Question about Sony Bravia KDL-40V4100 40 in. LCD HDTV

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I have a Sony Bravia KDL-40v4100 sound but no picture. . replaced the t-com board. now I think its the mother board . Sound still no picture.

I replaced the inverter board and the t-com now I will try the B U board. or mother board.

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6ya6ya
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Posted on Jan 02, 2017

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vinnyq
  • 157 Answers

SOURCE: sony bravia kdl-52w3000, turn tv on, no picture or

Most likely this is caused by a defective main board. Changing the main board will fix the issue about 95% of the time.

To be absolutely sure, the voltages need to be checked on the power supply. If they are not the values listed in the service manual, then you should replace the power supply instead (accounts for the other 5% of the time).

Posted on Oct 07, 2009

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SOURCE: 2 years old Sony Bravia KDL-52W3000 flat screen- I

The caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in....Have fun becoming an overnight tv mechanic lol! ..Here is a picture of what you are looking for inside the tv...I hope this helped, if it did (or not)please rate, thank you!9441f5a.jpg

Posted on Feb 03, 2010

tvhelp-Dave
  • 178 Answers

SOURCE: Bravia KDL-46VL130 TV: Our Sony KDL-46VL130 picture is streaking and some...

That symptom may cause by the main board or t-con board, I suggest you do software up grade first.

Posted on May 07, 2010

  • 1 Answer

SOURCE: sony bravia kdl 46s4100 no picture

it sounds like your back light might be going out. You might be able to fix this by installing a new backlight inverter board.

Posted on Aug 05, 2010

  • 1 Answer

SOURCE: Sony Bravia KDL-46S4100, No Picture

I have a sony bravia kdl 40v 5100 for less than two years and i did not purchased an extended warranty and now my tv is down.
I have no picture, no sound just a black screen when i turn the power on, the power (green) light is lite up and the tv turns off by itself for like less than 30 seconds. I have tried to press as many buttons on the remote control and on the side of the TV to get any message but nothing seem to happen. Any suggestions and solutions? Thanks

Posted on Aug 30, 2011

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Sony bravia KDL 40S4100 No picture


If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Troubleshooting procedure for No-Picture is given in detail.

Sep 06, 2016 | Sony Bravia KDL-40S4100 40 in. LCD TV

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Looking at a negative screen


Sony Bravia KDL-40V4100 models have a problem with the screen going blank, faded or washed out ( negative ghosting) . It is caused by a bad chip on the T-con board. A replacement chip is available from shopjimmy.com (Sony 55.40T02.C08 T-Con Board Component Repair Kit) for $14.95- If your not an excellent solderer, send your board to them for a repair $69.95.

Feb 11, 2014 | Sony Bravia KDL-40V4100 40 in. LCD HDTV

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Sony bravia kdl-40v4100 . The standby light is flashing red 2 times an television and there is no picture or sound . Relay dls1u an power supply board is clicking on/off .


Two blinks denotes an over-current protection. If you wish to get more details about the blinking codes to Sony TVs, check this site. Details are there. http://electronicshelponline.blogspot.com/
Pull up previous posts by its left sidebar, or type in the brand name and model number to of your set, to its search box, and press 'Enter' or view it in Mosaic / Timeslide option.

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1 Answer

Sony Bravia - sound pulsates off and on - several minutes on and then 10 seconds off. We checked cable box and HDMI cord on another TV, and sound was fine, so narrowed down to the Sony Bravia.


Actually try one more thing before concluding that there is something wrong with the sound board or one of the wires in it on this Sony Bravia television. The cable box settings might not be just right for this television. Are you currently set to pcm or bitstream on this cable box? pcm might also be displayed as 2 ch 48 or 96 khz. Play around with the sound settings and see if one or the other will solve this sound issue before writing off the television.

Dec 01, 2012 | Sony Bravia KDL-40V4100 40 in. LCD HDTV

1 Answer

Black screen w/ my sony bravia KDL-40V4100 and it will turn on, but there is no picture or sound. I was told it could be a possible issue w/ the kdl 40s4100 board, but I'm not entirely sure. I've...


If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Apr 10, 2017 | Sony Bravia KDL-40S4100 40 in. LCD TV

1 Answer

I have sony kdl-46sl140.picture is blinking a nd channels and volume is disabled.


It could be something like an ETC-inverter board, or the power board. I have the same TV with a cracked screen. Are you interested in selling yours?

May 12, 2010 | Sony Bravia KDL-40V4100 40 in. LCD HDTV

1 Answer

I have a Sony KDL-40V4100, constantly hearing clicking noises


Could be the power board or main board defective, but I suggest you do firmware update first. Go to http://esupport.sony.com/US/perl/swu-list.pl?mdl=KDL42V4100&LOC=3#div_pos_30 download the software.

May 08, 2010 | Sony Bravia KDL-40V4100 40 in. LCD HDTV

1 Answer

Sony bravia KDL-40V4100 audio and picture cycling on and off


I'd say about the blinking to a black screen would be your cable provider. As for the stripes that means that your board panels can be going bad, you can try updating the firmware of the TV to help but if that doesn't work you're getting very close to full failure on the TV.

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Sony Bravia TV automtaically goes on standby.


Probably the main board. This has a 1 year mfc parts and lobor warr. I would contact Sony for the nearest auth servicer. If you open it you will void the warranty.

Apr 23, 2009 | Sony BRAVIA KDL-40V2500 40 in. LCD HDTV

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Clicking sounds when turning off Sony bravia kld-40v4100


ACTUALLY WITHOUT SEEING YOUR PROBLEM PHYSICALLY I CANN'T SAY ANY THINK, BUT FOR YOUR KNOWLEDGE LET ME TELL YOU NO TV MAKES ANY KIND OF SOUND DURING SHUT OFF. & you are saying for more than 30sec, i think you should call the SONY TECHNICIAN for visit.

Dec 20, 2008 | Sony BRAVIA KDL-40V2500 40 in. LCD HDTV

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