TV

Facing TV Problems? Ask a TV Technician.

Ask an Expert,
Get an Answer ASAP!

My tv has no picture or sound but the power lite works

Customer Question
My tv has no picture or sound but the power lite works
Submitted: 2 years ago.Category: TV
Ask Your Own TV Question
Answered in 4 minutes by:
6/17/2015
TV Technician: Aric, Technician replied 2 years ago
Aric
Aric, Technician
Category: TV
Satisfied Customers: 46,999
Experience: 15+ years in the field. Owner of AV Installation, OEM and Repair company
Verified
Hello and sorry you're having problems. I may be able to help, but I need to ask for more info.
1) How long have you owned the TV for and when did the problem occur?
2) Does the screen light up when the power button is pressed? Or does the green light and TV remain EXACTLY the same when power is pressed (no response at all)?
3) Additionally has any work ever been done on this TV?
Ask Your Own TV Question
Customer reply replied 2 years ago
I turned it on and it came on! It goes out after some random time and does not come back on.
Customer reply replied 2 years ago
Now the screen went black but there is sound
TV Technician: Aric, Technician replied 2 years ago
Thanks for the reply.
If the picture came right back on, it could be due to the cable box, HDMI cable, or the TV itself.
Was the screen still lit when the set was showing no picture and no sound?
If not, were you able to pull up MENU or change Input- or anything?
If not, then you have an intermittent fault in the TV- which isn't uncommon when parts start to fail.
If there was no response from power (no change in screen, no click no change in power light, etc.), then you're usually looking at needing the Mainboard replaced eventually. This is an average of $250 parts and labor.
If the set clicked on however, and nothing displayed on the screen- and no sound, then this is more in line with a power supply board fault occurring- and is around the same cost.
If you run into the issue again, or more frequently and it doesn't turn on- then you can use the link below to locate a tech in your area if you'd like:
www.tvrepairpros.com
Alternatively if you're a DIY type and have a multi-meter I can also help you perform your own repairs.
If you need further assistance let me know. Please do not forget to click a POSITIVE RATING before you go- as it's how I am credited for my work. You can follow up at any time, at no additional cost.
Ask Your Own TV Question
Customer reply replied 2 years ago
Now the screen is back. I hate intermittent problems!
TV Technician: Aric, Technician replied 2 years ago
I just saw that. Please see my post just above this one.
Ask Your Own TV Question
Customer reply replied 2 years ago
I am a dyi tech guy all my life. I downloaded the service manual for this tv. Is this what you were going to guide me through troubleshooting?
Customer reply replied 2 years ago
Yes, I have a multimeter
TV Technician: Aric, Technician replied 2 years ago
I don't use the service manual myself, but rather a meter and the test points on the power board as well as the symptoms.
Now you said there was sound and no picture:
1) Was the screen black as if the set were off?
2) If there was a slight glow (prime), would anything display (MENU, Input source, etc.)?
Ask Your Own TV Question
Customer reply replied 2 years ago
The TV is working now, but for how long?...
Yes, the screen was black as if it was off.
TV Technician: Aric, Technician replied 2 years ago
We have to grab those voltage readings (Va and Vs, as well as 15 volts and 5 volts DC) off the power board WHEN the TV is not working properly, but is plugged in and turned on.
What we can do initially, is check all capacitors on the power supply board for signs of bulges, swelling or leaking in the meantime. The test points for voltages are stamped on the power board.
Ask Your Own TV Question
Customer reply replied 2 years ago
It is only a matter of time before it happens again.
I will do the testing the next time this happens. I hope it is soon I find the solution!
TV Technician: Aric, Technician replied 2 years ago
It takes as long as it takes, once the unit shuts down, knowing what voltages are present, and which are not, are key in narrowing down the culprit further.
Ask Your Own TV Question
Customer reply replied 2 years ago
This can take some time. Conditionally, thanks.
TV Technician: Aric, Technician replied 2 years ago
You're welcome and I can understand that. I'll be signing off for the night soon (been on for about 9 hours today so far), but will be back on tomorrow afternoon (have a morning job to tackle).
Ask Your Own TV Question
Customer reply replied 2 years ago
Will I be able to test the board with the back off?
TV Technician: Aric, Technician replied 2 years ago
Yes, the back needs to be removed.
Ask Your Own TV Question
Customer reply replied 2 years ago
There are no interlocks for the power?
Customer reply replied 2 years ago
Yes, I know you have to take the back off...
Customer reply replied 2 years ago
I assume the back can come off and the will be able to be powered on. Thanks
TV Technician: Aric, Technician replied 2 years ago
I gotta run, like I said. Will be back tomorrow. I've opened the question in the meantime- others can help if able.
Ask Your Own TV Question
Customer reply replied 2 years ago
Have a good night
Customer reply replied 2 years ago
Now the lower half of the screen black.
TV Technician: Aric, Technician replied 2 years ago
I'm sorry for the delay, I've had other jobs to attend to. Now, yes the back can be removed and the set plugged in and powered on. Then you will set your meter to DC volts, ground the black probe to the metal frame of the TV, and use the red probe to test the points on the power board labeled Vs and Va. Let me know what you get please.
Ask Your Own TV Question
Was this answer helpful?
Ask Aric Your Own Question
Aric
Aric
Aric, Technician
Category: TV
Satisfied Customers: 46,999
46,999 Satisfied Customers
Experience: 15+ years in the field. Owner of AV Installation, OEM and Repair company

Aric 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

2,950 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
My Samsung TV has no sound or picture.
My Samsung HD LCD TV has no picture or sound. I was able to get it to work for about three minutes and then it shut off. It is not powered off just no picture or sound. My problem now is I have no ide… read more
Aric
Aric
Technician
46,999 satisfied customers
So my coby TV is always switching from HDMI to dvi,and Im
So my coby TV is always switching from HDMI to dvi,and I'm trying to connect my Acer aspire v5 via HDMI it always keeps on saying no signal help… read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
My Seiki tv is not working
My Seiki tv is not working… read more
Aric
Aric
Technician
46,999 satisfied customers
Need instruction for inserting the HDMI cable. Sorry, it is
The TV comes "ON" but has a display that indicates the missing HDMI cable … read more
Aric
Aric
Technician
46,999 satisfied customers
I hane no picture and no sound. Hdmi. Tv was working
tv was working normally and my wife started to watch a recorded program and screen went blank although it seems to have a dark blue tint… read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
341 satisfied customers
HDMI ports don't d. Hdmi ports don't seem to be working. But
we think it existed all along we didn't realize it till we moved the tv and tried to use a fire stick with it … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,506 satisfied customers
No picture or sound. Says there is no signal. HDMI is there.
No picture or sound. Says there is no signal. JA: Are there any HDMI cables or A/V jacks (red, yellow, and white cables) plugged into your TV? Customer: HDMI is there JA: Was there a power outage rece… read more
Jack
Jack
technician
factory trained engineer
2,163 satisfied customers
I use an HDMI cable to mirror this PC to my 49" HDMI TV,
I use an HDMI cable to mirror this PC to my 49" HDMI TV, works fine, but no audio. How to get the audio? what do I do? … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
The HDMI capability on all 3 HDMI outlets on my Vizio TV are
The HDMI capability on all 3 HDMI outlets on my Vizio TV are not working. What should i do? … read more
technicalcat
technicalcat
Computer Science
840 satisfied customers
HDMI cable is in the HDMI 1 position but not working.
HDMI cable is in the HDMI 1 position but not working. Something that says ViA is on … read more
Aric
Aric
Technician
46,999 satisfied customers
I purchased an HDMI cable along with an Apple HDMI to
I purchased an HDMI cable along with an Apple HDMI to Lighting adapter so I can view shows from my Ipad. It worked fine for a couple of days then all of the sudden it stopped working. I've tried unplu… read more
Richard
Richard
IT Manager
IT Manager, Consultant
3,413 satisfied customers
DVD not showing on any hdmi inputs but laptop with hdmi
DVD not showing on any hdmi inputs but laptop with hdmi cable works fine. … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,506 satisfied customers
Samsung TV won't turn on when the red light is on.
My Samsung 32" lcd tv won't turn on. The on-off switch has a small red light, but nothing happens when I push it. Also the remote is not successful. Can you help?… read more
Aric
Aric
Technician
46,999 satisfied customers
Problem installing Amazon fore stick. Need Help.
I received an Amazon fire stick for X'mas. I installed on to my 60 in Vizio TV that was purchased less than 4 months ago. Now after a few minutes, the TV powers itself off. If I unplug the fire stick … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
HDMI ports stopped working on 50" Panasonic 1080P Viera TV
My HDMI ports stopped working on my 50" Panasonic 1080P Viera TV, is there a way to reset them? Already Tried: Replaced my cable box to make sure that wasn't the problem. Hooked up the red, green blue… read more
euro-pro llc
euro-pro llc
Technician
Associate Degree
1,128 satisfied customers
My Sony Bravia is suddenly not picking up a signal into HDMI
My Sony Bravia is suddenly not picking up a signal into HDMI 2 and 3 inputs. Only HDMI 1 is working. I get a no signal message on the other 2.… read more
Hank Sullivan
Hank Sullivan
Associate Degree
265 satisfied customers
we were watching our led lg tv and then suddenly the screen
we were watching our led lg tv and then suddenly the screen went green and fuzzy… read more
Aric
Aric
Technician
46,999 satisfied customers
Have a TCL Roku TV that keeps turning itself off.
Have a TCL Roku TV that keeps turning itself off.… read more
Aric
Aric
Technician
46,999 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