TV

Facing TV Problems? Ask a TV Technician.

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

All of my inputs give me a blue screen. It is a Mitsubishi…

All of my inputs...

All of my inputs give me a blue screen. It is a Mitsubishi LT 55-164. I have tried every reset possible, different cables, periferal devices, HDMI, RCA, you name it and I have tried it. I plugged in an Amazon Fire Stick last night and same blue screen issue but after doing all of the resets like inhale done today, it started working. After about an hour it went to a blue screen again but came back on for about two more hours. It finally went off for good and I can't get anything to work at all.

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

I only plug in the one cable to the device I am trying to test at one time. So no unless I am trying to test something, PlayStation, Amazon Fire Stick, Etc.

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

No

Technician's Assistant: Anything else you want the TV Expert to know before I connect you?

I just got the tv from a friend so I don't in know it's history. The test pictures and audio tests that I run work perfectly but whatever main board that controls all of the inputs for audio and sound is either very intermittent or failed.

Show More
Show Less
Ask Your Own TV Question
Answered in 33 minutes by:
3/25/2018
Aric
Aric, Technician
Category: TV
Satisfied Customers: 46,665
Experience: 15+ years in the field. Owner of AV Installation, OEM and Repair company
Verified

I'm reviewing your details and will reply shortly.

Ask Your Own TV Question

Unfortunately these symptoms indicate a failed Mainboard in the set (the board that processes external AV signals) and generally requires replacement of this board to fix the issue).

However it's worth it to try a hard reset, as sometimes the processor in the TV can simply have locked up.

 

The first thing you would try, is disconnect the set from power, then press and hold the power button on the TV itself (not the remote), for 10 seconds and release. Then plug the set back in, and also check that the power cord is connected tight at the TV as well. Press power once, and see if the set powers up normally. Try this procedure up to 2 times, and please let me know what happens.
Ask Your Own TV Question

If you're still having the same problem, then unfortunately this indicates the set's Mainboard has failed and needs to be replaced. This is a "plug and play" part- meaning no soldering or special tools are needed to replace it. Only a screwdriver and about a half hour of your time. That part can be purchased for your set at the link below for $165 (but is currently showing as out of stock):

http://www.shopjimmy.com/mitsubishi-934c374002-main-board.htm

Alternatively, if you're not comfortable with this type of work, then at a shop this is $300-$350 parts and labor, which may or may not be cost effective as a brand new 46-50" LED Smart TV starts at around the same cost. However if you'd like to inquire on repairs, or seek a 2nd opinion, you can use the link below to locate a shop in your area:

http://www.tvrepairpros.com

Other than that, I'm sorry for the bad news and wish there were a quick fix.

Let me know if you need more help. Also, could you please click a POSITIVE RATING (3-5 stars at the top of the page) and click SUBMIT so that I am credited for working with you today?

Ask Your Own TV Question

Do you need further assistance with this?

Ask Your Own TV Question
Customer reply replied 26 days ago
I repair two way commercial radios for a living so I am comfortable with any electronic fixes. I have solder/desolder equipment but if it is plug and play then it should be pretty simple. I have the back of the tv off and there is a sub card plugged into the top of the input main board that is flashing. Is that normal? Also when I plug the tv in there is a green light on the front that flashes for several seconds before I can power the tv up. Is that normal? I have ran through the error code procedures for this model and it shows no error codes.

Yes, I'm very familiar with this issue and it's a faulty mainboard all day long. I've likely seen over 100 of this failure on this model as well. You need to replace your Mainboard to fix the TV.

Ask Your Own TV Question
Customer reply replied 26 days ago
I repair two way commercial radios for a living so I am comfortable with any electronic fixes. I have solder/desolder equipment but if it is plug and play then it should be pretty simple. I have the back of the tv off and there is a sub card plugged into the top of the input main board that is flashing. Is that normal? Also when I plug the tv in there is a green light on the front that flashes for several seconds before I can power the tv up. Is that normal? I have ran through the error code procedures for this model and it shows no error codes. It worked for a couple of hours last night with my Amazon Fire Stick but went blue screen for about two minutes and then came back. After another hour or so it went blue and I cannot get any periferal equipment to connect without showing a blue screen. It recognizes the equipment being connected but will not show any audio or video.

I can't say it any other way, and everything you're posting simply reinforces the fact that the TV has a failed Mainboard. I'm not sure what other information you're looking for.

Ask Your Own TV Question

No error code will show for a bad mainboard. The screen will remain blue for all video sources with a bad mainboard. The mainboard is the only board in the set that can fail and cause a blue screen. Yes it will recognize peripherals and not display their video with a failed mainboard. Was there anything else you needed?

Ask Your Own TV Question
Customer reply replied 26 days ago
No. Thanks for your help. I will give you a great review. Can you please just tell me what the jump drive looking card that USB plugs into the top of the main board does? It was flashing when i first took the back off to check to see if any cables were unplugged and I unplugged it and then plugged it back in. It seemed to reset all of the inputs which was good bc I had a fresh start on recognizing every device I plugged in. Do you know what that is?

I'm looking at a picture of the Mitsubishi Mainboard and do not see what you're seeing. Postback with a photo of this jump driver and specifically where it's located.

Ask Your Own TV Question

My best guess is someone put a USB photo drive into your TV to view photos??

Ask Your Own TV Question

Green light flashing simply means the drive is being powered. Beyond that I need to see what you're seeing to have any other idea. In stock form, the Mits does not "come" with any USB drive attached...

Aric
Aric, Technician
Category: TV
Satisfied Customers: 46,665
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
Customer reply replied 26 days ago
I sent a pic. It says azure were. Wireless 802.11. It must be the ability to connect to my router or Bluetooth capability

It's a wireless internet adapter- aftermarket, and not related to the problem the TV was having.

Ask Your Own TV Question
Customer reply replied 26 days ago
There are many repair options on eBay for that specific board with many great reviews for 80$. Do you recommend that option?

I have no direct experience with any of those vendors/repair services but I would say it's worth a shot so long as they have good feedback and you use Paypal so you have purchase protection.

Ask Your Own TV Question
Customer reply replied 26 days ago
Thank you Aric. It has been a pleasure.

You're very welcome and much appreciated!

Ask Your Own TV Question
Was this answer helpful?
Ask Aric Your Own Question
Aric
Aric
Aric, Technician
Category: TV
Satisfied Customers: 46,665
46,665 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
Does the Westinghouse smart tv have a Bluetooth feature? And
Does the Westinghouse smart tv have a Bluetooth feature? And how do I turn it on ? Also is there a way to hook up my ipad2 to it to stream tv, movies and the like ?… read more
Jack
Jack
technician
factory trained engineer
2,161 satisfied customers
How to add Acorn TV to Smart TV to stream programs?
How can I add the Acorn TV to the Smart TV so I can stream the programs like I can with Netflix?… read more
Aric
Aric
Technician
46,665 satisfied customers
Vizio Smart TV is locked up with remote not working
My Vizio Smart TV is locked up and the remote will not work to power down; nor do the TV buttons work. Have to unplug the TV to shut it off. When I plug it back in, it goes right to the same channel a… read more
Aric
Aric
Technician
46,665 satisfied customers
Y Smart TV (Vizio) says that it is not connected to the
y Smart TV (Vizio) says that it is not connected to the inertnet. the internet is working on other products in the home. How do I reconnectM … read more
p0llinate
p0llinate
Bachelors of Science
14 satisfied customers
Is the LC-42SB45U model a smart TV. Sharp. LC-42sb45u is the
no issues. wondering if this TV will accept a fire stick … read more
Rusty
Rusty
Audio Video Technician
Associate Degree
2,069 satisfied customers
Do I have a smart TV. Do I have a smart TV. IEmerson model
Do I have a smart TV JA: What's the brand and model number of your TV? How old is it? Customer: Do I have a smart TV JA: Does the TV menu work? Do you have the same problem on all sources/inputs? Cust… read more
Jack
Jack
technician
factory trained engineer
2,161 satisfied customers
MY SMART TV KEEPS REPEATING THE SMART TV SCREEN AND THE FIVE
MY SMART TV KEEPS REPEATING THE SMART TV SCREEN AND THE FIVE ICON SCREEN AND RARELY GOES BEYOND THAT. THE ONLY WAY TO STOP IT IS TO PULL THE PLUG … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,505 satisfied customers
My 55" Samsung smart TV blinks 5 times smart TV logo comes
My 55" Samsung smart TV blinks 5 times smart TV logo comes on for a second then goes blank and no sound … read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
341 satisfied customers
I have a Avision $K smart tv. The HDMI inputs have stopped
Good morning. I have a Avision $K smart tv. The HDMI inputs have stopped working. … read more
Dan T.
Dan T.
Calibration and Repair Center Supervisor
Associate Degree
5,680 satisfied customers
Won't stay o hdmi source. Samsung smart tv 2-3 years.
Samsung smart tv 2-3 years. O22cc3xf2000877n. 55 inch … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,505 satisfied customers
I have problem with calibration Hdmi for samsung smart tv.
Second opinion] I have problem with calibration Hdmi for samsung smart tv … read more
Pete
Pete
Engineer
Bachelor\u0027s Degree
1,129 satisfied customers
Screen went black 5years old smart tv 40" Hdmi cable. Bottom
Screen went black 5years old smart tv 40" JA: Are there any HDMI cables or A/V jacks (red, yellow, and white cables) plugged into your TV? Customer: Hdmi cable JA: Was there a power outage recently? C… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,505 satisfied customers
Have a new Samsung smartly and. Smart tv and the HDMI cable
smart tv and the HDMI cable is connected but no signal … read more
Aric
Aric
Technician
46,665 satisfied customers
Samsung smart tv wont send audio via HDMI. Anynet+ enabled.
Samsung smart tv wont send audio via HDMI. Anynet+ enabled … read more
Louie
Louie
Technician
Associate Degree
2,950 satisfied customers
Bought a new LG smart tv and have hooked up the HDMI cable
Bought a new LG smart tv and have hooked up the HDMI cable from the direct tv receiver to the HDMI In port the tv will not connect with direct tv … read more
Harry
Harry
1,383 satisfied customers
If I have a Smart TV with an HDMI outlet, do I still need
If I have a Smart TV with an HDMI outlet, do I still need and HD Antennae? … read more
Richard
Richard
IT Manager
IT Manager, Consultant
3,395 satisfied customers
Samsung smart tv. will not turn on. Samsung smart tv
working fine last night. I went to turn it on today and only had volume for a few seconds so I turned it off and now it won't turn back on. No picture. … read more
Aric
Aric
Technician
46,665 satisfied customers
Just got a new Samsung SMART TV don't have HDMI for this TV
just got a new Samsung SMART TV don't have HDMI for this TV however, I was told my receiver is bad.. My Radio, CD player and DVD player work just fine! The picture is black and goes in and out occasio… 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