if you click on the pictures it will enlarge them, to me the distortion is quite visible in both pictures, its the grey/shaded patchy areas on the sides
anyway, the problem with these TV's is usually related to TAB's losing connectivity between T-CON module and the LCD glass substrate, check the picture I attached; the red arrows are pointing to the exact area where TAB's become "loose".
You can apply slight pressure with your finger to each section at the time until you find the offending one...
This will require work with mains powered TV where the voltages could kill if one is not careful, so avoid doing this if you haven't played around modules that have lethal voltages... Module you have to be very careful with is the power supply module. You've been warned!
I have the european KDL-46X3500 model and can confirm that this solution works perfectly.
The problem has been happening intermittently for the last few months (set is just over three years old and outside warranty of course).
The problem was very similar to JM8000 previously in this thread with the horizontal lines and ghost images down the right of the screen.
After stripping the TV down it was indeed the top right tab (as you look at the screen) that was the culprit.
So I cut the bumpons down to size and placed then in the groove of the metal frame to fit exactly over where the tab lies.
Put everything back together and not a flicker since.
So problem solved, good as new and no hefty call-out / replacement charges to contend with.
Thanks again OnlyTono and also to NipRing for the helpful video.
To minimize danger, can you just put tabs on the ones you think are the problem and do it trial and error?
I don't want to: 1. get zapped, 2. kill me tv any more than it already is.
Anyway after removing the unibody case, I unscrewed a few screws at the top on the front of the screen and pulled the metal frame back a bit to reveal the troublesome flat cables going into the LCD. After 30 minutes of poking at them with the display on as suggested in this forum, I still had no luck. Then I bravely decided I would get a metal screw driver and randomly slide it along some of the gold metal contacts and the solder joints of the tiny components near the flat cables. The image on the display went crazy but after a few seconds of random short-circuitry I saw a perfect stable bright image!!! The image stayed perfect even after turning the screen off and plugging into another PC!! I dont know how I managed to jiggle some electrons around to make it work but it worked perfectly now! Re-assembled the screen and its working fine now.
Thank you very much for you help guys.
The TV really should be on in order to identify the faulty tab.
As it will be on its back at this point most of the exposed circuits will be underneath.
The tabs get hot but do not appear to be live as I gently prodded them all and am still here
But they are not removable.
Proceed with caution at your own risk and good luck...
sony replaced the whole TV.
friend gave me the broken one. (SCORE)
used two layers of foam tape.
Has been working for five to six hours.
Wish some of the original posters could let us know if they are still working after all this time
I am having an issue with my Sony Bravia XBR5 television, i have a tiny vertical line (Magenta Color) from top to bottom at 3¼"in. of the right edge of my 52" Tv. LCD panel.
I bought that Tv Set on 03/30/2008, so it's 44 months old.
I did have a Sony representative technicien look at my television for $141,00 dollars for the evaluation.
He told me that i had to change the 52" in. LCD panel for a total evaluation of $2,400,00 dollars.
Here in Canada , Quebec Province, we have a Consumer Protection Law that sawing when you buy expensive appliances it should last a certain period of time proportionnal to it cost and fonction of a normal lifespan.
CanLII (Canadian Legal Information Institute)
Consumer Protection Act, RSQ, c P-40.1
Goods forming the object of a contract must be fit for the purpose for which goods of that kind are ordinary used.
1978, c. 9, s. 37
Goods must be durable.
Goods forming the object of a contract must be durable in normal use for a reasonable length time, having regard to their price, the terms of the contract and the conditions of their use.
1978, c. 9, s. 38
I am waiting a proposition from Sony about this issue.
I might have to use that Consumer Protection Law against Sony.
I'm seriously thinking about taking them to Small Claims Court.
Isn't that warranty only for 46" sets?
After reading this thread, I think I made the mistake of trying to swing up/out the front metal frame (TV still standing up on its stand) with that piece of conducting foil still attached to the TCON cover, instead of removing the foil and removing the frame completely. I think that may have shorted my TCON causing my screen to go white.
However when the screen was white, I noticed the faint images on the screen got sharper when I touched the tab on the far upper LEFT of my screen. So hopefully the new TCON board I just ordered will fix the white screen, and then I can once again address the dark screen issue with the tabs.
(Toshiba 46rv530u - manufactured in may 2008)
Started with vertical lines at startup, they would go away soon after turning the tv on, so I never thought much about it at the time. Over time it got harder to clear and then symptom 2, flickerin horizontal lines and ghosting, again it would go away after a few minutes from turing the tv on. it would keep taking longer to clear though. Recently it never cleared and I started to reasearch online.
I eventaully found this post and decidead to try the fix. My toshiba took time to figure out how to disassemble and get the LCD panel out of the housing. I did make it to the ribbon cables, and ofcouse the bad one was in the same spot upper right corner. For the shimmy i used a couple of cut in half pen grips.
This fix does work for my tv.
Have some photos I took , will try to post those at a later time.
what exactly do they do? do they put an entirely new lcd screen in?
Please see the youtube video - does it look like the problem described in this thread?
I want to apologize straight up for hi-jacking this thread... I know it's the cardinal rule of forums... you can stone me later if you like!
But I've asked over 30 people (repairmen and 'experts' alike) for an answer to a question and NO ONE can give it to me straight!!
If ANY of you could shed some light on my issue with my Bravia, I would be SO incredibly tickled! It seems to mirror the symptoms OnlyTono had, but it's not the same problem!
EDIT:: Sorry for posting twice! I added to this thread at first, then directly responded to the thread starter post not realizing it was the same action! I can't figure out how to delete on of these posts! Sorry guys!
Question: When you first booted your TV up, did you notice if the Bravia logo was affected by the darkening??
My symptoms match yours to a "T", but I've tried the TABs and to no avail.
I noticed that my Bravia logo is completely fine, even though it's located in the same spot that appears 'broken' later.
I've started a thread on this phenomenon, and would love some input!
My TV not working properly has been bugging me for two years but the warranty having expired and not being able to replace it just now meant I had to stick with it. Good thing I looked up if someone had a DIY solution. Too bad I didn't look it up 2 years ago
I had the exact same symptoms : either slow pixels and a darkened left side of the screen, or horizontal lines and mirror images still on the left side. And slightly tapping the upper left side of the tv would switch from one symptom to the other. And sometimes after hours turned on, the tv would just start working normally until we switched it off... (Remember the Friends episode with the free porn where Joey and Chandler dare jot turn their tv off ? Same thing ^^)
Opening the TV set isn't too hard if you've already had fun playing around with a screwdriver (just don't forget to bin sort the screws ). The only hard part was putting the television face up without any electronic components on the back touching the table it was on and the solution I found was using a square wood base of approximately the size of the wall mounting structure on the back of the television which is obviously very strong and place tv on it. Once the panel was opened, the faulty connector is easy to find and fix. And the fault is obvious: in my case pushing on the connector shows a bubble of air appearing between the glue and the connector.
Just FYI, the tv is a Sony KDL-46W4710 (a variant of the 46W4500 series).
So again, OnlyTono, good job on daring to open your tv in the first place, and all the others for the additional input. I am ecstatic \o/
Greetings from France.
I got everything apart just fine and discovered that applying pressure to the ribbons definitely fixed it if I got them perfect. I turned the TV off and unplugged it to get some supplies for the fix and when I plugged the TV back in the LCD just stopped displaying anything. The power light will turn green for about 10 seconds then go to the standby blinking light, which in my case blinks 5 times. I looked it up and this means "T-Con Error". Now I'm trying to figure out how it couldve have went from working perfect to not even turning on? I starting double checking everything and noticed that there were 4 clips total on the top that holds the metal frame to the inside rack. I had only removed 2 because the others were hidden. The remaining two were laying directly on top of the boards that the LCD ribbons connect too, not the T-Con but the boards connected to it.
I know it's possible that could have shorted out those boards or the T-Con board but is it very likely? Any ideas what else could have happened and how I can test it to make sure?
I ended up fixing the dim side/pixel refresh problem very briefly before I think I accidentally shorted the TCON board. I'm having the exact same symptoms as Dillon above now. The LED and sony symbol light up, but nothing on the screen, after about 10 seconds it goes to the standby light. I ordered a new tcon board and I'm going to try to replace it and see if that rectifies the problem.
For those who are going to try to replace the TCON board, this guy at http://www.gotosnapshot.com/myblog/sony-kdl-52xbr4-t-con-ub1-replacement wrote some pretty good directions on how to access it.
Will update if it works so anyone else checking this thread can have a reference.
My Samsung LN40A650A1F (LN40A650A1FXZA) 40" LCD TV was a hand me down from my father in law because it had developed some screen problems.
When I initially received it, the TV had multiple images, expanded vertically upon startup, which then dissipated after 5-10 minutes of warm up. We lived with it like that for 6 months. However the problem became worse with left half screen dimming and some number of thin colored vertical bands running down the left side of the screen. This new problem would appear after the set had been on a few minutes, and in the early stages went away after 30 or so minutes. We tried just leaving the set on 24x7, but eventually the second problem just stopped going away.
Following the examples here and also on badcaps.net, I purchased some heat conductive compressible foam on eBay (Thermagon T-Flex 6100 highly Compressible Gap Filling Interface Pad 47mm x 66mm) for $3.74 including s/h. I opened the TV and removed the metal frame on the LCD panel. While running the TV for at most 1 minute at a time to avoid overheating damage, I found that pressing down on the left most (as viewed when looking at the TV in the normal orientation) tab bonded flexible circuit, between the in-line driver IC and the glass panel edge, cleared the picture up for the most part. It seemed like the right most tab bond also had some effect on the picture. The 14 flexible circuit tab bonds in between had no effect on the picture when pressed on in various ways, so they seemed very solid. I cut two roughly 8 mm strips across the short edge of the Thermagon pad (so roughly 8mm x 47mm), peeled the backing off both sides, and applied them on top of the flexible circuits at both ends, aligning with the edge of the glass. In this position they partially overlapped the position of the inline integrated circuit, however I do not think the placement of the pads was particularly critical. I replaced the metal frame and tested the LCD panel and it had a perfect image again, which remained without any problem after I finished reassembling the TV.
A couple of minor notes.
1) I did "break and remake" the contacts on the cable from the main control board to the TCON board on both ends, and also on both ends of each of the four short ribbon cables from the TCON board to the signal distribution board. It had absolutely no effect on the LCD image when I powered it back on.
2) The metal frame on my LCD panel was attached to the LCD by the 10 smaller silver screws from the front (image side), and also by three screws (M4-0.70 x 12mm) black machine screws that attached it to some other metal frame parts at the bottom. But there were 10 other screw holes on the sides for attaching the metal frame to the plastic LCD frame that did not have screws in them. I decided that adding these screws could only make the overall panel more rigid, and perhaps reduce flexing that might cause more problems, so I purchased the additional screws (M4-.70x12 oval head Phillips) at Lowe's and added them. There were no problems with clearance of the heads when reassembling the TV. This step was probably unnecessary, but I thought I would simply let folks know that you can do this without damage. Don't use longer screws, cause that could potentially cause problems.
So thanks again to OnlyTono and NipRing and others for providing this information. Saved this TV from the landfill.
Hello. My dad and were fixing our 46 in. xbr 4 just now. We stupidly left the TV on when we were pulling of the last silver layer over the tabs. I guess when we were pulling it up one of those metal tabs made contact (like how OnlyTono says in description to prevent with the wooden dowels). So the picture went out, and now we have the layer completely off and the tabs exposed, with wood blocking the metal tabs from touching, and are unable to get a picture. When you first turn the TV on, it makes the usual 'click', but no picture. Even when turning it on and off you only get a click the first time you turn it on (probably not important information). So i guess we did damage to the t-con board like OnlyTono said? I was just wondering if anyone has any advice on what would be our next step. I don't know if we can replace the
t-con board or something, just please get back to me.
|Sony Bravia Xbr Kdl 32xbr4 32 Lcd Hdtv , Sony Bravia Xbr Kdl 52xbr4 52 Inch 1080p Lcd Hdtv , Sony Bravia Xbr Series Kdl 40xbr4 40 Inch 1080p Lcd Hdtv|
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