TV

Facing TV Problems? Ask a TV Technician.

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

I have no signal, but just a blinking red light which blinks…

I have no signal...

I have no signal, but just a blinking red light which blinks 7 times .

Technician's Assistant: What device or product does this involve?

42" Panasonic Flat Screen Plasma, TH-42PZ80U.

Technician's Assistant: What Panasonic model do you have? How old is it?

Model # TH-42PZ80U. 10 Years+

Technician's Assistant: Does the TV menu work? Do you have the same problem on all sources/inputs?

Nothing Works. It was fine when I turned it off last night. All Sources work but obviously doesn't show up on screen. Red light blinks seven times.

Technician's Assistant: Anything else you want the TV Expert to know before I connect you?

Cable Box Shows Stations, but doesn't transfer to screen.

Show More
Show Less
Ask Your Own TV Question
Answered in 5 minutes by:
6/28/2018
Nathan
Nathan, Installer
Category: TV
Satisfied Customers: 31,434
Experience: Custom home theater installer, authorized dealer top brands.
Verified

Hi, I'm Nathan.
Sorry to hear that you're having trouble, but I'll do my best to help you.

Ask Your Own TV Question

Unfortunately, the issues you are experiencing are symptomatic of an internal hardware defect, meaning a faulty power supply or main/control board, though there are many possible failure points. This issue could be a manufacturing defect, but is also often caused by a power event (shock/surge, prolonged over/under voltage condition, etc).

This could also be the result of age related wear and tear; as a 2008 model tv, that type of failure wouldn’t be surprising. This tv is double its service life at this point, and plasma technology is long obsolete.

There is one step you can take here, both as a possible fix, as well as a diagnostic evaluation:
1) Unplug the power cord from the outlet

2) Wait at least 1 hour (60+ Minutes)

3) Press and hold the power button (on the set, not the remote) for 60 seconds
4) Keep holding power button while plugging back in, and for another 60 seconds after. When plugging back in, go directly to the wall outlet, bypassing any power strips or surge protectors.

If this reset process does not work, it would unfortunately confirm an internal hardware failure.

This is something that would require repairs to correct; if you're thinking about a do it yourself repair, you'll need to be comfortable and skilled with electronics repairs, which could include dismantling the set (removing the back panel of the tv), diagnostics testing with a multimeter, changing out boards as needed, and possibly desoldering/removing and soldering/replacing individual components.

If you’re considering repair at a local shop, you’ll find a typical repair to be around $400 for diagnostics, parts, and labor.

For a tv of this size/age however, replacement will make more sense. You can get a brand new 4k LED tv with a fresh warranty in the $300 range.

I can help you with finding parts, finding a repair shop, or recommending replacement options, if desired.

My apologies for the news,

Nathan

Nathan
Nathan, Installer
Category: TV
Satisfied Customers: 31,434
Experience: Custom home theater installer, authorized dealer top brands.
Verified
Nathan and 87 other TV Specialists are ready to help you
Ask your own question now
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a tv technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Nathan Your Own Question
Nathan
Nathan
Nathan, Installer
Category: TV
Satisfied Customers: 31,434
31,434 Satisfied Customers
Experience: Custom home theater installer, authorized dealer top brands.

Nathan is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I'm screaming your praises!! WOW! I plugged my TV in and bammo! The picture came on bright and beautiful. What a relief! YOU saved me some money and headache.

VMUnited States

I love this site! $9 instead of a repairman or new/used frig can't be beaten. This older woman will worry less now that she knows about this site. Bless you all.

WindyUSA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

< Previous | Next >

Meet the Experts:

Louie

Louie

Technician

3,022 satisfied customers

25+ yrs. experience in the field and 5+ yrs. online, down to component level.

Rod

Rod

TV & Communications Sys Repair

2,355 satisfied customers

FCC Commercial License, Previous owner of Electronics Repair shop, 40+ years in electronic systems.

Steven

Steven

Technician

1,457 satisfied customers

Ma. Master Technician Lic. Authorized Warranty Support.

euro-pro llc

euro-pro llc

Technician

1,128 satisfied customers

20 years in TV repair,certified by all major brands- Sony,Samsung, LG,Toshiba, Panasonic, RCA,

Daniel

Daniel

Electrical Engineer

1,072 satisfied customers

BSEE (Electrical Engineer), 10+ years electronic design experience ,chip, board, component expert

Conrad

Conrad

Technician

946 satisfied customers

Training on many types of consumer electronics, training on Sony Samsung and JVC

Neil

Neil

Technician

803 satisfied customers

More than 10 years experience repairing TV's and electronics equipment.

< Previous | Next >

Related TV Questions
Blinking red light and wont turn on. Panasonic viera and no
panasonic viera and no it was working five minutes ago … read more
Aric
Aric
Owner/Operator of a custom AV company
Run A/V and repair business for over
13,668 satisfied customers
I have a Pnasonic TH-42PZ80U TV - thepower light keeps
I have a Pnasonic TH-42PZ80U TV - thepower light keeps blinking - but the TV doesn't come on … read more
Aric
Aric
Owner/Operator of a custom AV company
Run A/V and repair business for over
13,668 satisfied customers
My tv has deprogrammed itself, not sure model, its a flat
not sure model, its a flat screen--maybe 6 yrs old … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,507 satisfied customers
Panasonic 42" plasma tv, model TH-42PZ700U, seven blinking
Panasonic 42" plasma tv, model TH-42PZ700U, seven blinking lights...disconnected SU & SC boards...now six blinks...SC board to replace?… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,507 satisfied customers
Good evening I have a 42" Panasonic flat screen tv model number:
Good evening I have a 42" Panasonic flat screen tv model number: TH-37PX60U When it is turned on it blinks (red light) 7 times and shuts down. What do I need to do to rectify this problem?… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,507 satisfied customers
I was reading your response in "Panasonic 42" plasma tv, model
I was reading your response in "Panasonic 42" plasma tv, model TH-42PZ700U, seven blinking Resolved Question: Panasonic 42" plasma tv, model TH-42PZ700U, seven blinking led lights on power up, no pict… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,507 satisfied customers
Hi PANASONCI PLASMA MODEL TH-42PZ80U. IT WILL POWER UP AND
Hi PANASONCI PLASMA MODEL TH-42PZ80U. IT WILL POWER UP AND POWER OFF, WITH RED LIGHT. BLACK SCREEN. ANY SUGGESTION… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,507 satisfied customers
My parents Panasonic Viera will not turn on. When they try
My parents' Panasonic Viera will not turn on. When they try to turn it on, the red LED light blinks 7 times, then pauses, then blinks another 7 times, and continues this way. But they can't get the TV… read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
345 satisfied customers
I have a panasonic plasma tv model TH-42PZ80U when the power
I have a panasonic plasma tv model TH-42PZ80U when the power went out and then come back on my tv stopped working properly. The power button blinks a few times and tv will not turn on, How is this pro… read more
Steve
Steve
Chief Engineer
9 satisfied customers
We have just had a thunderstorm and lost the electricity. After
We have just had a thunderstorm and lost the electricity. After electricity was restored my plasma Viera TV would not work. I unplugged the TV and restarted it. It comes on for about 1-2 seconds and t… read more
Rod
Rod
TV & Communications Sys Repair
Graduate Certificate
2,355 satisfied customers
Panasonic Viera Plasma 42 Model # XXXXX - screen went
Panasonic Viera Plasma 42" Model # XXXXX - screen went blank last night. I tried to run the TV on but the red power light comes on, and then just blinks. It is connected to a DVR.… read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
345 satisfied customers
I own a Panasonic Plasma model No. TH-42PZ77U. Here is the
I own a Panasonic Plasma model No. TH-42PZ77U. Here is the problem. last night I turned off my set at 745 pm, I returned to the set at about 9 pm. All I got was a dark screen, and the red power light … read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
345 satisfied customers
Panasonic Plasma SS card Problem TH-42PZ80U Hi, Looks like
Panasonic Plasma SS card Problem TH-42PZ80U Hi, Looks like I need to replace SS card in my 42'' Panasonic Plasma. ( Good old 10 blinks problem). Its been diagnozed ( other question on Justanswer.com) … read more
Allen
Allen
Broadcast Consultant
Associate Degree
676 satisfied customers
I have a panasonic 42 1080i plasma tv, come home this evening,
I have a panasonic 42" 1080i plasma tv, come home this evening, and there is no picture on screen. Turn TV on at wall, and normally the LED blinks green for a few seconds, and then it turns on - now t… read more
Expert-Repair
Expert-Repair
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
11 satisfied customers
my panasonic hd plasma th-50px75u tv shut completely off on
my panasonic hd plasma th-50px75u tv shut completely off on it's own last night. there was no message on the screen first. a red light is blinking on the tv but i could not turn the tv back on either … read more
Conrad
Conrad
Technician
Vocational, Technical or Trade Scho
946 satisfied customers
42 Panasonic Plasma TV Model TH-42PZ77U someone was fooling
42" Panasonic Plasma TV Model TH-42PZ77U someone was fooling with the remote. Now the red power light flashes on and off no pic. I have tried unplugging TV, checked all connections etc...I need help..… read more
Jeff the TV Guy
Jeff the TV Guy
Service Technician
Vocational, Technical or Trade Scho
739 satisfied customers
my 40 in flat screen high definition red light blinks when
my 40 in flat screen high definition red light blinks when i press power it clicks but it dont turn on but the light keeps blinking… read more
PramitP
PramitP
Self-Employed
Diploma
9 satisfied customers
I have lost picture on my TH-42PZ700U. The red power blinks
I have lost picture on my TH-42PZ700U. The red power blinks seven times then pauses, I run this with Direct tv. I have unplugged and waited and tried to reset on the direct tv box. Direct tv is HD… read more
Ron K.
Ron K.
Repair Tech- Owner
Bachelor\u0027s Degree
301 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x