TV

Facing TV Problems? Ask a TV Technician.

Ask an Expert,
Get an Answer ASAP!

TV

I have a Samsung hl61a750a1fxza tv that won't turn on. Press

Customer Question
I have a Samsung hl61a750a1fxza...
I have a Samsung hl61a750a1fxza tv that won't turn on. Press the remote and the led lights blink but TV doesn't turn on. Cn801 pins 2,4,6 have 15.99 volts. Cn800 has 167 on both the +\- If I measure voltage at the led connection I get 15.2/14.9. The voltage drops after 10-15 seconds
JA: How old is your Samsung, and have you tried unplugging it and leaving it off for a few hours?
Customer: Not sure the age. I tried unplugging it early on when the problem first started. It didn't seem to help. The tv would turn on if you kept trying----10 -15 minutes but now it doesn't even do that.
JA: What troubleshooting have you tried?
Customer: Incoming voltage to cn801 , cn800 and led connections
JA: The TV expert can solve this for you. Anything else you want him to know before I connect you two?
Customer: No
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the TV Technician about your situation and then connect you two.
Submitted: 1 year ago.Category: TV
Show More
Show Less
Ask Your Own TV Question
Answered in 9 hours by:
7/12/2016
TV Technician: Pete, Electronic Engineer replied 1 year ago
Pete
Pete, Electronic Engineer
Category: TV
Satisfied Customers: 18,968
Experience: Over 16 years of experience installing and repairing electronics.
Verified

Hi there

Ask Your Own TV Question
Customer reply replied 1 year ago
I'm not sure what to check next? The TV used to turn on if you waited long enough. How much voltage should I have at the led connection? Is there another board I should check? Can the led's go bad all at once?
TV Technician: Pete, Electronic Engineer replied 1 year ago

Which lights are blinking?

What color are they blinking?

Ask Your Own TV Question
Customer reply replied 1 year ago
The first light is on when the TV is plugged in---it's red
I Press the power button and the second light momentarily turns on---it's green
Then the third light flashes---it's green----until it tries to cycle,about 15 seconds.
After that all 3 blink-----red,green,green---until I unplug the TV
Customer reply replied 1 year ago
Any ideas?
TV Technician: Pete, Electronic Engineer replied 1 year ago

This sounds very like a faulty power supply board - can you try replacing it and let me know if the TV powers on normally again?

Ask Your Own TV Question
Customer reply replied 1 year ago
Isn't cn801 on the power supply board? Pins 2,4,6 have 15.99 volts. Isn't that enough ? Do they need to be a constant 16?
TV Technician: Pete, Electronic Engineer replied 1 year ago

Yes CN801 is on the PS board.

15.99V is sufficient.

Ask Your Own TV Question
Customer reply replied 1 year ago
What other out puts should I look at on that board? What should I check on the LED driver board?
TV Technician: Pete, Electronic Engineer replied 1 year ago

All outputs should be checked to ensure the PS board is functioning correctly.

The LED driver board is easily checked through its output - it either gives a display, or not.

Ask Your Own TV Question
Customer reply replied 1 year ago
What voltage should I get at the LED connection? I get about 15.5 on all 3 connections. I also checked the LED's to make they worked---they do. Don't LED's usually work of of lower voltage than 15.5?
TV Technician: Pete, Electronic Engineer replied 1 year ago

I cannot find the schematics for this particular set, so I'll check with the other techs if they can assist you further.

Ask Your Own TV Question
Customer reply replied 1 year ago
Anybody have any new ideas?
Customer reply replied 1 year ago
I'm just trying to se if there is a way I can test my LED driver. I seem to have the correct voltage to the driver. Is there something I should look at besides the LED driver. Can you view my emails to see what has already been checked? I just feel like I have been forgotten and I have a very large TV sitting on my kitchen table. Let me know if you need more information---thanks
Ask Pete Your Own Question
Pete
Pete
Pete, Electronic Engineer
Category: TV
Satisfied Customers: 18,968
18,968 Satisfied Customers
Experience: Over 16 years of experience installing and repairing electronics.

Pete 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 replaced the power board on Samsung PN59D550c1f and after
I replaced the power board on Samsung PN59D550c1f and after about a minute or two the tv shuts off then clicks back on then shuts off and wont turn back on until I unplug it and wait. The tv will do t… read more
Dan T.
Dan T.
Calibration and Repair Center Supervisor
Associate Degree
5,676 satisfied customers
I HAVE A SHARP 32" TV MODEL #LC 32D 43U THAT JUST STOPPED
I HAVE A SHARP 32" TV MODEL #LC 32D 43U THAT JUST STOPPED WORKING - IT SEEMS TO BE GETTING POWER EVERYWHERE EXCEPT AT THE POWER ON /OFF SWITCH - AT P151 CONNECTOR THE PART # LC-32D 43U . HAVE SAME MOD… read more
Dan T.
Dan T.
Calibration and Repair Center Supervisor
Associate Degree
5,676 satisfied customers
I have a 60 plasma lg screen turns on very dim snow then
I have a 60 plasma lg screen turns on very dim snow then turns to black screen then powers off all within 30 seconds..the red light goes out during whole time and it clicks then shuts off please help.… read more
Dan T.
Dan T.
Calibration and Repair Center Supervisor
Associate Degree
5,676 satisfied customers
This is a question for an expert on commerial cable TV
This is a question for an expert on commerial cable TV equipment: I am the Telecommunications Director for a University in Iowa. We have our out cable TV system. We get a bulk feed from Mediacom Cable… read more
Pete
Pete
Electronic Engineer
18,968 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
What is the aspect ratio for HDTV screens. I want to knowso
I want to knowso I can properly size a TV for a wall in our home. … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
Our tv just went blank. No power. It has a 24 v converter.
Our tv just went blank . No power. It has a 24 v converter. Could this be the problem? … read more
Jack
Jack
technician
factory trained engineer
2,159 satisfied customers
My lg 60pn5000 powers on, see ataic then shuts off. i hear
my lg 60pn5000 powers on, see ataic then shuts off. i hear the relay click when it powers on and off … read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
321 satisfied customers
From what I've read on the net, it seems the backlight
From what I've read on the net, it seems the backlight inverter board is bad on my Sanyo 41" but I can't seem to find it. I found an LED driver board, but I'm not sure if that is the same … read more
Aric
Aric
Owner/Operator of a custom AV company
Run A/V and repair business for over
13,652 satisfied customers
I have an LG 60pm6700 - worked fine last night, but no
I have an LG 60pm6700 - worked fine last night, but no picture with sounds this morning. I've tried my laptop as an input check, and still no picture. I read there is a fuse in it?… read more
Mike G.
Mike G.
Television Repair Technician
Vocational, Technical or Trade Scho
1,672 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
The power cord on my Magnavox smart series 32 in RG32GYWH
The power cord on my Phillips Magnavox smart series 32 in RG32GYWH was severed at the place where it connects to the TV so I thought it just needed to re wire the white and black wires to an extesion … read more
Ron
Ron
359 satisfied customers
I have a Soyo TV model number MT-SYTPT4227AB that doesn't
I have a Soyo TV model number MT-SYTPT4227AB that doesn't have power. When I hold the power button down and remove the power cord and then plug in again the green goes light comes on but the screen re… read more
Aric
Aric
Owner/Operator of a custom AV company
Run A/V and repair business for over
13,652 satisfied customers
I have a Insignia Coby model TFTV1091 and need to know how
Second opinion] I have a Insignia Coby model TFTV1091 and need to know how to charge the battery. I pluged it in for hours snd it did not charge, HELP. … read more
Russell H.
Russell H.
computer technology consultant
Vocational, Technical or Trade Scho
781 satisfied customers
Your question: "I have a Samsung HL61A750AIFXZA 61" LED DLP
Your question: "I have a Samsung HL61A750AIFXZA 61" LED DLP TV. The RGB LEDs do not power on. I have replaced ; the main power board, the sub power board , the LED driver board and the DMD board and t… read more
Electrotech2017
Electrotech2017
Audio and Video Technician
Vocational, Technical or Trade School
102 satisfied customers
I have a Samsung UN55H6300AFXZA version TH01. TV works with
I have a Samsung UN55H6300AFXZA version TH01. TV works with sound but no picture. I can see volume numbers on screen using flashlight. … read more
Electrotech2017
Electrotech2017
Audio and Video Technician
Vocational, Technical or Trade School
102 satisfied customers
Have power but no picture, 50PA5500-UAAUSLLHR, red light in
red light in lower left and faint glow. nothing else … read more
Mike G.
Mike G.
Television Repair Technician
Vocational, Technical or Trade Scho
1,672 satisfied customers
I have a Vizio XVT553SV with an Vizio light that illuminates
I have a Vizio XVT553SV with an amber Vizio light that illuminates on the front when plugged into the wall. It never flickers, but will not turn white when the power switch is pressed. Have performed … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,497 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