TV

Facing TV Problems? Ask a TV Technician.

Ask an Expert,
Get an Answer ASAP!

TV

My sanyo dp50740 plasma tv keeps turning off randomly. Sometimes

Customer Question
it will be on for...
My sanyo dp50740 plasma tv keeps turning off randomly. Sometimes it will be on for hours and then other times it will only be on for 10 minutes. It just goes to a blank screen but the green power light stays on. I have been seeing that it is the power board.
Submitted: 6 years ago.Category: TV
Show More
Show Less
Ask Your Own TV Question
Answered in 2 hours by:
8/25/2011
TV Technician: Dan, Master Tech and Repair Facility Trainer replied 6 years ago
Dan
Dan, Master Tech and Repair Facility Trainer
Category: TV
Satisfied Customers: 7,296
Experience: USAF trained; A.A.S Electronics; A.A.S. Education; Currently teaching advanced troubleshooting and repair for the DoD.
Verified
Thanks for the question. My name is Dan.

The first thing we need to do is remove the TV's rear panel. Be sure the TV is unplugged first. Now trace that power cord to a circuit card inside the TV... that's the power supply. Have a good close look at the board, paying particularly close attention to the capacitors. Are any of them puffy on top? Not totally flat like the others?


Respectfully,
Dan
Ask Your Own TV Question
Customer reply replied 6 years ago
I checked that while I was waiting for your response and I also did a ohm check on the capacitors, all were fine. Do you think it might be an ic chip that went bad? All the caps are flat and no bulges at all. Do you think it is the power board or could it be another board that is having the issue?
TV Technician: Dan, Master Tech and Repair Facility Trainer replied 6 years ago

Have you checked the DC voltages leaving the power supply? If not, let's try that now.

Put your red lead on each pin leaving the power supply one at a time, with your black lead on any exposed chassis metal for ground. Stick that red lead down into the connector so the lead makes contact with the pin.

Be sure the TV is turned on. If it's shutting down too quickly, put your leads in place first and turn it on and see what the voltage jumps to before it shuts off (the voltage will drain post-shutoff).

Let me know what you're measuring.


Dan

Ask Your Own TV Question
Customer reply replied 6 years ago
I figured out the issue and fixed it. In the end I just had to replace the power board and now it is working properly.
TV Technician: Dan, Master Tech and Repair Facility Trainer replied 6 years ago
Ok, take care.
Ask Your Own TV Question
Ask Louie Your Own Question
Louie
Louie
Louie, Technician
Category: TV
Satisfied Customers: 2,950
2,950 Satisfied Customers
Experience: 25+ yrs. experience in the field and 5+ yrs. online, down to component level.

Louie 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
It's my tv .... Can you answer? Sanyo about 7 years old ....
My problem is only with the pvr'd. When I try to replay the show I have pvr'd the show stalls, stops, and I skip and it will start again but keeps stalling. And it misses some of the show as well … read more
Dan
Dan
IT/Broadcast Engineer
Bachelor\u0027s Degree
508 satisfied customers
Remote does not work. Sanyo. It stays on one channel and
remote does not work JA: What is the model of your TV? Customer: sanyo JA: What menu options can you access, if any? Customer: it stays on one channel and volume works fine JA: Anything else you want … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,497 satisfied customers
My Sanyo flat panel TV remote no longer works. I have to
My Sanyo flat panel TV remote no longer works. I have to turn it on and off and turn the volume up and down from the set itself. I had it programmed through my cable box. The was no event which precip… read more
Louie
Louie
Technician
2,950 satisfied customers
Having problems setting up my new 32-in Sanyo TV. FW32D06F
Having problems setting up my new 32-in Sanyo TV JA: What Sanyo model do you have? How old is it? Customer: FW32D06F one day old JA: Does the TV menu work? Do you have the same problem on all sources/… read more
Richard
Richard
IT Manager
IT Manager, Consultant
3,281 satisfied customers
Plasma TV PN60F5300 with a horizontal line across the center
Plasma TV PN60F5300 with a white horizontal line across the center of the screen … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,497 satisfied customers
I purchased a sanyo tv model fw32D06F a few months back and
I purchased a sanyo tv model fw32D06F B a few months back and I have never been able to get any channels downloaded and cant get my direct tv remote to connect to it. … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
I bought Mum a 2nd hand Sanyo Tv. There is a thin line
Hi I bought Mum a 2nd hand Sanyo Tv. There is a thin line (probably one line) close to the middle of tv . the line is blue in colour … read more
Pete
Pete
Engineer
Bachelor\u0027s Degree
1,124 satisfied customers
I have a Panasonic plasma TV which is not responding- no
I have a Panasonic plasma TV which is not responding- no picture, no sound, no power light. It had been working fine. We had a brief power outage - TV was not on at the time. Has not worked since.… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,497 satisfied customers
Need to adjust zoom on Sanyo with no menu button. Have a
Need to adjust zoom on Sanyo with no menu button. Have a universal GE remote. Remote will not pull up anything in the menu that relates to ratio or zoom. … read more
Aric
Aric
Owner/Operator of a custom AV company
Run A/V and repair business for over
13,653 satisfied customers
I have a sanyo tv with built in dvd player. For 5 years
I have a sanyo tv with built in dvd player. For 5 years everything perfect. I played a dvd two nights ago and when finished it refused to return to tv. this is the first time this has happened. I trie… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,497 satisfied customers
We pressed something on our Sanyo tv remote and now there
we pressed something on our Sanyo tv remote and now there is … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
I just bought a Sanyo tv for the spare bedroom. It is
I just bought a Sanyo tv for the spare bedroom. It is connected to the recever with coaxial cable. How do I need to set it up?… read more
Aric
Aric
Owner/Operator of a custom AV company
Run A/V and repair business for over
13,653 satisfied customers
Can't tell if my 2017 sanyo is a smart tv. Less than one
less than one year old Not sure of the model. bought it at walmart … read more
Aric
Aric
Owner/Operator of a custom AV company
Run A/V and repair business for over
13,653 satisfied customers
IT IS MY DELL W4200 PLASMA TV IT IS GETTING TO WHERE IT IS
IT IS MY DELL W4200 PLASMA TV IT IS GETTING TO WHERE IT IS HAVING A HARD TIME POWERING UP ANY SUGGESTIONS … read more
Aric
Aric
Owner/Operator of a custom AV company
Run A/V and repair business for over
13,653 satisfied customers
My elderly neighbor has a sanyo tv, it is hd, but not a
my elderly neighbor has a sanyo tv, it is hd, but not a smart tv. She put a new firestick (alliance) on it, it was working fine on Fox News and now she gets nothing. Please tell me her problem so that… read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
I have a sanyo that turns on, everything works as should,
I have a sanyo that turns on, everything works as should, but I have no sound, no internal from speakers and no external on any device, speakers or appliances. … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
Pioneer elite plasma tv model pro1140hd. No picture.
Pioneer elite plasma tv model pro1140hd. No picture. Blinking blue light next to power button.Unplugged power for two minutes. … read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
323 satisfied customers
Aall of a sudden there is no picture on our Sanyo TV. It is
Aall of a sudden there is no picture on our Sanyo TV … 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