TV

Facing TV Problems? Ask a TV Technician.

Ask an Expert,
Get an Answer ASAP!

Sound works not picture, i have taken off back to inspect…

Customer Question
Sound works not picture ...

Sound works not picture

Technician's Assistant: Are there any HDMI cables or A/V jacks (red, yellow, and white cables) plugged into your TV?

I have taken off back to inspect components

Technician's Assistant: Was there a power outage recently?

Seems two fuses in main power board are receiving too much volatage and third appears to have no voltage

Submitted: 4 months ago.Category: TV
Show More
Show Less
Ask Your Own TV Question
Answered in 1 minute by:
3/6/2018
TV Technician: Jack, Technician replied 4 months ago
Jack
Jack, Technician
Category: TV
Satisfied Customers: 11,343
Experience: 40 years experience as audio,video repair and installation tech
Verified

Hello, My name is ***** ***** I'll be helping you with this.

A few questions coming up and please note that there may be delays between replies if i have to gather various info ;
Also ,Could you please give me the model number written on the tv`s back cover ?

Ask Your Own TV Question
Customer reply replied 4 months ago
LG 60PZ750
TV Technician: Jack, Technician replied 4 months ago

Sorry then but this is nt what i thought and will opt out

You don`t have to do anything , your question will be reposted for other techs. to see and jump in.
Please just standby and someone should be with you shortly .

Ask Your Own TV Question
Customer reply replied 4 months ago
Ok thanks
TV Technician: Eldon, Technician replied 4 months ago
Eldon
Eldon, Technician
Category: TV
Satisfied Customers: 244
Experience: Engineer at Tech company
Verified

Hello and sorry to hear you're having trouble with your tv.

Do you see the screen lighting up/glowing at all?

Ask Your Own TV Question
Customer reply replied 4 months ago
No not at all
Customer reply replied 4 months ago
TV Technician: Eldon, Technician replied 4 months ago

Yes I know it is a plasma, just wanted to confirm if the panel is priming at all,

so this would typically indicate a bad Y sus board, did you check the fuses on it?

Ask Your Own TV Question
Customer reply replied 4 months ago
Ki don’t see any fuses on y sus
Customer reply replied 4 months ago
Wait yes 250
Customer reply replied 4 months ago
seems to work
Customer reply replied 4 months ago
But main power board has three fuses two seem to be putting out in excess of 250 v and a third 0 v
TV Technician: Eldon, Technician replied 4 months ago

Yes there should be a ceramic fuse there, 250v,

so if that fuse is ok, then it is another component on that ymain board as the most likely fault,

what are the power board outputs looking like? Check the voltages on all the psu output pins against the marked expected voltages there,

if they are ok, then the ysus would need to be replaced, or rather rebuilt as parts for this are no longer available.

Ask Your Own TV Question
Customer reply replied 4 months ago
Power board outputs seem to be reading correctly but the fuses are off as noted
TV Technician: Eldon, Technician replied 4 months ago

I'm not worried about those at this point, the other board isn't drawing power in the first place,

so I would go ahead with refurbing that Y board, you can send it in for repair here: http://www.coppelltvrepair.com/p/1426/lg-60pz750-ug-auszlhr-ysus-repair-service-for-no-image-failing-to-start-or-shutting-down-tv-problem or http://www.ptselectronicsinc.com/EBR73561201/

Ask Your Own TV Question
Customer reply replied 4 months ago
sorry im a little confused y sus board seems to have power...right? the fuse was reading 250 v and psu output pins working
TV Technician: Eldon, Technician replied 4 months ago

Yes, this is not a matter of it having power or not, there are many other components on that board that can and do fail.

If it wasn't getting power in the first place I'd tell you to replace the power supply.

Ask Your Own TV Question
TV Technician: Eldon, Technician replied 4 months ago

Hello, it appears your question is still open.
Do you need more help with this?

Ask Your Own TV Question
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 Eldon Your Own Question
Eldon
Eldon
Eldon, Technician
Category: TV
Satisfied Customers: 244
244 Satisfied Customers
Experience: Engineer at Tech company

Eldon 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
I have a Vizio VF551XVT TV. With no power to TV, all the
I have a Vizio VF551XVT TV.With no power to TV, all the fuses, on all the boards test good.The issue I am having with it are…I recently replaced the Main Board because the all the HDMI inputs got tras… read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
344 satisfied customers
I have an LG 50pa5500 plasma tv that has stopped working.
I have an LG 50pa5500 plasma tv that has stopped working. We turned it on, heard a loud pop, and it went off. Now it clicks once when you turn it on, then clicks off again a second or two later. No pi… read more
Pete
Pete
Engineer
Bachelor\u0027s Degree
1,130 satisfied customers
Ive got an LG 50pj350 that will not turn on anymore. Im aware
Ive got an LG 50pj350 that will not turn on anymore. Im aware that these had a lot of problems with the power supply where the tv would turn on, make an audible click noise and shut back off in a coup… read more
Aric
Aric
Owner/Operator of a custom AV company
Run A/V and repair business for over
13,666 satisfied customers
I have a Vizio VL470 m TV. The Mainboard was taken out by
I have a Vizio VL470 m TV. The Mainboard was taken out by lighting this Spring. I had sound and no picture from any HDMI port. I purchased and replaced the Mainboard without a problem. Recently, while… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,506 satisfied customers
I have a Hitachi 51f500a that will no longer turn on. When
I have a Hitachi 51f500a that will no longer turn on. When I press the power button the red light is no longer on and nothing happens.… read more
Louie
Louie
Technician
Associate Degree
3,022 satisfied customers
I have a NS-PDP50HD-09 that wont turn on. I know that I
I have a NS-PDP50HD-09 that won't turn on. I know that I will have to probably replace one of the boards, but I am not sure which one. Also I noticed that the power board was missing a fuse. So before… read more
Tim Nolan
Tim Nolan
TV Repair Center Owner
Associate Degree
17,254 satisfied customers
Pn63c8000 samsung Plasma loud pop then no picture No voltage
Pn63c8000 samsung Plasma loud pop then no picture No voltage coming out of Power suppy board.So, Replaced power supply board. Now I have a little led pilot light lit and very slowly flashing on the lo… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
I have a toshiba 42hp66 tv with no picture, yet sound works.
I have a toshiba 42hp66 tv with no picture, yet sound works. Power light is green, heatsinks of both y sus and z sus are warm. and no fuses appear open. not sure if consistant on off cricket chirp fro… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
I have a Olivia model # XXXXX set. I turn on the set and
I have a Olivia model # XXXXX set. I turn on the set and it is fine. After a few minutes the screen starts flickering then turns blue and comes and goes with wierd colors. I have unpluged it and let i… read more
Tim Nolan
Tim Nolan
TV Repair Center Owner
Associate Degree
17,254 satisfied customers
I HAVE A 46IN. LCD TV. IT LOST PICTURE AND SOUND. THE SCREEN
I HAVE A 46IN. LCD TV. IT LOST PICTURE AND SOUND. THE SCREEN SHOWS UNUSABLE SIGNAL. TRIED UNPLUGGING IT, TRIED A SOFTWARE UPDATE. NOTHING HAS WORKED. THIS TV IS NOT QUITE 4 YEARS OLD. IS THERE ANYTHIN… read more
Jack
Jack
Technician
11,343 satisfied customers
I have a Vizio GV42L that is exhibiting what apparently is
I have a Vizio GV42L that is exhibiting what apparently is a common problem. Vizio LED power indicator is OK with orange standby light. When powering on, Vizio LED light goes to white, TV maybe gets t… read more
Tim Nolan
Tim Nolan
TV Repair Center Owner
Associate Degree
17,254 satisfied customers
My Samsung LCD TV is stuck in standby mode. When i plug in
My Samsung LCD TV is stuck in standby mode. When i plug in the tv to a power point, it fires up, but then switches off. It repeats this constantly. Using the remote to switch on has no effect. Took th… read more
electech02
electech02
Associate Degree
22 satisfied customers
Pdp-42xr9da tv on out of standby for about 10 seconds then
TV comes out of standby. Sound comes for about 2 seconds. Then no sound, no picture. Suspect R5119 open circuit. Low ohm resistor?… read more
Jack
Jack
Technician
11,343 satisfied customers
We have a Phillips Magnovox Smart Series tv (not sure of the
We have a Phillips Magnovox Smart Series tv (not sure of the age - somewhere between 11-15 years, 36 inch screen). We had a storm last week with much wind and a fair amount of lightning, though we are… read more
ProTV and Audio
ProTV and Audio
Principal. Engineering Technician
Bachelor\u0027s Degree
939 satisfied customers
I have a Vizio VP50HDTV10A built in August of 07. It died
I have a Vizio VP50HDTV10A built in August of '07. It died and I opened it up to find one of the 4 amp GFN fuses dead on the Y sustain board. I replaced it but the unit still wouldn't power on. When y… read more
Chuck Williams
Chuck Williams
Freelance Electronics Technician
Vocational, Technical or Trade Scho
3,774 satisfied customers
I have a MAXENT MX-50x3 plasma tv that will not turn on. When
I have a MAXENT MX-50x3 plasma tv that will not turn on. When I press the power button the tv attempts to turn on, the screen shows a partial flash and the power led starts to flash green continously … read more
Rick williams
Rick williams
Electronic technician
Vocational, Technical or Trade Scho
7,246 satisfied customers
Hello, I have a Zenith P42w24b that will only stay on for
Hello, I have a Zenith P42w24b that will only stay on for a couple of seconds before turning itself off automatically. I've opened the box and checked the only fuse I could find and I've visually insp… read more
Mahen
Mahen
Bachelor's Degree
206 satisfied customers
hello, I have a dell 4201C. 42 plasma. its been through a
hello, I have a dell 4201C. 42'' plasma. its been through a power surge of some sort and no longer has picture or sound. I am an E.E. student and know my way circuit boards and am capable of testing c… read more
Steve
Steve
Chief Engineer
9 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