PANASONIC PLASMA - TH-42PX75U-TH-42PX77U-TH-50PX77U-TH-50PX75U
7 BLINKS OF STANDBY LIGHT.
Trouble Mode: SC energy Recovery SOS.
Defective boards (possibility): SC, SS, D, P.
- Disconnect connectors SC2, and SC20 from the SC board. Turn the TV on. Does the TV power up and stay on? If yes; 'SC' board is faulty. If No:
- Connect 'SC2' and 'SC20'. Disconnect 'CN P12' from the 'P' board and 'SS11', 'SS34' and 'SS23' from the SS board. Place the jumper from SS34 between pins '8'&'10' of P`12. Turn ON the TV. Does the TV power up and stay ON? If yes; 'SS' board is faulty.
- If No; Connect CN P12, SS11, SS34 & SS23. Remove 'A' board block assembly to gain access to the 'D' & 'C' boards. Have to remove four fixing screws and '7' connectors. [Ground the base of Q302 on the 'D' board and turn the power ON.
- Does the TV stay ON? If yes; reseat the ribbon cables between 'D' & 'C' boards. Also reseat the cables between 'C' boards.
- If No; Does the 'P' board outputs 15V at pin '7' of 'P7' and Vsus at pin '1' of 'P2' before the TV shuts down? If yes, 'D' board is faulty.
- If No; 'P' board is faulty.
VSUS about 180V. Before connecting P2 or P11, discharge is necessary to prevent shock caused by VSUS.
Place the jumper across pin '8' & '10' of connector 'P12'. The unit will not enter the standby mode without the jumper.
SC BOARD:
SS BOARD:
D BOARD
P BOARD:
