Having problems with your Flat Panel Televisions ?

I have a DP46848 LCD HD TV, over a year old. The picture appears to be made up of several individual panels, maybe 12 or 16. Anyway, after it has been on for 5 or 10 minutes, parts of the picture get darker. No gone, can still see it, but very dark. Seems to be the bottem 2/3 or 3/4 of the screen and only the left 2/3 most of the time. This comes and goes for maybe 1 or 2 minutes, then it is OK from then on. It will occasionally do this again later, again for a minute or 2, but normally just the



Answers :

Hi crwalke,\015\012
\015\012This symptom indicated of bad filter electrolytic capacitor in the output of the power supply feeding the LCD controller board and the inverter boards.\015\012
\015\012This capacitor is not totally defective but has a high ESR value already. It will make itself stable after a few minute of operation but the symptom will get worst as times goes by. It will affect the regulation of the power supply output. Sometimes it has a bulged/dome at the top but not all. You must have a capacitor checker to determine its condition.\015\012
\015\012Another factor is a loose connections in the cable connector in the LCD controller board to your LCD panel and the inverter boards. Take it apart and pull-out the cable connectors and then re-insert. Also check the boards from bad solder joints (crack/dried/cold solders).\015\012
\015\012You have to perform the steps above to renew your unit as good as what the first time it used to be.\015\012
\015\012
\015\012Hope I helped you.\015\012
\015\012Have a nice day!\015\012
\015\012Thanks for using Fixya.
\015\012

Repair Help & Product Troubleshooting for Flat Panel Televisions
You need a second opinion or clarification ? ask it in the comment box OR you can Ask Your Own Question

Tips for a great answer:

  • Please provide as much detail as possible as this will allow our members to better understand and respond to your Comment
  • If you need clarification, ask it in the comment box
  • It's 100% free, no registration required

Suggested Questions/Answers :

It is recommended you read all this kind of situations

I have a DP46848 LCD HD TV, over a year old. The picture appears to be made up of several individual panels, maybe 12 or 16. Anyway, after it has been on for 5 or 10 minutes, parts of the picture get darker. No gone, can still see it, but very dark. Seems to be the bottem 2/3 or 3/4 of the screen and only the left 2/3 most of the time. This comes and goes for maybe 1 or 2 minutes, then it is OK from then on. It will occasionally do this again later, again for a minute or 2, but normally just the


Hi crwalke,\015\012\015\012This symptom indicated of bad filter electrolytic capacitor in the output of the power supply feeding the LCD controller board and the inverter boards.\015\012\015\012This capacitor i ... Sanyo 42 in. LCD TV

PURCHASED SAMSUNG LCD TV MODEL LN40A630M1FXZA BACK IN DEC. 2008,GREAT TV TILL ABOUT TWO MONTHS AGO. TV WOULD COME ON GREAT FOR PAST TWO YEARS, THAN ALL OF A SUDDEN WHEN WE TURNED IT ON, SCREEN WOULD BE ALMOST BLACK (SEE PEOPLE,BUT NOT CLEAR AND DARK) EXCEPT FOR RIGHT 1/3RD SIDE, IT WOULD HAVE GREEN/RED COLOR FOR ABOUT TWO MINUTES AND THEN PICTURE KICKS IN, NOT COMPLETLY CLEAR AND STAYED DARK FOR ANOTHER 10 MINUTES. THEN PICTURE WOULD ALL OF A SUDDEN KICK IN LIKE WHEN IT WAS NEW. AFTER ABOUT A MO


Hi,I am sorry to hear regarding the trouble. I understand the concern, however this is a common problem with most of the Brands. I agree that Samsung customer service should accept these facts and should be willing to help the consumers. ... Samsung LN40A630 40 in. LCD TV

What's your problem?Toshiba 40E220U has sound, no picture. stand by mode maybe? How is this reset? Worked fine, screen went black after 10 minutes. Blinks light on screen, at power up. Can see bac


... Toshiba 40E220U 40" Class LCD TV

When I turn on the set, the right half of the screen is distorted. It flickers, different colors move from center to far right of screen, double images that appear as negitives and sometimes that half of the screen is very dark. Sometimes it will clear up for a second or two then go back to the problem. When the problem first started, it only lasted for approx 10-15 minutes then the picture was great. Now it takes 1-2 hours for it to clear up. Once it clears, I get a great picture. The lef


Hi,Symptom shows problem with lcd panel (screen) however, t-con board that is part of lcd panel could be defective and cause of these symptoms.T-Con board is located at top center of cld panel at rear and would be covered with metal shiel ... Samsung LN46A550 LCD TV

My LG flat screen tv is losing HDMI signal then goes black. I've tried to change to a different input but it won't change. After a few minutes of black screen it starts to flash a few times then back ti black. A few minutes later it will start connecting again and picture will come back on. Is it the tv or maybe my direct tv reciever


I have the same trouble too any fix yet ?? ... LG Flat Panel Televisions

32lg3000 When I turn on my TV, it comes on straight away, however, there is a black screen, but with some lines on it when i press menu for example. if i play my blueray red and blue lines appear on the screen, and after turning it on and off a few times it will come on, but usually only after a while (maybe ten minutes), the picture comes on perfect, and remains so with no trouble. Any advice on what may be the issue?


The power supply is erratic and likely to fail completely ... Flat Panel Televisions

I have Vizio XVT3D474SV I bought a year ago, in the last week while watching TV, the screen start to flash, display becaome white with 3 black lines and after a while it becomes black (the all time the sound stay as normal). while looking inside I see the backlight flashing till the screen becomes dark (than I do not see any light inside). After turning off and ON the TV several times I get back normal pictures but the same phenomenon comes back in few minutes. I checked all 8 micro fuses I have


When the picture is dark, show a torch light on the screen from a safe distance. If you can see the picture, the backlight is the problem. Anyhow, it is better to show it to a qualified service technician. ... Vizio XVT3D474SV 47 in. 3D LCD TV

I have a RCA L26WD26D Flat Screen TV. When you turn it on it will say "please wait". This lasts for 30 seconds or so. Then that goes off and the screen turns black with some sections turning white. It will vary the back and white and will stay like this for maybe 20 minutes. Then it will start showing vertical colored lines. They will change also and eventually turn back to black and white. After leaving the TV on for about 5 or 6 hours, the picture finally shows up and looks fine. So now I'm af


Hi coefremont,\015\012\015\012This is an indication of out-of-regulation in the power supply section. The very\015\012common caused of this fault is the leaky\015\012elec ... RCA L26WD26D 26 in. LCD TV

When first powered on the picture is very dark, returns to normal for 30-40 minutes and then has horizontal bars scrolling through the screen.


Your problem will be in the power supply of this TV. It will be the board that has the flyback transformer. You will have to pull this board out and find the vertical IC. I think it will be of the LA78XX series. You will have to resolder this IC, and ... Mitsubishi VS-60609 60" Rear Projection Television

I have a lg model pdp50x30010 plasma, 2006 while I was watching it I heard a pop then the screen went dark. Then two minutes later I heard a second pop, there is sound but no picture. What could be the problem, or which boards need replacing? Thanks Sparky


The pop you have heard from has come from the buffer boards. When one buffer boards goes back, the other goes out automatically. I suggest that you not turn on your tv as the sustain boards will be taken out as well if you do. Replacing the high and ... LG Flat Panel Televisions

Ghost picture when I first turn on tv. Lines and dark ghost images on the right side of the screen. Clears up after several minutes.


... Sony Bravia KDL-46VL130 TV

I actually have a 42' vizio and my problem is when first turned on the screen is quite dark and in about 20-30 minutes it will finally resolve itself to a regular picture. very frustrating since this tv was not inexpensive and of course it is out of warranty. i have 3 other tvs in my home and no problems ever and they are quite a bit older. i would never buy vizio again.


Y and z boards are most likely going out one or both ... seen many a vizio 42" plasma p42 model all with the same exact problem... ... Vizio L37 Television

Why does my flat screen panasonic lose picture and sound within a minute of turn on?


... Panasonic VIERA Flat Panel Televisions

Our Sony picture came on one day & after a few minutes the screen went black, the sound was still there & the stand by light was blinking away. After waiting awhile we can still turn the t.v on, the picture will apear, but after about 3-4 minutes the screen goes black with the sound still going as well as the blinking of the stand by light. It this something that easily be fix, or time to get rid of the tube & on to the flat screen. I really hate to see it go cuz we really - really love this t.


Often it is cold solder in c-board. have you tried to re-solder it..in few years of using your t.v it is normally electronics parts heats-up..then it will loose it contact from the base board or the PCB.if you have a basic electronics knowledge ... Sony FD Trinitron WEGA KV-32FS120 32" TV

My rca r52wm24 Tv turns on but after about 20 minutes the screen goes black but I still have sound. Sometimes the picture will come back up and work fine after 10-30 minutes but it will go to black screen again. Then sometimes the picture will be fine for around 20 min utes agin flash to black then flash right back to normal. rnWhennthe screen does go to black it slowley fades out takes about 10 seconds to go black


Hi mcpheeters16,\015\012\015\012First to isolate the loose connection from fault, check the cable connectors from the lamp and the ballast board. Pull-out the cables and then re-insert. Also check the ballast board from bad solder joints (crack ... RCA R52WM24 52" HDTV Projection Television

Sony tv kdl-46vl130, Turn the tv on, half of the picture is dark, leave the tv on for about 20 minutes, and the tv is perfect, and stays perfect no matter how long is watched, Turn the tv off, and come back and turn it on the picture is again dark, wait 20 minutes and the tv picture is perfect. please advise carl b. wright


... Sony Projection Televisions

I have a proview lcd screen and it palys the tv shows in back ground but it's a dark screen like dark blue no picture. Volume and everything working but just no picture. What can i do.


Show a torch light on the screen for a distance, and if you can see the picture, the backlight is not lighting up. Check for its settings on the remote, if you have that option. Check also the settings of brightness/contrast/sharpness/color. If ... Proview PA-37JK1A 37 in. LCD Television

Panasonic PT-56LCX66 replaced bulb 3 months ago, now tv shuts off itself for a minute and the picture is dark again. It could happen every 15 minutes or every 3 hours.Not over heating. No warning lights or codes. Picture seemed dark from new, after bulb replacement was a little brighter until it shut on its own.


... Panasonic PT-56LCX66 56" HDTV

Picture problems Upon startup, the right 1/3rd of the screen has a trailing rainbow effect. This sometimes clears up quickly but sometimes takes hours. When it does clear up the picture is perfect. Then if I shut it off the whole process starts again. sometimes when the rainbow effect subsides the right side of the screen gets very dark almost black and the picture cannot be seen on that part of the screen. Is this a simple component that can be replaced of is it something more? I love the pict


A general answer is:Most sets like this one use two boards to drive the screen--in this one there is one for left half and another for right side.Different brands use different names like inverter, etc but it seems issue is on right s ... Flat Panel Televisions

Dark Screen When I turn on TV the left side screen is dark and blurry. TV warms up left side screen blurry, has trails. Left side looking at TV. Rest of TV screen seems a little darker. Found the other day when I cleaned the screen it went to normal after a few minutes. This did not last after turning TV off. Any idea's


It sounds like a back-light problem. Check all the CCFL back-lights. ... Samsung LN52a750R1FXZA

I have a LG 32LH30 TV. When I power on the TV I get a picture in the top half of the screen and vertical lines in the bottom half. Also I get a thin white dashed line across the middle of the screen. After about 10 minutes I get full screen picture. However the top third of the screen is lighter than the bottom two thirds. I still have the thin white line across the middle of the screen. I am using HDMI cables from my cable box. I also tried Audio/Video and Component cables. I took the back


... LG 32LH30 32 in. LCD HDTV

Hi, I purchased a Sony Bravia model #KDL-52S4100 two years ago. About 7 months ago when the TV was turned on there was no picture for 15 minutes or so, then when you turn it off and on again half a picture will show with larger images on the right hand side of the screen. Other times there is half a picture and then when you turn it off it will come on with a full screen picture. Once it warms up the picture is fine. Is there any inexpensive solutions here? Thanks for any help you can provide.


There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both.Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.If you ... Flat Panel Televisions

When I turn on my WS65611 rear projector TV the picture comes on perfect but after a minute it starts going static then the picture will come back on then it goes stactic. This continues for as long as the TV is on. When I get the menu to appear on the screen, the picture will stay perfect,, however the menu screen is in front of the picture.


A few things you could and should try, try something on a different input if you are using the coax connection just to know if problem exists that way, could be a bad tuner but that can be got around, also if on all inputs the set does have a hard r ... Mitsubishi WS-65611 65" Rear Projection Television

LCD television starts normal, but after 2-3 secs, the screen turns black and remains black, no picture, but sound is still there. All cables have been checked - all possible input channels have also been tested to see if they produced any images onto the screen. When i look in a dark room to the black screen (with a flashlight), you can see (but very hard to see) some grey images (tv pictures) moving over the screen. I've read onto this very interesting website that on some models, one c


... Samsung Flat Panel Televisions

I have a SANYO DP46848, 46 inch flat screen hdtv purchased about 2 - 3 years ago. The screen goes dark on the left side (top .25% is ok). It sometimes fixes itself after an hour or so. Sometimes you can fix it by placing your hand on the dark spot for 10-15 seconds. There is a thin horizontal line about 1/4th of the way down from the top with the top of line ok when the bottom of line area goes dark. LCD Controller? or Main Board? or Power Supply or the Panel itself? I have a picture if that


Ray I have just about the same issue . But my only problem is the thin black lines. Do you think cleaning the flex cables coming off the Tcon will help at all? This is the same model DP46848 ... Flat Panel Televisions

A detailed question is important to get you a relevant answers

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
all rights reserved to the respective owners || fullblownbass.com || Terms of Use || Contact || Privacy Policy
Load time: 0.2146 seconds