TV

Facing TV Problems? Ask a TV Technician.

Ask an Expert,
Get an Answer ASAP!

My Sony KDL-46XBR4 has gone out. It started being difficult…

Customer Question
Hello. My Sony KDL-46XBR4...

Hello. My Sony KDL-46XBR4 has gone out. It started being difficult to power on about 18 months ago. I'd have to unplug the power and HDMI and replug them and try off and on multiple times - it would finally start. I then decided to leave the TV on at all times and only turn off the cable box. That worked for over a year. Then . . . my wife forgot and turned it off and it won't power up again. The Sony logo and the front-bottom-center does light up when I attempt to turn it on, but nothing else. I checked the 250v fuse on the power board and, as expected, it's good. Since there are actually six boards on the back of the TV, I don't know where to begin.

Technician's Assistant: What is the exact make and model of your tv? And how long has this been an issue?

I'm sorry. Did you not read my message?

Technician's Assistant: Does the TV menu work? Do you have the same problem on all sources/inputs?

I presume these are computer generated responses since they aren't really appropriate.

Technician's Assistant: How long has this been an issue? What happened right before this popped up?

What is your name?

Submitted: 11 months ago.Category: TV
Show More
Show Less
Ask Your Own TV Question
Answered in 5 minutes by:
9/17/2017
TV Technician: Nathan, Installer replied 11 months ago
Nathan
Nathan, Installer
Category: TV
Satisfied Customers: 31,399
Experience: Custom home theater installer, authorized dealer top brands.
Verified

Hi, I'm Nathan.
Sorry to hear that you're having trouble, but I'll do my best to help you. Please give me a few moments to review and reply.

Ask Your Own TV Question
Customer reply replied 11 months ago
Okay
TV Technician: Nathan, Installer replied 11 months ago

Unfortunately, the issues you are experiencing are symptomatic of an internal hardware defect, meaning a faulty main board, though there are many possible failure points. This issue could be a manufacturing defect, but is also often caused by a power event (shock/surge, prolonged over/under voltage condition, etc).

This could also be the result of age related wear and tear; as a 2007 model tv, that type of failure wouldn’t be surprising. This tv is over double its service life at this point.

There is one step you can take here, both as a possible fix, as well as a diagnostic evaluation:
1) Unplug the power cord from the outlet

2) Wait at least 1 hour (60+ Minutes)

3) Press and hold the power button (on the set, not the remote) for 60 seconds
4) Keep holding power button while plugging back in, and for another 60 seconds after. When plugging back in, go directly to the wall outlet, bypassing any power strips or surge protectors.

If this reset process does not work, it would unfortunately confirm an internal hardware failure.

This is something that would require repairs to correct; meaning to replace the AU board as a starting point: http://bit.ly/2jDhPbs

The part is luckily available and inexpensive, however keep in mind that even if you are able to fix the current issue, it will not extend the life of the tv any appreciable amount. Given the age, the other 5 boards will be expected to fail at any time now as well.

If you’re considering repair at a local shop, you’ll find a typical repair to be around $300 for diagnostics, parts, and labor.

For a tv of this size/age, replacement will usually make more sense. You can get a brand new LED tv, even the latest 4k models, with a fresh warranty in the $300-400 range.

I can help you with finding a repair shop, or recommending replacement options, if desired.

My apologies for the news,

Nathan

Ask Your Own TV Question
Customer reply replied 11 months ago
How do I stay in touch with you while I try the suggestion?
Customer reply replied 11 months ago
What makes you think it's the Sony A-1313-996-B (1-873-856-21) AU Board instead of one of the other five boards?
Customer reply replied 11 months ago
What is happening during ONE-HOUR wait you mentioned that wouldn't happen in Twenty minutes? If it is to drain power, could I not ground it to do this immediately, since the cover is already removed from the back of the TV?
TV Technician: Nathan, Installer replied 11 months ago

Because of your indication that you had to pull the hdmi as well.

If it is powering on even initially, then that means the power supply board is fine, which really leaves the main as the primary failure point. The hdmi processing is on the AU board as well.

Yes you could ground it to discharge power if you have the back off already and leave it off for a shorter period.

Ask Your Own TV Question
Customer reply replied 11 months ago
I'll be back shortly
TV Technician: Nathan, Installer replied 11 months ago

Thanks

Ask Your Own TV Question
Customer reply replied 11 months ago
You disappeared from my notebook
TV Technician: Nathan, Installer replied 11 months ago

Not sure what you mean?

Ask Your Own TV Question
Customer reply replied 11 months ago
I need you to re-evaluate your logic about choosing the main board to replace.
I said I unplugged both cords - but that was just to start with a clean slate. I have nothing to demonstrate that I had cause to unplug the HDMI. The fact is that the most important thing seems to have been NOT to turn off the TV. I always turned off the DirecTV that was connected via HDMI.
Do these facts give you cause to reconsider possibly the power board, even though, as I stated, the Sony logo would always light up when I attempt to turn on the TV - even now?
Customer reply replied 11 months ago
As long as the TV wasn't turned off for the last 18 months it continued to work -- until my wife forgot and turned it off.
TV Technician: Nathan, Installer replied 11 months ago

So you have been leaving it on and operating it continuously, just turning the directv off (so you had a black but lit screen, no sound, but tv still on)?

Even if so, if the power board was at fault, it wouldn't have sufficient voltage to start up in the first place, so you wouldn't even get the logo, and the main board is still the primary failure point in that situation.

Ask Your Own TV Question
Customer reply replied 11 months ago
Anyhow, the hour passed since Ed I first disconnected the power when I removed the back cover and the test failed. I didn't drain it because there are multiple capacitors and it's out of my league which or how many to work with.
TV Technician: Nathan, Installer replied 11 months ago

There are multiple capacitors, the point of the process is to remove power from the integrated circuitry on the main really, which is accomplished by the long unplug, in addition to the holding of the power button while still unplugged, which will have the same effect of draining power from those caps.

Ask Your Own TV Question
Customer reply replied 11 months ago
To be sure you understand clearly, the logo is not on the screen. It's part of the TV case.
TV Technician: Nathan, Installer replied 11 months ago

Okay I thought you were referring to the boot up logo, thank you for clarifying.

That can change things a bit, so you would need to actually proceed with testing the outputs of the power supply to see if there are any low/missing voltages there.

If you don't want to deal with the testing, you could jump ahead and replace the power supply. The power board is available for about $25: http://www.shopjimmy.com/sony/kdl-46xbr4?cat=59&q=KDL-46XBR4&tv_models=Sony+KDL-46XBR4

so even if you wanted to just do the shotgun approach and buy both the main and power, you'd get away for $50 or less and be addressing the 2 primary failure points here that are by far the most likely to be the cause. If it were anything else, you'd have other symptoms.

Ask Your Own TV Question
Customer reply replied 11 months ago
Sorry, your link showed the following:Sony A-1313-996-B (1-873-856-21) AU Board
Customer reply replied 11 months ago
Just want to be sure I should get the "A" and not the "B"
Customer reply replied 11 months ago
If you replied I never got it.
TV Technician: Nathan, Installer replied 11 months ago

My apologies for the delay, I didn't see your prior messages.

There are hardware revisions, depending which panel was used in your set,

Ask Your Own TV Question
TV Technician: Nathan, Installer replied 11 months ago

You do want to match your current part, so you would want the B variant: http://www.shopjimmy.com/sony-a-1313-996-b-au-board.htm

Ask Your Own TV Question
Customer reply replied 11 months ago
Sorry, I don't think you are reading my message correctly.
I have the: Sony A-1313-996-A (1-873-856-11) AU Board.
You sent a link to:
Sony A-1313-996-B (1-873-856-21) AU Board
Notice the "B" and the "-21" difference.
At ShopJimmy it's says: "This board may or may not have a connector at CN1202."
Does this matter to me?
Customer reply replied 11 months ago
You gave me a link for the Power Board: Sony A-1253-585-A.
At ShopJimmy it says this is a "Backlight Inverter." Is that actually the same thing as a power board?
I found A-1362549-A to be the:
GF1 Board, Power Supply Unit
TV Technician: Nathan, Installer replied 11 months ago

I didn't see the image you attached earlier, I was saying you want to match what you currently, have, so if you have the A board now, that is what you want to get, or match B for B.

Looking at the picture you sent, that is the A version. The very first link I sent was to the B version,

your picture looks like it is the A version, so you'd use the A: http://www.shopjimmy.com/sony-a-1433-189-a-au-signal-board.htm#

yes, it does mention the connector disclaimer, which is more about making sure you get the right version. In some cases the A model may work fine in an A or B tv, but the B board won't necessarily work in an A. The real point is to try to get a proper match where possible.

The power link I was sending was meant to be to a list of all the power boards, so you could choose the one that matches your current part.

The GF1 board is what I was trying to point to, and that is the power board, and not the same as the backlight inverters (which is power related as well, but not the primary power supply board).

Ask Your Own TV Question
TV Technician: Nathan, Installer replied 10 months ago

Just checking in, were you able to get the new board?

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 Nathan Your Own Question
Nathan
Nathan
Nathan, Installer
Category: TV
Satisfied Customers: 31,399
31,399 Satisfied Customers
Experience: Custom home theater installer, authorized dealer top brands.

Nathan 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 Sony KDL-46BX450 that started going off and on. as
I have a Sony KDL-46BX450 that started going off and on. as soon as it would come on after a couple seconds it would power back off and then immediately power back on … read more
info tech
info tech
Self Employed
Vocational, Technical or Trade Scho
345 satisfied customers
I have a SONY Bravia KDL-46XBR4 that is 9 years old. When I
I have a SONY Bravia KDL-46XBR4 that is 9 years old. When I turn off the TV and try to turn it back on there is sound but no picture. After waiting for hours (or overnight) the picture returns, usuall… read more
Jack
Jack
technician
factory trained engineer
2,164 satisfied customers
I have a Sony KDL-46XBR2 with no power up. Has light and
Hi, My name is***** have a Sony KDL-46XBR2 with no power up. Has green light and Sony logo. This started some time ago as a very slow warmup problem and continued to worsen. I have several voltage measurements that I have taken. … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,507 satisfied customers
In Australia I have a SONY KDLR550A TV turn on and SONY
Hi Jack in Australia I have a SONY KDLR550A TV turn on and SONY logos appears, goes off and TV tries again and fails 6 red flashes … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,507 satisfied customers
I turned off my Sony Bravia and went on Vacation. The TV
I turned off my Sony Bravia and went on Vacation. The TV with not turn on have change places for plug in no results. Does Sony have fuses on there tvs… read more
Jack
Jack
technician
factory trained engineer
2,164 satisfied customers
I have a Sony KDL-46BX420 and I turn it on and it shows the
I have a Sony KDL-46BX420 and I turn it on and it shows the sony logo then just goes black. Hitting the channel, volume and mute buttons do nothing. If I hit the power button again though I can hear i… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,507 satisfied customers
Lightening struck near our house, and my sonny bravia kdl40bx421 TV lost power and red lig
Lightening struck near our house, and my sonny bravia kdl40bx421 TV lost power and red light won't come on. The power outlet is working, and all other appliances. Do you think the problem is the power… read more
Mike G.
Mike G.
Television Repair Technician
Vocational, Technical or Trade Scho
1,674 satisfied customers
Vizio 55 inch, smart TV, 2 yrs old ....turns itself off.
Vizio 55 inch, smart TV, 2 yrs old ....turns itself off. over & over multiple times per hour. I'm about ready to take a shotgun to it.… read more
Jack
Jack
technician
factory trained engineer
2,164 satisfied customers
I have a 2007 KDL-46XRB4 from Sony. It has worked flawlessly
I have a 2007 KDL-46XRB4 from Sony. It has worked flawlessly for about six years. Now for some strange reason it wants to turn off and on every five seconds until I finally hit the power button. This … read more
Louie
Louie
Technician
Associate Degree
3,022 satisfied customers
I have a Sony KDL-46XBR5 and couple months ago the HDMI ports
I have a Sony KDL-46XBR5 and couple months ago the HDMI ports stopped working. I replaced the FB1 board part A-1418-997-A and the HW2 board part A-1252-950-A. Turned TV on and it work great for about … read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,507 satisfied customers
Hi Steve: We have a Sony KDL 46 XBR4..for a few days it wouldnt
Hi Steve: We have a Sony KDL 46 XBR4..for a few day's it wouldn't come on unless you unpluged the power cord..now it's dead in the water.. Flashing (5) red blinks..tries to come on..Sony light comes o… read more
Steve
Steve
Chief Engineer
9 satisfied customers
I have a Sony KDF-55WF655 tv. It went off and the power led
I have a Sony KDF-55WF655 tv. It went off and the power led is blinking. It blinks 10 times, stops and repeats.… read more
Shahid
Shahid
Owner of Repair Shop
High School or GED
3,507 satisfied customers
Chuck I have a 3.5 year old Sony KDL 46w3000. Had a problem
Chuck: I have a 3.5 year old Sony KDL 46w3000. Had a problem with it awhile back and you instructed me to replace a certain board, which I did and that fixed it. Today, turned the set on and it starte… read more
Dan T.
Dan T.
Calibration and Repair Center Supervisor
Associate Degree
5,680 satisfied customers
I have a Sony KF-50WE610. Thought I had a bulb problem again.
I have a Sony KF-50WE610. Thought I had a bulb problem again. After putting a new bulb in I have the same problem. The past week I have had to push the power button several times before it would "catc… read more
Mike G.
Mike G.
Television Repair Technician
Vocational, Technical or Trade Scho
1,674 satisfied customers
I have a 40 LCD sony bravia and when I try to turn on the
I have a 40" LCD sony bravia and when I try to turn on the TV it's almost start but run quickly to standby. What I could do to fix it?… read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
Has anyone heard of this problem with a Sony Bravia 46 inch
Has anyone heard of this problem with a Sony Bravia 46 inch LCD tv? Turn it on from cold, fine for five minutes, then ghost images appear for 10 minutes, then it clears up and the picture is fine for … read more
TV Tech1
TV Tech1
Associate Degree
4,544 satisfied customers
Hello, I have a 2-yr old Panasonic TH-42PX77U and it suddenly
Hello, I have a 2-yr old Panasonic TH-42PX77U and it suddenly turned off and won't turn back on. I have used both the TV and DirecTV remote and then changed power outlets. Any ideas? Thanks!… read more
Dan - Master Tech
Dan - Master Tech
Small Business owner
Technical School
279 satisfied customers
Hi Have a plasma 42pds200 i switched it off last night and
Hi Have a plasma 42pds200 i switched it off last night and went to turn it on today to find it won/t turn on have done the checking of the power cord and am know at a loss as to what to do next… read more
Dan - Master Tech
Dan - Master Tech
Small Business owner
Technical School
279 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