Question about Panasonic Televison & Video

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My panasonic Led smart tv turns on with good picture for about 4 seconds then shuts off and the front red light blinks indefinitely. Tv is 7 years old. Thank you.

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Tom Chichester

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  • Panasonic Master
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Power supply failure

Posted on Nov 12, 2020

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5 Related Answers

ABRsvcs

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SOURCE: SONY WEGA KV-36HS420 will not come on

The blinking is an indication that the set detected a problem. The code usually indicates a bad regulator circuit. If yu can solder, you can probably fix this your self. Please let me know if you wish to attempt the repair. If not, expect a parts cost in the $25-$40 range plus the local labor rate for the repair.

Posted on Oct 01, 2008

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ginko

Ginko

  • 19396 Answers

SOURCE: toshiba 50HX81 projection 'tv- blinking red light

The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Posted on May 22, 2009

SOURCE: 2 year old Pioneer PDP-5070PU plasma TV with red

While not aware of particular problems with this TV (others may know it better) based on the description and my practice with plasmas I'd be inclined to believe that one of the two sustain boards is near end of life.

Could also be problems with the power board, usually caused by dried out capacitors, but could not find reports of that through Google, so my first idea holds.

If you have a screwdriver, muscules to move it around and patience to unscrew all the bolts that hold the back panel you can actually test my theory by disconnecting each sustain in turn and seeing if the TV powers with no problems.

The sustains are the two large boards - one of each side of the display - left and right. Each sustain has a pretty fat power cable connecting it to either the power board or the other sustain (through which it may be getting power).

If I have to guess I'd bet on the Y sustain, which is the larger of the two, usually staying on the left side.

But that's just a guess - could be the other as well.

And, of course, could be just about anything else.

This is just best guess based on experience.

Good luck!

Bobby
http://www.coppelltvrepair.com

Posted on Jan 23, 2010

caroldon

Donald DCruz

  • 17130 Answers

SOURCE: PANASONIC TH-L32c20m When i

In most cases the standby light might blink with different rapidity to indicate a fault relevant to the processor. It is possible that most of these indicate that there are errors in the processing section . Since there is a possible short or leak in the circuit the output driver section can take in huge current to trip the SMPS or from advice from the micro processor. Remove the power plugs and make sure that high voltage sections are discharged of the potential stored in capacitors. Look for visible signs of leak or of busted capacitors. Look for bulged capacitors or damaged components- burnt or busted. Use a multimeter to check the continuity or shorting in components, if so detach from circuit and test . If the voltage builds up and the set power ON and then shuts up then the suspected section must be checked in detail.

The processor must have the +5 voltage to the function properly , the +B and secondary voltages also must be checked to infer the fault. Trace with caution and in running through the signal path , circuit trail.

Check for tips to check the SMPS unit:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Thank you for using fixya.

Posted on Aug 18, 2011

SD Tech

SD Tech

  • 14553 Answers

SOURCE: Panasonic Viera 65 inch tv shut off, will not turn back on. Red light blinks 7 times.

Power supply or related to it.

Posted on May 26, 2012

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1 Answer

Back light cutting out, red light flashing on front


Hi, Mister,

Two things, first check if the power supply of the tv is in good order, second, has to be your inverter, this is the circuit of the backlight. Thank,s good Luck.

Serge.

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First thing, check the HDMI input and make sure it is firmly connected, same for the power cable, obviously. My Samsung goes similarly nuts if it detects no signal from the currently selected input but after 1-2 minutes it eventually stops and I can change the input source.

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My Panasonic TCP54G25 will not turn on. Red LED begins to blink ~3sec indefinitely.


The Y-sustain board should be suspected.
Visit this site 'Electro-help' for more details. All details about this fault have been described here in detail with illustrations. Type in "electronicshelponline.blogspot" into your browsers' search box, and click search. It is a blogspot site in English language. Pull up older posts there.

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The lamp light is blinking once every 5 seconds. The manual says that " Lamp will not light or light is abnormal"


HI,

Panasonic PT50LC13 lamp indicator blinks to tell you the lamp is faulty.

You need to replace the bulb or TY-LA1000 lamp assembly. This link displays all Panasonic TV Lamps and TV Bulbs. This page shows Panasonic lamp location and How to Replace TYLA1000 bulb. TY-LA1000 Bulb Replacement requires the use of a long Philips Screwdriver to reach screws within the lamp cage.

Unplug AC power before removing the lamp and re-install all doors, etc, correctly before starting the TV. Vacuum any visible dust or lint from air vents and lamp area. Do not used forced air to blow out dust, big problems may result.

The user's manual has a description of what the Blinking LED indicators mean.

easyab.jpg
Image of TYLA1000 lamp.


Robert

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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?

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The power light keeps flashing and the tv won't turn on. If you unplug for a minute and hit the power button it sound like it is coming on then it shuts off and the red power light flashes slowly. The TV is a Panisonic 1080i HDTV, about 6-7 years old.

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Hi,
3 times LED blinks in Panasonic PT-47WX42 shows problem with convergence out chips failure as this tv has two big black ICs STK392-110 as convergence output, replace them to fix tv problem.
Click Part Store to see an image of required chip and price info.
Local tv tech is recommended if you have no experience of working in tv circuit boards.
Thanks.


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did u cheak the input cables does it do it on dvd input as well as others ?

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