Question about Televison & Video

1 Answer

Sony bravia sound stuck

Model KDL 40V5100, 6 years old, 40 inch. Was watching Roku, switched to TV input. Sound then stuck at one level, will not go up or down with use of TV, Dish, Roku flicker or the buttons on the TV. When tried, the right hand corner reads "Audio System V- or +, whatever relates to what I am trying to do. Roku volume control on flicker works while on Roku. When I input back to TV, picture appears and sound is stuck, but weirdly, the Roku soundtrack continues on the earphones in the flicker simotaneously with TV. I have to pause Roku (which is not on the screen) to make the sound on Roku stop. Local TV store says HDMI is a problem on Sony's. Two repair place speculate the main board, replacement cost being about $325 just for parts. What do you advise? Thanks

Posted by Anonymous on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Televison & ... Master
  • 12,957 Answers

For a little more you can get a new better set with warranty. A no brainer.

Posted on Mar 21, 2017

5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

mistersony
  • 320 Answers

SOURCE: HDMI Input Stopped Working Sony Bravia KDL-40S2000

Bad input board BU or AU

Posted on Oct 18, 2008

SOURCE: Sony Bravia KDL-32W5500 no picture no sound

It seems that your unit has some sort of PSU fault, or a problem that is shutting down the Power Supply Unit, PSU. This happens so that no further damage, and possible fire will occur.
Remember there are leathl Voltages inside TV's, and generally these days don't contain any "User Servicable parts" like in the "Old" days, instead Board Replacment is all that is generally done.
You need to take the unit to a reputable service centre/man and ask for a firm "Quote" for the work to be done.

Posted on Feb 03, 2010

Testimonial: "Looks like a highly adequate answer!"

  • 1 Answer

SOURCE: Sony BRAVIA volume problem

I had this same issue, and solved it by putting the TV in "Theater Mode', which can be acheived by hitting the "Theater" button on the remote.

Posted on May 30, 2010

budmrtn
  • 11361 Answers

SOURCE: Sony Bravia KDL-V40XBR1, no picture

You either have failed 24vdc power supply section or failed backlight inverter board, check for 24vdc first, look for caps with leaking/bulging top.
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=Sony+BRAVIA+KDL+-V40XBR1+

http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Posted on Jun 13, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My sony bravia LCD 40 inch is appearing 2 straight lines on the screen and they are perpendicular to each other. These are now permanent lines and they are disturbing when watching tv, what could be t


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

Sep 16, 2014 | Sony BRAVIA KDL-40V2500 40 in. LCD HDTV

Tip

I get excellent TV sound and blurry picture with lines on the TV side. When i...


This is the basic guide that can be applied to most LCD flat panel TV.
By Bud Martin
First, try unplugging it from the outlet for about an hour to see if the TV will reset itself since the minute the TV is plugged into the wall, the power supply and processor will be running 24/7 and the EPROM can get corrupted by spikes and surges. Try using good quality surge suppressor to see if it will help if it happen often.
Look for burnt brown hot spots on the circuit boards, capacitors with leaking/bulging top or seals. Loose wires and connectors. Blown fuses.
Notes: We are dealing with high voltage that can kill you! so if you are not sure what you are doing, please have it fixed by the pro that has proper tools and safety equipment. Try to use GFI outlet and isolation transformer when work around the TV set and DO NOT DEFEAT THE GROUND PIN OF THE OUTLET/POWER CORD.

1) The power supply module (There are 4 regulated output voltages:- Standby 5vdc, switched 5vdc, 12~16vdc, and 24vdc).

The power supply converts the 120/230vac 50/60Hz into DC, then the high frequency (50~100kHz) switching circuits convert it back to AC but at high frequency which allows the power supply to use smaller and much lighter weight transformers (Ferrite core instead of heavy iron core), then this high frequency AC voltage is fed to the rectifier Diodes to get the DC output and filtered by DC filter capacitors that must have low ESR (Equivalent Series Resistance), if general purpose electrolytic caps are use, they will fail within a year or less due to high ESR.

The power supply has Standby 5vdc (5VSB, this is a MUST have before anything else will work, when this voltage is not present, there will be no any indicator light on the front panel) which is always on the minute the TV is plugged into the AC outlet, so it is on 24/7 and that is why the power supply will fail even though you may use the a TV not very often. It will see all the voltage spikes and surges 24/7.
This 5vdc is used to power the Processor and the Infrared remote receiver module which will be waiting for the command from the remote control or from the power switch, when the Power on command is received, the Processor will send the turn on signal (3.3~5vdc) to the power supply module (PSON pin) to the switch on the main 5vdc for the rest of the logic and Tuner circuits, 12~16vdc for the sound amplifiers (mostly Class D amplifier for efficiency and small size) and for the T-CON board (interface board between the LCD panel, some T-CON uses 5vdc, and the Logic board), and 24vdc for the Back lights inverter board (if there is no 24vdc then no back light).
Common failures:
Blown main AC fuse due to shorted out Diodes, transistors.
Bad capacitors leaking or bulging tops:
Shorted Diodes, transistors in the DC output side.

Testing the power supply output with dummy load:
24vdc testing: Disconnect the wires that go to the inverter board first. You can use two #1157 (using both Lo & Hi filaments by paralleling them at the base) car light bulbs connected in series so they can handle the 24vdc, this will put light load (about 70w) on the 24vdc output, the voltage out should be steady at 24vdc (+/-2v), if not, the power supply has regulation problem.
12vdc testing: disconnect the 12vdc TV load from the power supply board and attach one #1157 (using just the Hi filament), the 12vdc output should stay at 12v (+/-1v), if not, the power supply has regulation problem.

You should see the lamps go on when the TV power switch is ON and go OFF when the TV is powered OFF.

2) Main Logic board (It has Processor, Tuner, Sound Processor, Sources selector, Power amplifiers for speakers, interface port to the T-CON board for pictures).
This logic board sends out the turn on signals (3.3~5vdc) to turn on the rest of the Power supply module (Switched main 5vdc, 12~16vdc, and 24vdc), Inverter backlight ON (if no back light on command then there is no back lights),
Logic board supplies 5 or 12vdc to T-CON board B+ pin through switched transistor if T-CON board does not get the voltage from the logic board, you will get white/gray glowing screen without pictures.
Back lights Dimming (PWM) control signal.

3) Back lights Inverter board. Its job is to provide the drive voltage for the CCFL (Cold Cathode Fluorescent Lamp) to give white light for the screen.
This board is fed by the switched 24vdc (VBL) from the power supply module, it also get the Back lights on (BL on) control signal and the Dimming (Dim/PWM/) signal from the logic board. So for it to work, it needs 24vdc and the BL_ON signal.
Common failures:
Blown surface mounted fuses due to shorted transistors/ICs, Transformers.
Bad capacitors.

4) The T-CON (Timing Control or LCD controller) board (on the LCD panel assembly). It transfer the universal image signal of TTL and LVDS signal to specific TFT (Thin Film Transistor) LCD.
This is the interface board that talks to the Logic board and the LCD panel to produce pictures on the screen. White/gray glowing screen when it fails or not getting the voltage from the logic board (the 5 or 12vdc is supplied by switched transistor on the logic board). Notes: T-CON board is mounted under the metal cover shield.
Common failures:
Scrambled pictures, Lines, multiple pictures, color smears/blotches, rolling pictures after warm up.
Blown surface mounted fuse.
No pictures, very dark screen almost like there is no backlights.

5) LCD panel assembly to display pictures. The LCD pixels will block or unblock the back lights from the back of the panel to the front of the panel. This is the most expensive part of the TV, it will be more than the TV is worth.

As you can see, you must have all the above Voltages and signals for the TV to work properly. This may help you narrowing down the bad modules instead of buying the wrong module just to find out later that it did not solve the problem. Hope this will help you out.

Sound problem:
Let verify first to narrow down to where the problem can be. First, check the on screen sound set up menu to make sure the speakers are not set to OFF. If the setting is OK, then attach the powered PC speakers to the Audio Line out RCA jacks to see if you can get the sound there, if you do, then the problem can be in the power amp circuits, if you do not get the sound at RCA jacks, then the problem can be in the sound processor circuit. To get the sound repair, it can be from $150 and up, so if you can put up with using the good set of Powered PC speakers which actually give better sound than the tiny speakers inside the TV, I would keep using it that way, you may want to find out if the on screen sound setup will allow you to set the audio line out to be VARIABLE which means the sound output feeding the PC speakers can be varied using the TV remote control, then all you have to do is to set the PC volume to about half way up and set the TV volume to what ever you want.

Inverter board connector: you can also see the Fuse 4A/160V
http://i.fixya.nethttp://i.fixya.net13ca788.jpg
Power supply connector:
http://i.fixya.nethttp://i.fixya.net78e0d9a.jpg

http://i.fixya.nethttp://i.fixya.net2fc510f.jpg
T-CON board: (metal cover shielding is removed to show the bd.)
http://i.fixya.nethttp://i.fixya.net0b5367e.jpg
Inverter board:
http://i.fixya.nethttp://i.fixya.netaf0a695.jpg
Logic board:
http://i.fixya.nethttp://i.fixya.net4bd108e.jpg
T-CON board is dead, no power or blown fuse on the board, screen turns WHITE, must see it in darkened room, otherwise you may mistaken it for failed backlight.
http://i.fixya.nethttp://i.fixya.net3a91b68.jpg
Bad T-CON board after warm up, you get lines, multiple pictures, strange colors blotches, etc.
http://i.fixya.nethttp://i.fixya.netd3cf194.jpg
Bad caps (leaking/bulging tops). Make sure to replace bad cap with good cap such as PANASONIC FM or FC series , they are Low ESR (Equivalent Series Resistance) which is a must for switch mode power supply, and 105c rating. Do not use generic electrolytic caps.
http://en.wikipedia.org/wiki/Capacitor_plague

http://i.fixya.nethttp://i.fixya.netbe827ec.jpg
Bad T-CON board or power supply problem

http://i.fixya.nethttp://i.fixya.net034e1db.jpg

24vdc power supply output testing using two 12vdc car lamps in series.

http://i.fixya.nethttp://i.fixya.net4f2929c.jpg
Bad LCD panel, vertical 1~2 pixel wide lines
http://i.fixya.nethttp://i.fixya.net28e50c1.jpg
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm

Free service manuals: www.elektrotanya.com

on Nov 06, 2010 | Sony BRAVIA KDL-40S2010 40 in. LCD...

1 Answer

Sony 40 inch Bravia screen has sound, but picture have weird lines that go across screen


It could be caused by a bad T-Con board or defective LCD panel. The panel is more expensive than the TV, so hope that it is the T-Con board. Below is a parts list for your TV model.

http://www.tristatemodule.com/t-Search.aspx?q=KDL-40S2010

Nov 03, 2013 | Sony BRAVIA KDL-40S2010 40 in. LCD...

1 Answer

Sony KDL-40WL140 vs KDL-40Z4100


KDL40Z4100 Product Features
  • 16:9 Full HD 1080p Resolution (1920x1080p) LCD Panel
  • Motionflow 120Hz; improves TV & DVD viewing
  • DMeX compatible; allows seamless feature upgrades
  • DLNA® Compliant - view photos from another room
  • HDMI x4, HD Component x2, PC Input
Technical Details
  • Brand Name: Sony
  • Model: KDL-40Z4100/B
  • Display Technology: TFT active matrix
  • Display Size: 40 inches
  • Image Aspect Ratio: 16:9
  • is_hdtv_compatible: Y
  • speakers_included_description: 2 speakers
  • Height: 23.9 inches
  • Width: 37.2 inches
  • Depth: 2.8 inches
  • Weight: 39.7 pounds
  • Refresh Rate: 120
KDL-40WL140 Product Features
  • 16:9 Full HD 1080p Resolution (1920x1080p) LCD Panel
  • Motionflow™ 120Hz - clear, smooth motion for DVDs, TV
  • DMex ™ compatible; allows seamless feature upgrades
  • Enhanced XMB™ with 3D graphics incl. TV Guide
  • HDMI™ x4, HD Component x2, PC Input
Technical Details
  • Brand Name: Sony
  • Model: KDL-40W4100
  • Display Technology: TFT active matrix
  • Display Size: 40 inches
  • Image Aspect Ratio: 16:9
  • is_hdtv_compatible: Y
  • speakers_included_description: 2 speakers
  • Height: 25.4 inches
  • Width: 38.8 inches
  • Depth: 4.3 inches
  • Weight: 44.1 pounds
  • Refresh Rate: 120
Bottom line for the extra connectivity and DLNA certification i would go with the
Bravia Z-Series KDL-40Z4100/B 40-Inch 1080pBecause if you connect this to your in home network you can stream music videos and music off you PC onto your TV without the need for extra wired or memory cards etc.

Otherwise if you don't need this feature the other options are identical on the other TV so it is just as good a choice.

May 25, 2009 | Sony Bravia Z KDL40Z4100 TV

1 Answer

Sony Bravia KDL-40S20L1 lcd tv has no power no lights nothing


My Sony Bravia LCD Model-KVL37S400A is not getting the Main Power supply. The LCD is not getting switched on. When i am trying to switch on the set nothing is happening.

Apr 20, 2009 | Sony BRAVIA KDL-40S2000 40 in. LCD HDTV

2 Answers

Sound problem


Go into your TV settings and change the Automatic Volume Control Sound Mode. It's probably at Dynamic and the TV is trying to adjust the volume. The popping sound may be caused by static electricity building up on the circuits of your TV or cable.

Does this also happen when you are watching a video/DVD?

Nov 27, 2008 | Sony BRAVIA KDL-46S2000 46 in. LCD HDTV

1 Answer

Sound


Set your SAT receiver to full volume and use your Sony TV volume control as the master volume control. If you use an external surround sound amplifier do the same thing using the amplifiers volume control as the master volume control.

Consider that all source devices that have the ability to control their output volume will output what they call line level 0dB when the source device is set for maximum volume. If you set the source device to 1/4 volume your output to the amplifier may be around -25dB or lower. Introduce that low of an audio level to the amp and you will have to turn the amp up to half way or better causing the amp to amplify noise too.

Jul 04, 2008 | Sony BRAVIA KDL-40S2000 40 in. LCD HDTV

1 Answer

Sony Bravia


I have purchased KLV-40W400A Full HD but I am not satisfied with the picture quality. When the issue was raised sony is putting blame on Tata Sky and vise versa.
Kindly suggest.

Jun 19, 2008 | Sony BRAVIA KDL-40S2000 40 in. LCD HDTV

1 Answer

Sony BRAVIA KDL-52W3000


I would take that puppy back to store and get exchanged out. According to lemon law. Let me know what happens. Thank you Jay.

Jan 31, 2008 | Sony BRAVIA KDL-40S2000 40 in. LCD HDTV

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

28 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74136 Answers

Cindy Wells

Level 3 Expert

5103 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...