TV

Facing TV Problems? Ask a TV Technician.

Ask an Expert,
Get an Answer ASAP!

TV
This answer was rated:

my hd tv now has very dark images on screen

my hd tv now has very dark images on screen
Ask Your Own TV Question
Answered in 5 minutes by:
6/24/2013
Aric
Aric, Technician
Category: TV
Satisfied Customers: 45,785
Experience: 15+ years in the field. Owner of AV Installation, OEM and Repair company
Verified
Hello and thank you for the question.

Did you actually measure to see if the 24 volts from, the power supply is present at the inverters?

Basically, there are two things left that could cause this problem- the power supply board, or the LCD panel itself. Let me know if the supply voltage at the inverters is present. Also, if the inverters are buzzing while the set is turned on.
Ask Your Own TV Question
Customer reply replied 4 years ago


The inverters are buzzing with set on. I did not check for power at the inverters. Where do i check for the 24 volts at?

Thanks for the reply. If they're buzzing then chances are they're working, which means the voltage to the inverters is present. If you're still not getting any backlight on the screen, then your LCD panel's internal backlighting is what's at fault- and this is not repairable as the cost fo a panel is almost as much as the TV was when new.

I know this is not the answer you'd hoped for, but the inverters buzzing indicates they're getting power, however, if you want to double check, you'd use a multi meter and probe the inverter connector for 24 volts DC.

As it stands now though, the problem actually seems like a bad panel to me.
Ask Your Own TV Question
Customer reply replied 4 years ago


Does it mean anything that the board has a green LED light on? I do have some lighting but its very dark. You can hardly read the menu, etc. So this is a bad main board or is the LCD panel a different part? Thanks

Not a bad main board, I described exactly what the causes are above. What board has a green light on it?
Ask Your Own TV Question
Customer reply replied 4 years ago


The main board just above the power supply board has a green light on when you plug it in.

Okay, that is perfectly normal.
Ask Your Own TV Question
Customer reply replied 4 years ago


ok, so it needs a new LCD panel?

I had stated above that you need to probe the voltages on the backlight inverter connector and see if there is 24 volts DC anywhere on that plug. If there is voltage present, and your inverters are buzzing- meaning there is power, then the ONLY other thing that is responsible for lighting the display panel, is the display panel itself which is more than the TV is worth to replace.
Aric
Aric, Technician
Category: TV
Satisfied Customers: 45,785
Experience: 15+ years in the field. Owner of AV Installation, OEM and Repair company
Verified
Aric and 87 other TV Specialists are ready to help you
Ask your own question now
Ask Aric Your Own Question
Aric
Aric
Aric, Technician
Category: TV
Satisfied Customers: 45,785
45,785 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
I have a TV Model LCD-24xXR10F. The Screen Saver has come on
I have a TV Model LCD-24xXR10F. The Screen Saver has come on so I need to disable it … read more
Richard
Richard
IT Manager
IT Manager, Consultant
3,275 satisfied customers
What does / did the controller look like? Sony Bravia LCD
The quick Setup Guide (the only thing that I can find) says 2009 … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,497 satisfied customers
I have inherited a grundig Freeview digital TFT lcd tv and
I have inherited a grundig Freeview digital TFT lcd tv and need an appriopriate indoor aerial. My mother previously had it on a main outdoor aerial but this is not possible in our house. Could you ple… read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
I have a samsung lcd, model number ln40b530p7nxza and serial
I have a samsung lcd, model number ln40b530p7nxza and serial number b4x53css505489e and version is cno2. When i turn it on the picture is fine then in about 5-10 seconds, the screen fades almost to a … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,497 satisfied customers
Need power cord for my Philips lcd tv model #20pf5120 serial
need power cord for my Philips lcd tv model #20pf5120 serial #bz1a0617186360 … read more
Aric
Aric
Technician
45,785 satisfied customers
My Sharp Aquos 40 inch LED LCD TV LC40LE700X purchased
my Sharp Aquos 40 inch LED LCD TV LC40LE700X purchased January 2010 - going great guns! - can I get captions on it - as my hearing is starting to fail??? - thanks Jean.... … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
I have a TC-L47E50 LCD tv that won't power on. The power
I have a TC-L47E50 LCD tv that won't power on. The power light is blinking 10 times. … read more
Electrotech2017
Electrotech2017
Audio and Video Technician
Vocational, Technical or Trade School
102 satisfied customers
Samsung LNS4095 LCD TV. The screen just went black. It
Samsung LNS4095 LCD TV. The screen just went black. It appears that a light comes on but I have n picture … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
I have a LG TV that measures 35" side to side and probably
I have a LG TV that measures 35" side to side and probably 38" diagonally. … read more
Jack
Jack
technician
factory trained engineer
2,159 satisfied customers
I need a sharp tv LC26DV22U LCD HDTV /w built in DVDplayer/
I need a sharp tv LC26DV22U LCD HDTV /w built in DVDplayer/ LCDTV … read more
Jack
Jack
technician
factory trained engineer
2,159 satisfied customers
No low voltage on the power board. LG 50" lcd. All sources,
all sources, the red light comes on and I removed the board after checking the cable connection to the main board, no 12v or 24v out put … read more
Jack
Jack
technician
factory trained engineer
2,159 satisfied customers
My Haier Lcd tv will not turn on. There is no power light at
My Haier Lcd tv will not turn on. There is no power light at all even with the tv pluged in.… read more
Tim Nolan
Tim Nolan
TV Repair Center Owner
Associate Degree
17,254 satisfied customers
The TV works fine however, the inside measurment of the
The TV works fine however, the inside measurment of the screen is 15 inches but the pictture top to bottom is only 12 inches. The side to side measure is ok as it reaces right to the frame edges. … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
It is an LCD from 2008 or so. It is zoomed in and I cannot
It is an LCD from 2008 or so. It is zoomed in and I cannot get it right … read more
Richard
Richard
IT Manager
IT Manager, Consultant
3,275 satisfied customers
It simply will not turn on. Insignia lcd. this is the first
insignia lcd. this is the first time but it has been out for awhile. I'm just now getting to it. … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
Looking for 55UH8500 LCD panel replacement instructions. ^^
Looking for 55UH8500 LCD panel replacement instructions … read more
Suhasini Velu
Suhasini Velu
Bachelor of Engineering
142 satisfied customers
Panasonic lcd. darker shadow over center of screen.
Panasonic lcd. darker shadow over center of screen … read more
Electrotech2017
Electrotech2017
Audio and Video Technician
Vocational, Technical or Trade School
102 satisfied customers
I have a toshiba 52xv648u LCD tv that wont turn on. No this
Hi i have a toshiba 52xv648u LCD tv that wont turn on … read more
p0llinate
p0llinate
Bachelors of Science
14 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