TV

Facing TV Problems? Ask a TV Technician.

Ask an Expert,
Get an Answer ASAP!

TV
This answer was rated:

2009 42"Panasonic plasma display powers on and goes to

2009 42"Panasonic plasma display powers...
2009 42"Panasonic plasma display powers on and goes to standby after 30 seconds. Buttons on unit or remote do not work as should.
JA: What's the model number of your TV? How old is it?
Customer: july 2008, TH-42PR11UK
JA: Does the TV menu work? Do you have the same problem on all sources/inputs?
Customer: This is a display. Has HDMI and Video inputs only. It has expansion slots for tuner but none installed. Menu button or any other button doesn't work as it should. Running finger across all of them will bring up picture but as I said, after 30 seconds it shuts down! It can be restarted again instantly but same result. It is sticking by the 30 second rule...
JA: How long has this been an issue? What happened right before this popped up?
Customer: Not familiar with history. A friend gave it to me and told me it had black screen.
JA: Anything else you want the Expert to know before I connect you?
Customer: That pretty much says it. It work when it wants
Show More
Show Less
Ask Your Own TV Question
Answered in 2 hours by:
10/8/2017
Nathan
Nathan, Installer
Category: TV
Satisfied Customers: 26,921
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. Please give me a few moments to review and reply.

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, that type of failure wouldn’t be surprising. This monitor is about 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 $300 for diagnostics, parts, and labor.

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

Ask Your Own TV Question
Customer reply replied 2 months ago
Nathan, Thanks for your confirmation of what I already knew... I cannot locate a service manual for this unit. It seems that like I said, that the 30 second rule is the constant in this problem. I can run finger across all buttons on the unit and the input signal comes on with a beautiful picture and sound for 30 seconds and then shuts down, going into standby mode. The next time I do this the video may have sound or NOT. It always seems to power up without delay, but shuts off in 30 seconds!! Is this logic board issue?
Customer reply replied 2 months ago
No thank you Nathan. I was hoping that you had dealt with this problem before with your expertise. The boards are all in perfect condition, no discoloration, and the caps are all good. I can buy the parts and risk it instead of spending 26 bucks to be told the same thing. If you don't know, just say so.

Thank you for trying, the service documentation on the commercial monitors is scarce and plasmas are complex creatures there is not one specific identifiable source for these types of issues. So I can't tell you something with certainty, here or on the phone without having it in front of me, and even then it is more a process of elimination. There are typically no distinct visual signs and even bad caps are not always visible they need to actually be tested, but caps would be more of a startup problem than a shut down problem. Based on what you're describing though it is most likely the main board. Do you see any flashing light on the front after it shuts down?

Note I'm not asking you for a call, that is an ad from the site.

Ask Your Own TV Question
Customer reply replied 2 months ago
Screen blacks out and goes into standby power. No flashing lights only orange color for standby notification. Its frustrating.. It will not stay on long enough to get into the screens to determine what functions are set at. If you were to guess, would you say the main board or the power board?

I would say the main board, if it was a power board issue it more likely would not come on in the first place, I would expect this to be bad eeprom on the main board.

Ask Your Own TV Question
Customer reply replied 2 months ago
That's what I was thinking, but I wanted a second opinion from someone who may know instead of asking my neighbor and hear about everything else!. I'll get a board off ebay and give it a shot. There's a 5 second rule for food on the floor, but no understandable rule for 30 second shutdown. Thanks for listening to me... I'll let you know what it is.
You’re very welcome and Best of luck to you!
Nathan
Nathan, Installer
Category: TV
Satisfied Customers: 26,921
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
Ask Nathan Your Own Question
Nathan
Nathan
Nathan, Installer
Category: TV
Satisfied Customers: 26,921
26,921 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

2,940 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

1,429 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
I have a 60" LG digital LED TV. During normal operation
I have a 60" LG digital LED TV. During normal operation tonight there was a sudden loud noise (like a gunshot) and then it stopped working (no sound, no picture, no power). … read more
Nathan
Nathan
Installer
26,921 satisfied customers
What is the 4 digit number to get stations? Led tv series4
I have had this tv for11years and it hever been set up correctly … read more
Nathan
Nathan
Installer
26,921 satisfied customers
It keeps switching from hdmi 1 to hdmi 3 without me doing
it keeps switching from hdmi 1 to hdmi 3 without me doing anything … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,495 satisfied customers
Have a hitachi le48m4s9 led tv and I want to turn off the
have a hitachi le48m4s9 led tv and I want to turn off the accent light that comes on when you turn the tv off.… read more
Nathan
Nathan
Installer
26,921 satisfied customers
Lg 42LN5400UA led tv, Sound but not picture. Began diags and
Lg 42LN5400UA led tv, Sound but not picture. Began diags and found no leds lighting up. Replaced led strips and and now have screen lighting up, but still sound and no picture. Have cleaned contacts o… read more
Jack
Jack
technician
factory trained engineer
2,159 satisfied customers
MY LG LED TV screen is flashing. Sound is good. Doesn't
Hello! MY LG LED TV screen is flashing. Sound is good. Doesn't matter if I chnage channels. I unplugged everything and plugged back in. Help! … read more
Aric
Aric
Owner/Operator of a custom AV company
Run A/V and repair business for over
13,651 satisfied customers
Samsung cannot get it off of store mode to home mode. LED TV
Samsung cannot get it off of store mode to home mode … read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
320 satisfied customers
John,panasonic plasma tv th-42px600a hdmi in pc does not
John,panasonic plasma tv th-42px600a hdmi in pc does not work … read more
Richard
Richard
IT Manager
IT Manager, Consultant
3,254 satisfied customers
Hdmi port not working well. Pioneer plasma model pop4271HD
We would move the cable and it would work for a while then go out, so we would move the cable again and it would be ok for a while again. But now it is very hard to get to work. … read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
320 satisfied customers
My TV will not stay on HDMI 1. It will go to HDMI 2 or I can
My TV will not stay on HDMI 1. It will go to HDMI 2 or I can move it to HDMI 3. But I can't get a picture on HDMI 1. … read more
Nathan
Nathan
Installer
26,921 satisfied customers
Getting message INPUT SOURCE HDMI! HDMI 2 and. MSG shows up
Getting message INPUT SOURCE HDMI ! HDMI 2 and JA: What's the exact make and model of your television? And have you done any troubleshooting yourself? Customer: MSG shows up on screen INPUT SOURCE HDM… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,495 satisfied customers
My Dell Plasma Tv won't resogniize The HDMI signal. The Tv
My Dell Plasma Tv won't resogniize The HDMI signal. The Tv reads no video input signal. What is the problem?Did you forget me and my Tv problem?… read more
Tim Nolan
Tim Nolan
TV Repair Center Owner
Associate Degree
17,254 satisfied customers
New RCA 16 inch LED TV. The problem is "ghosting" around
New RCA 16 inch LED TV. The problem is "ghosting" around head of TV images. Are there adjustments that I can make on panel controls ? … read more
Nathan
Nathan
Installer
26,921 satisfied customers
My Hitachi 60 "LED TV went dark. Is this fatal? 8 year.
No and yes. Sound works no picture on any input. Menu choices won't show. … read more
Steven
Steven
Technician
Vocational, Technical or Trade Scho
1,429 satisfied customers
I have a Pioneer Plasma Pro-1130HD and hdmi ports 1 & 3
I have a Pioneer Plasma Pro-1130HD and hdmi ports 1 & 3 stopped working … read more
Jack
Jack
technician
factory trained engineer
2,159 satisfied customers
HDMI ports not working, It's a 50' Panasonic Plasma Viera,
Short power outage, cable provider had a 4 day outage about 5 weeks ago … read more
Mike G.
Mike G.
Television Repair Technician
Vocational, Technical or Trade Scho
1,672 satisfied customers
Tv says it's on but no picture, HDMI etc 50 inch plasma, No
No picture hooked up to direct tv etc, worked forever … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,495 satisfied customers
I have series 5 plasma tv. screen shows "HDMI" then "no
I have series 5 plasma tv. screen shows "HDMI" then "no signal. … read more
Mike G.
Mike G.
Television Repair Technician
Vocational, Technical or Trade Scho
1,672 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