 P6 A6 are properly seated What can possibly cause 10 blinks A Missing Shorted F_15V B Shorted Vsus C Missing Shorted SUB5V SUB9V BT30V D IC1100 IC9003 IC9004 E Unplugged SC20 SC2 F Possibly SU and SD boards A B B C D D D E E C If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the...

Page 60: ...nnectors SS11 SS33 SC2 and SC20 Plug in the TV and press the power switch No Yes Replace the P board LIST OF MODELS TC P42S1 TC P42G10 TC P42U1 TC P42U1 TC 42PS14 TC P46S1 TC P46G10 TC P46U1 TC P50S1 TC P50G10 TC P50U1 TC P50V10 TC 50PS14 TC P54S1 TC 54G10 6 blinks 10 Blinks Replace the A board Disconnect the TV and unplug connector A1 Plug in the TV Ground pin 8 of connector A1 momentarily Yes No...

Page 61: ...r up and stay on No Yes Replace Fan A Unplug the TV and reconnect Fan Disconnect the connector from Fan B Place a jumper wire NOTE A between the center pin Black wire and the pin with the yellow wire on the black plug Plug in the TV and press the power switch Does the TV power up and stay on No Yes Replace Fan B Replace The A board JUMPER WIRE FAN CONNECTOR BLACK PLUG Warning Disconnect AC Power p...

Page 62: ...No Yes If the speakers wires are not pinched Replace the speaker Replace the A board Trouble Mode Audio SOS Defective Board Possibility A Board Pinched speaker wire Speaker Warning Disconnect AC Power prior to making any disconnection or connection Start Here If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED...

Page 63: ...g Disconnect AC Power prior to making any disconnection or connection Communication Error between IC8001 and IC1100 Replace the A board If the power LED continues to blink even after the TV is unplugged press and hold the power switch on the TV for a few seconds until the LED turns off ...

Page 64: ... TV and reconnect P6 and P25 only Plug in the TV and press the power switch Unplug the TV and reconnect C11 Disconnect C14 on the C1 board and plug in the TV Press the power switch It the TV turning on with only half of the screen working No No Do the relays click Replace The A board Is there 3 2V present Yes No Replace The P board If connections between P25 and A25 are OK replace the A board Is t...

Page 65: ...f the power with the POWER button on the main unit or the POWER button on the remote control Key command 1 button Main items Selection in forward direction 2 button Main items Selection in reverse direction 3 button Sub items Selection in forward direction 4 button Sub items Selection in reverse direction VOL button Value of sub items change in forward direction in reverse direction ...

Page 66: ... the TV for 5 seconds or disconnect the AC cord from the wall outlet To Exit the Self Check Mode Press and hold the Power button on the TV for 5 seconds or disconnect the AC cord from the wall outlet TV volume down OK on remote only does a basic IC self check It does NOT clear any unit settings It does not clear channel programmed settings picture settings channel labels LOCK mode settings or pass...

Page 67: ...ory shipment setting To reset the TV Press and hold the VOLUME button on the TV and press the MENU button on the remote control for more than 3 seconds Note All customer programmed parameters will be erased To Exit Disconnect the AC cord from wall outlet ...

Page 68: ...ion The first 5 numbers out of the two 5 digits groups to the right of Status2 are used to determine the SOS history SOS History A history of SOS occurrences can be found under the Version Menu 0 0 0 0 0 Latest last before last After shipping Sec times After shipping First times 1 2 3 4 To Enter ...

Page 69: ...re 2 No picture 2 Basic concept of determining the defective board 1 Which area is the symptom displayed on the screen A Part of the screen B All over the screen 3 Adjustment after PCB exchange 1 After exchanging the following boards voltage adjustment is required P board SC board SS board Please refer to Service Manual ...

Page 70: ...ture gas leakage started at the left top corner Finally gas leakage will lead to the symptom No picture with buzz noise Start Upper or Lower half from front view Upper half Lower half Both area SU Board or A or SC SD Board or A or SC SC Board or A Right half Left half Left or Right half from front view A Board or C1 or Panel A Board or C2 or Panel Some part of the screen ...

Page 71: ...Slide 71 The End ...