Question about Panasonic TH-42PZ77U TV

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On Led lights seven times and the tv does not turn On

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Replace sc board and do firmware update

Posted on Dec 17, 2010

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Posted on Jan 02, 2017

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Have a samsung TV UN40H5203AFXZA will not turn on. When plugged in the stand-by light blinks seven times and goes off. Changed power,main and Tcon boards. 3 lights come on the Tcon board but go off.


Please un-plug the cable between the main board & the power supply, apply the AC power to it, if the back lights come on & still on, replace the main board; if the back lights did not come on, mostly the problem is defective back light LED strips.

May 08, 2017 | Samsung Televison & Video

1 Answer

Panasonic 50 inch plasma th 50px80ua tv won't turn on and red light flashes seven times


Hi Steve, The link below is a YouTube video showing a panasonic television with 7 red flashes, Also there's videos down the right side of the link that may help as well... I hope this helps............CHEERS..
Panasonic TC P50S30 review seven led flash

May 01, 2016 | Panasonic Televison & Video

1 Answer

Red LED Light Blinks 7 Times Tv Wont Turn On PLEASE HELP!


Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.
You must have through knowledge in electronics to proceed. This is a very skilled wor. You must have all measuring instruments, and ability to follow its schematic diagram.

Jun 12, 2012 | Sony KV-36XBR400 36" TV

1 Answer

Our tv turns off as soon as we turn it on. the red light blinks 7 times


Seven blinks = High voltage shutdown (overcurrent protection). The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits, otherwise send the TV to a workshop for a quote on likely parts and labour costs, then make a decision afterwards about whether it is economical to repair or not.

Usually it is either the flyback transformer, the tuning capacitors in the collector circuit of the horizontal output transistor(s) as well as the transistor(s) which could be faulty. These parts should be replaced at the same time.

Short-circuit horizontal output stage - hence the 7 blinks error code from the standby LED.

Mar 19, 2011 | Sony FD Trinitron WEGA KV-34HS420 34" TV

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

My led power indicator flashes seven times, when i cut the tv on it cuts back off. How do i fix this problem?


  • Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.
Hope that helps.

Nov 18, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Seven red blinking led


Check the link below to find the parts that are causing the LED to blink 7 times and replace them to fix the plasma.
http://www.fixya.com/support/t5048641-easy_replace_capacitors

Jun 14, 2010 | Philips 50PF9631D 50 in. HD-Ready Plasma...

1 Answer

Red LED light blinks 7 times when the set is turned on; no pictur


if you have the circuit diagram of your tv,check the horizontal polarisation IC closer to the line transformer and replace it.If it doesn't work,send the question again.

Sep 22, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Panasonic TH42PZ70B


Flashing RED lights in Panasonic TVs means a fatal error code. Unplug the TV, wait 1 minute and replug. If the LED still flashes it needs professional service.

Sep 04, 2008 | Panasonic TH-42PA20U/P 42 in. Plasma EDTV

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