Question about Panasonic TH-42PD50U 42 in. Plasma EDTV

10 Answers

Panasonic th-42pz77u 42ed

Red power button flashes on and off, but no picture comes up.

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  • Zack391 Jan 13, 2008

    I am having the same problem as well the light flashes 7 times.

  • Panny42PZ77U Jan 21, 2008

    tonight - the same problem - rpower button's red light blinks 7x, pauses, then repeats. I've had the th-42pz77u for over three months. Tried unpluging the power cord to reset the set, but no joy. From other posts, this indicates a failed power supply.

  • fraggy Jan 27, 2008

    Have the exact same problem on my replacement set. Have just over a month. Yes, red power button blinks 7 times.

  • lizp Jan 31, 2008

    Yep, same as these guys. Purchased TV in December 2007, installed on Dec 17 2007. Today, Jan 30, tried to turn on TV, nothing happens, but red lights blinks 7 times, pauses, and blinks 7 times. We've tried unpluggin the TV for a while, but no go.

  • MILLENNA Feb 03, 2008

    BOUGHT THIS TV ONE WEEK BEFORE XMAS 07 AND TODAY THE SCREEN WENT BLACK WITH A POP SOUND. AND THE RED LIGHT BLINKS. JUST GREAT AS THE SUPER BOWL IS ONLY 13 HOURS AWAY. I DID BUY THE SEARS SERVICE PLAN, OR DO I HAVE TO CALL PANASONIC? I WILL HAVE TO WAIT UNTILL MONDAY TO CALL. AND NOW I HAVE NO TV , AND I JUST GOT AN HD BOX LAST WEEK.

    LAURIE

  • Anonymous Feb 08, 2008

    Have the same problem.....sounds like it's going to turn on....then power light flashes 7 times. Unplugging doesn't help. Called Panasonic and they're sending someone in 6 days. Have had the TV less than 3 months.

  • fraggy Feb 08, 2008

    Panasonic attempted to fix my set under the warranty, and the replacement card had the same problem. This is the third failure my set has experience with the exact same problem. Been weeks without set pending Panasonic warranty service. So the real solution even with Panasonic repairing is still in question.

  • Anonymous Feb 08, 2008

    same thing as everyone else. I have had my th-42pz77u since Dec 07. Watched tv just fine yesturday afternoon and last night it just wouldn't turn on. The light blinks 7 times then pauses and 7 more. Contoller doesn't do anything and very irratated that a $1300 tv breaks after 3 months and i have a RCA 32 inch tube that is 10 years old and works perfect

  • Anonymous Feb 08, 2008

    same thing as everyone else. I have had my th-42pz77u since Dec 07. Watched tv just fine yesturday afternoon and last night it just wouldn't turn on. The light blinks 7 times then pauses and 7 more. Contoller doesn't do anything and very irratated that a $1300 tv breaks after 3 months and i have a RCA 32 inch tube that is 10 years old and works perfect

  • Dozer028 Feb 08, 2008

    same thing as everyone else. I have had my th-42pz77u since Dec 07. Watched tv just fine yesturday afternoon and last night it just wouldn't turn on. The light blinks 7 times then pauses and 7 more. It wont even turn off unless I unplug it. Contoller doesn't do anything and very irratated that a $1300 tv breaks after 3 months and i have a RCA 32 inch tube that is 10 years old and works perfect

  • poolcue2 Feb 11, 2008

    no power only flashing red light ...very expensive and I am very upset

  • Anonymous Feb 14, 2008

    Same problem here. The red light is blinking 7 times.

    The tv is brand new (2 weeks)! .

    Waithing for the tech.

  • Anonymous Feb 14, 2008

    same problem-red light flashes but no picture-is there a fix?

  • lee812 Feb 21, 2008

    Same problem. 3 1/2 months old. Panasonic is not very helpful. I've already had a no show for repair appointment. Trying again tomorrow. The floor model at Sears was being repaired the day after I bought this when I went in to get a HDMI cable.

  • bouz Mar 06, 2008

    Mine just did the same thing. Did anyone have luck with the tv being fixed/

  • Anonymous Mar 26, 2008

    Panasonic Plasma 42 inch. 7 blinking lights. Called the Panasonic phone line. They set up a repair person to come within 2 days. He came and replaced several boards and it is fixed at no charge. I live San Deigo. Great job!!!!

  • toshi69 Apr 09, 2008

    same problen, no power or sound, 3 months old

    red light flashes 7 times

    called panasonic

    waiting for service tech........

  • Anonymous May 01, 2008

    Same here. Flashing red light. Seven times. Not a happy bunny. Will call Panasonic in the morning. 9 months old.

  • Anonymous Jun 15, 2008

    The power is on but no sight or sound.I unplugged the tv from the outlet for 45 minutes the tried it. The power indicator flashes 7 tines the pauses then repeats the same sequence again and again.

  • Anonymous Jun 25, 2008

    GRRRRRR - same problem. Purchased in Dec 2007 - now June 2008 - TV won't turn on. Fan starts, dim flash then nothing but a blinking red light. Unplugging and replugging in does NOT help.



    VERY annoyed.

  • Anonymous Jul 14, 2008

    same problem

    was ok last night, can't turn on this morning. 7 months old

  • kitkatnascar Aug 13, 2008

    I will never by Panasonic again or shop at leons again unless I get much better servie this time than I did last.

    Bought our TV dec 26 , 2008, this is our second time it has broken down, not impressed and told Panasonic and leons, if i don't get better service this time, this small community is going to hear about it, disgusted with both of them and as I said, no better service this time, they will be sorry about my advertising about both Leons and panasonic., Very frustrated.

  • Anonymous Sep 03, 2008

    blinking 7 times the power button



  • gbkim Dec 07, 2008

    7 Blinking lights on TH-42PZ77U, won't turn on. Bought 2-1-08, used infrequently, should have used more so it would have broken earlier since it looks like this is a very common problem.

  • ty83 Dec 13, 2008

    tv just went off one day, now when i try and turn it back on, the red light flashes and the screen doesn't turn on

  • Anonymous Mar 13, 2014

    need to install digital dg board on panasonic th-42pz77u

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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.

Posted on Apr 06, 2008

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I purchased a PZ77U and in November 07. I watched tv last night and worked fine. Turned it on this morning and it would not come on and the red power light is blinking 7 times. Called Panasonic and they will have a repair guy out on tuesday. UGH!!! Here is a link that explains the blinks if you get them.... http://www.avsforum.com/avs-vb/showpost.php?p=13057627&postcount=8421 Hopefully this gets fixed and doesn't happen again. Stupid electronics!!!!!

Posted on Mar 01, 2008

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There is a guy over at circuitsquad dot com that fixes these boards. This guy is really good and he only charge $110.00 including free shipping both ways. You can call him at 347-831-6372

Posted on Aug 16, 2012

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We have a Panasonic Hi Def TV Model #TH-42PZ77U. We have same problem w/blinking and not picture. Can't use DVD or VCR even as screen is black, but we have 10 blinks, not 7. Is there anything you can suggest? Husband has Alzheimers and I have cancer and we're old, so this is just what I need! It's no longer under warranty but has been very gently used. Would it be cheaper to order part and then ask someone to install or are there any hot buttons, so to speak, to say to Panasonic or Sears (where purchased) to get them to do it at a lower price since there seems to be slew of problems w/these boards.

Posted on Nov 23, 2009

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I had the same problem. I called the 'authorized repair shop' and they came out, picked up the TV and fixed it. After it was fixed, it never happened again.
It's still one of the most awesome TV's on the market, so I'm cool with it.   Turns out there's a specific board that was built into it that needs to be replaced. Seems to me like they should do a recall on it to have that board repaired, but they didn't because it doesn't doesn't seem to happen to everybody.

Posted on Dec 15, 2008

Panasonic plasma concierge service guy switched board out saying it was the scan board
still took to shop
1 week later tv is back and working great
impressed with panasonic service
had for a few weeks now no problems

Posted on Mar 04, 2008

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Bought TH42PZ77U panasonic 1st of nov.07 from sears.
Played 4 weeks. Turned on, no screen, red light flashes 7 times.over two weeks waiting for board to repair.
Played 2 months, same thing.Panasonic told tech. new board
also needed software up date. We'll see.

Posted on Feb 16, 2008

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TXNSC1NZTU (SU CARD), TXNSD1NZTU (SD CARD) and TXNSS1NZTU (SS card) ordered on 24 Jan buy BestBuy tech. Hour after Super Super Bowl, automated message indicating unknown delay in delivery of the cards. (Ouch!) Has anyone else with this failure had luck (or not) with this repair?

Posted on Feb 09, 2008

  • Panny42PZ77U Mar 01, 2008

    Plasma finally repaired 5 weeks after failure. One large board with two large heat sinks running vertical was replaced. At first power up TV came up instantly. No adjustments or alignments necessary. BB techs great; BB service worst ever - WORST! Consider purchasing extended warantee through Panasonic vice a store like BB.

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Ditto here. Bought the PZ77U 11/07
today, 2/9/08 blinking light 7 times no picture. Panasonic sending someone out in 3 days "he can/will fix it" is all I got, she seemed to recognize the "7 blinking light" problem....

Posted on Feb 09, 2008

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You Guys need to contact a Professional, according to Panasonic Tech Support the problem resides on one of five boards. Its a scan voltage problem.

Posted on Jan 26, 2008

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1 Answer

Panasonic th-42pz77u power light flashes ten times ? no pic or sound


This is referred to as the "10 blinks of death" and is the result of a power supply issue. Contact your local TV repair shop for repair pricing.

Mar 01, 2011 | Panasonic TH-42PZ77U TV

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I have a Panasonic Viera TH-42PZ77U, when I try to power it up it wll click as if it was going start and about 2 sec. later it ckicks again and the red light by the power switch flashes


Something inside has failed.
The flashing is a code for the repair engineer to tell him/her what is wrong.

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Feb 09, 2011 | Panasonic Viera TH-42PZ80U Plasma TV

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Panasonic model th42pz77u no pic, no sound, blinking red light ten times


9.2. Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the
defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
26
TH-42PZ77U:
There are different patterns for blinking light...
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Aug 16, 2010 | Panasonic TH-42PZ77U TV

2 Answers

Panasonic th-42pz77u has no picture.power light (red) flashes 7 times


seven blinks on this model is the SC board. it will need a new SC board and the software update for the new board. usually only authorized servicers have the software need to do the upgrade. but if you were to contact panasonic then they might be able to have it fixed for you for free since this was a defect in manufacturing. of course this depends on how long you have had the tv.

Dec 24, 2009 | Panasonic TH-42PZ77U TV

1 Answer

TURNS ON THEN OFF, RED LIGHT BLINKS 7X


replace sc board and do firmware update or problem will come back!

Oct 24, 2009 | Panasonic TH-42PZ77U TV

1 Answer

(panasonic TH-42PZ77U plasma) the tv will power on but before the picture comes up it powers back off. Red power light is flashing.


in protective mode the tv does not turn on and light is blinking, typically we must proceed by elimination as some faulty sections are preventing the tv to switch on. unplug the output power connectors from the power supply until the latter stop clicking. if it is still clicking after every of the output rail have been disconnected, then the power supply itself is faulty.

hope this helps!

Mar 21, 2009 | Panasonic TH-42PZ77U TV

2 Answers

Panasonic th-42pz77u 42ed


in protective mode the tv does not turn on and light is blinking, typically we must proceed by elimination as some faulty sections are preventing the tv to switch on. unplug the output power connectors from the power supply until the latter stop clicking. if it is still clicking after every of the output rail have been disconnected, then the power supply itself is faulty.

but anyway 3 circuit boards seems a lot to be replaced in a row.

hope this helps!

Mar 20, 2009 | Panasonic TH-42PZ77U TV

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