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Troubleshoot my Panasonic TH-42pz77u with 7 blinks. Screen is blank.

Tried removing SU and SD boards, but still get 7 blinks.

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This youtube video should help.

Posted on Dec 07, 2016

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1 Answer

Power indicator light blinks-7 times. will a new power supply fix it


Physically disconnect the SU board and the SD board. (See precaution # 5)

Plug in the TV and turn it on.

Does the TV shut down and the power LED

blink 7 times?

Yes

No

Replace the Panel and the SU board.

(See precaution #3)

Reconnect the SD board only.

(See precaution # 5)

Plug in the TV and turn it on.

Yes

No

With the SU board and the SD board still disconnected, remove connectors SC2 and SC20 from the SC board (See precaution # 6)

Plug in the TV and turn it on.

Disconnect the SD board and reconnect the SU board. (See precaution # 5)

Plug in the TV and turn it on.

Yes

No

Replace the Panel, SD, and SU board.

(See precaution #3)

Replace the Panel and the SD board.

(See precaution #3)

Replace the SC board.

(See precaution #3)

No

Replace the D board.

(See precaution #3)

Does the TV shut down and the power LED

blink 7 times?

Does the TV shut down and the power LED

blink 7 times?

Does the TV shut down and the power LED
blink 7
There is a sequence that you have to check to figure out which board is bad,

Feb 16, 2011 | Panasonic TH-42PZ700U 42 in. Plasma...

1 Answer

Picture went out and no audio, red light on power blinks seven times and repeats.


Physically disconnect the SU board and the SD board. (See precaution # 5)

Plug in the TV and turn it on.

Does the TV shut down and the power LED

blink 7 times?

Yes

No

Replace the Panel and the SU board.

(See precaution #3)

Reconnect the SD board only.

(See precaution # 5)

Plug in the TV and turn it on.

Yes

No

With the SU board and the SD board still disconnected, remove connectors SC2 and SC20 from the SC board (See precaution # 6)

Plug in the TV and turn it on.

Disconnect the SD board and reconnect the SU board. (See precaution # 5)

Plug in the TV and turn it on.

Yes

No

Replace the Panel, SD, and SU board.

(See precaution #3)

Replace the Panel and the SD board.

(See precaution #3)

Replace the SC board.

(See precaution #3)

No

Replace the D board.

(See precaution #3)

Does the TV shut down and the power LED

blink 7 times?

Does the TV shut down and the power LED
blink 7 times?

Feb 15, 2011 | Panasonic TH-42PZ700U 42 in. Plasma...

2 Answers

TV will not turn on. Power light blinks 7 times, then pauses, blinks 7 times again. What could the problem be?


If you are a DIY then you will need to try to unplug the SD board and reconnect and try again, if it stills shutdown with 7 blinks then the SD board is bad and maybe the

Physically disconnect the SU board and the SD board. (See precaution # 5)

Plug in the TV and turn it on.

Does the TV shut down and the power LED

blink 7 times?

Yes

No

Replace the Panel and the SU board.

(See precaution #3)

Reconnect the SD board only.

(See precaution # 5)

Plug in the TV and turn it on.

Yes

No

With the SU board and the SD board still disconnected, remove connectors SC2 and SC20 from the SC board (See precaution # 6)

Plug in the TV and turn it on.

Disconnect the SD board and reconnect the SU board. (See precaution # 5)

Plug in the TV and turn it on.

Yes

No

Replace the Panel, SD, and SU board.

(See precaution #3)

Replace the Panel and the SD board.

(See precaution #3)

Replace the SC board.

(See precaution #3)

No

Replace the D board.

(See precaution #3)

Does the TV shut down and the power LED

blink 7 times?

Does the TV shut down and the power LED
blink 7 times?

Jan 11, 2011 | Panasonic TH-37PX50U 37 in. HD-Ready...

1 Answer

No power and the power light blinks 7 times


7 blinks: Driver SOS 2 SU / SD / SS Boards (SC floating voltage area). This sort of problem can only be undertaken by an authorised Panasonic service centre - get a quote on all the likely cost(s) involved, then make a decision afterwards - whether to go ahead or not.

Dec 25, 2010 | Panasonic TH-42PZ77U TV

1 Answer

Same problem, no turn on after 2years. 7 red light blinking. WTF!!


It is driver SOS - SU, SD, SE boards. One of them or combination need to be replaced.

Jul 16, 2010 | Panasonic TH-42PZ77U TV

1 Answer

I had the 7 blinking lights problem after tv shut


7 blinking Defective Board (possibility)
SC, SU, SD, P board (SC,SU,SD>D,P).
Connect
the connectors SC2(*2),
and SC20 to the SC board. Remove the SU board. Turn the TV on. Does the TV power up
and stay on IF YES REPLACED SU BOARD IF ON
Install
the SU board and
Remove the SD board. Turn the TV on. Does
it power up
and stay on? IF YES REPLACED SD BOARD

Feb 03, 2010 | Panasonic TH-42PX75U 42 in. Plasma...

1 Answer

7 blinking Red Light. Power Supply problem??


Need replaced su.sd and sc board
Panasonic TXNSC1RKTUS SC BOARD BOARD, SCAN DRIVE ASSY
Panasonic TXNSU1RKTU SU BOARD BOARD, UPPER SCAN OUT ASSY
Panasonic TXNSD1RKTU SD BOARD BOARD, LOWER SCAN OUT ASSY

Dec 09, 2009 | Panasonic Viera TH-46PZ85U Plasma TV

2 Answers

Th42px80u- tv wont come on and red light flashes 10 times


Here are all the Panasonic blink codes.
1 blink STV 5v sense DG Board

2 blinks 15v SOS D Board

3 blinks 3.3v SOS D Board

4 blinks Power SOS P Board

5 blinks 5v SOS D Board

6 blinks Driver SOS 1 SU / SD / SC Boards
(SC energy recovery circuit)

7 blinks Driver SOS 2 SU / SD / SS Boards
(SC floating voltage area)

8 blinks Driver SOS 3 SS Board
(SS energy recovery circuit)

9 blinks Panel Config. SOS

10 blinks Sub 5v SOS / Main 3v SOS DG Board
DTV 9v SOS / Tuner Power SOS

11 blinks Fan SOS PB Board

12 blinks Sound SOS H Board

13 blinks Communication error DG Board
with IC8001 (Pesks Lite 2)























7 blinks Driver SOS 2 SU / SD / SS Boards
(SC floating voltage area)

8 blinks Driver SOS 3 SS Board
(SS energy recovery circuit)

9 blinks Panel Config. SOS

10 blinks Sub 5v SOS / Main 3v SOS DG Board
DTV 9v SOS / Tuner Power SOS

11 blinks Fan SOS PB Board

12 blinks Sound SOS H Board

13 blinks Communication error DG Board
with IC8001 (Pesks Lite 2)

Oct 21, 2009 | Panasonic Viera TH-42PX80U Plasma TV

1 Answer

Same problem, 7 blinks


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} This could be 3 different things and needs to be taken care of by an authorized Panasonic technician

SU Board, SD Board, Panel

Jul 25, 2009 | Panasonic TH-42PZ77U TV

10 Answers

Panasonic th-42pz77u 42ed


Pin 93 of the MPU IC9003 monitors the status of the SC, SU, SD board. During normal operation, the photo-coupler PC6480 outputs a low to pin 93. If the SC, SU, or SD board becomes defective, a high is provided to pin 93. As a result, the unit shuts down and the power LED blinks 7 times.

Jan 07, 2008 | Panasonic TH-42PD50U 42 in. Plasma EDTV

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