Having problems with your Flat Panel Televisions ?

I have a Samsung LN40 b500 P3F. When I turn on the TV, the backlight flashes three times then goes dim. I know the TV still has a picture cause when I hold a flashlight to it I can still see the picture. I checked the connector on the powersupply that connects to main board and all voltages are there. I will load a video later. please. tell me what to check next.



Answers :

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 Samsung LN40 b500 P3F. When I turn on the TV, the backlight flashes three times then goes dim. I know the TV still has a picture cause when I hold a flashlight to it I can still see the picture. I checked the connector on the powersupply that connects to main board and all voltages are there. I will load a video later. please. tell me what to check next.


... Samsung LN40B500 40 40" HDTV LCD TV

My Pioneer PDP-5060HD has suddenly quit showing the HDMI picture. The TV menus and dialog still show on the TV. When I connect my Apple TV it says I have an HCDP error. A Pioneer Authorized repair place says the main logic board is bad. I see a bunch of Pioneer parts online. So 1, is the repair guy correct? and 2. what would the part number be so I can buy one! Thanks


... Pioneer PDP-5060HD 50 in. Plasma Television

I have a samsung lcd tv model LNS-4095DX/XAA. I am getting snowy particles throughout the image. The picture looks great except for the pixel looking particles throughout the screen. I have already replaced the power supply due to some bad capacitors. It was alot worse before the new part. Do you think it is the T-Con or main board that needs replacing? I checked all the connections and tried different cables to see if it got better, it did not.


... Samsung LN-S4095D 40 in. LCD HDTV

I have a 42PA30RQ RCA Plasma = Has sound , no picture, makes clicking noise when I turn the set on. I changed the main supply board, av board, logic board y sustain and x board. Still no picture, just clicking and sound. Did not see any bad capacitors.


... Flat Panel Televisions

I've a LG 32LC56 that suddenly becomes black screen while i was watching it. Since then, i was never able to get any picture on screen, even the menu picture. Sometimes, when I switch it on, i see some colored lines on the upper left screen part, but never a menu. I've replaced the main board by a new one, the problem is still the same. May i try to change the screendriver board?


Learn about T-CON board: \012http://www.scribd.com/doc/25276757/E40951307-TCON-Troubleshooting-10-22-09-OPT ... Flat Panel Televisions

I have a Sharp LC42D62u that has sound but not picture. I have done the flashlight test and can see images. I replaced the both master and slave backlight invertor boards, but still no picture. There are capacitors very close to the connection site from psb to invertor board. Could these be the problem? Any suggestion?


You take a gamble when just guess--main board turns things off and on and controls the screen ... Sharp Aquos LC-42D62U 42 in. LCD HDTV

Samsung s5053, will not turn on. clicking noise inside, screen comes on and goes off. No picture. checked voltage on pin 10 get 5 volts connector cn804-1. research on internet seems to point at main power board, but some think its standby power board. I was going to replace the PSPF501A01A board. But don't want to spend $100.00 on wrong board. Any advice will be helpful. Thank-You Ken


Ken, did you ever find out what was wrong with your set and have it repaired?I have the same "clicking" problem when first turn on the TV. First, it took about 30 secs clicking (came from the relay) then came on ok. The wait time gradua ... Samsung HP-S5053 Television

I have an Samsung PS42C451 Plasma 42" TV. I have had it for approximately 10 months. I turned it on today and I have no picture but I still have sound. This has never happened before. I can't even see anything, not even menus or volume or channel info. I have checked the aerial and all connections are connected properly. Nothing is working


I have a samsung plasma tv ps42c451 bought xmas time about two months ago it decided that it was not going to give me a guide anymore all it does is says no information for everything . ... Samsung PS42P2S 42 in. Plasma Television

I have a Sharp LC42D62u that has sound but not picture. I have done the flashlight test and can see images. I replaced the both master and slave backlight invertor boards, but still no picture.


... Sharp Aquos LC-42D62U 42 in. LCD HDTV

M228WDP-BZ - Pure white screen. Power supply board checked. Voltages through connector to main circuit board OK. Changed main circuit board without any improvement. Need to know the voltges that should be found at the connectors from the power supply board to the screen?


... LG 42LC7D-UB Television

Hi, so I was told to replace my psu by a tech because of what the service manual said. I replaced it and its doing the samething. No picture but sound. All of the readings are coming out correct. I tried to do a reset on the logic but but nothing happens. I can do a reset on the main input board but nothing happens after it resets the TV. The fan on the main input board does not come on at all. Please help. I can control channel, source and volume but still no picture.


This no picture but sound issue is not caused due to power supply. The loic control board is also ruled out because all the other functions are operational. That leaves us with two possibilities 1) Sustain board(S) or 2)Buffer BoardsIt is not p ... Samsung HP-R5052 50 in. Plasma HDTV

Phillip 50PF9630A/37. I have a red blinking 7 times after a green light. i've allready replaced the 2 bulging cap on the bottom of power supply board and also a cap on the Y board (board on the left) although i sodered it backwards with negative on the wrong side, i imediately resodered it and it sitll doesnt work. i've even isolated and unplug the y board and x board independently to see if it will still give me a blinking red lights and it still does. i've checked every capacitors and fuse on


Hello sir Jose!!!!try to unplug the y sustain only and power ON your TV..and see what happen next..Please reply to this tread for immediate help.. ... Philips Flat Panel Televisions

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

M160I Steam Shower Unit. Just installing and tv won't come on. Checked connections and electricity all properly connected and electricity running through. Also on display board inside unit after turning to radio selection on. After few minutes of radio playing a "radio" icon starts flashing on display board. Then everything freezes up. Display board controller doesn't work, remotes do not work. Have to shut of circuit breaker at main to shut entire unit down then switch circuit breaker back on.


... Flat Panel Televisions

I have a LG37LF65 LCD TV. Several month ago it broke down, at that time power supply was repaired. After a while after switching it on picture started to shake and then totally disintegrated. I have taken it back to service they said this is main board failure but since I cannot find proper board. Is It sure that is main board fault or can it be anyithing else? Can I check anything to be sure?


Check the power supply voltages to make sure you don't have another capacitor going out (the first one replaced is probably OK). Poor filtering on a supply voltage could cause the main board to misbehave. If the voltages are good, the shop tech is ve ... Flat Panel Televisions

I have a vizio vp50 hdtv20a. A while back we turned it on no picture and it started to smoke. After reading a little about it I decided to take off back panel and see if I could locate burnt part. Could not locate burnt part so repair man came and we plugged in set with back off and turned set on. Resisters on y main board started to get red and start to smoke. So we figured it was a bad y main board. Repair man said he would order part and get back with us in couple days. Three weeks later


That board directly connects to the display panel---you may have a bad display panel which if is the case is fatal---panel alone will cost more than the set did when new----seen this before in the shop where I repair sets. ... Samsung Flat Panel Televisions

Hi, I have searched all over internet and I think you are the only one who may exactly know whats the problem. I have a Toshiba Regza 37" which has no picture but sounds works perfect. The thing is if you really focus the picture is there but its too dull and dark to see it properly. Ive heard something about switching T-Con board.. please let me know which one of the boards is that(any sign or specific connection?) and where can I buy one? Thank you very much and best regards kamran


If you can see an image and it's OK - no distortions or corruption - then it's not an image problem, it's a backlighting problem. This means that the faulty part is not the T-con or any other board that works on the image, it's the inverter - the bo ... Flat Panel Televisions

Lg philips main board, ive just replaced this board as old board was stuck in service mode flashing red blue green screen, ive connected this new board an now have sound but no picture. t-con board te


Does the screen totally black or with only white screen?. recheck all the connections going to t-con board and x board which you missed. ... Flat Panel Televisions

Viera TC-P50ST30 My TV is DOA. No power, sound, etc. No standby light. Confirmed house fuse, batteries, plus, etc. good. Tried unplugging for awhile. Makes a noise when I plug in to powerstrip or directly to wall. Someone said possible short. Pulled back cover. Checked ribbon between power supply and main board. Meter reads 5 when main not plugged into power. Drops to 2-3 when plugged to main. Is that where the short is? Isolated main by disconnecting all other connections to main. Should I ju


This may help... ... Panasonic Viera TH-50PZ85U Plasma TV

My Vizio 55XVT1A power on, has sound, but no picture. I changed new power board, main board, T-cond board, but it still same problem. What's wrong with it? Is it anything with inverter board? Than


If this is an LCD tv the backlight inverter is bad, a good way to check it is to shine a flashlight close to the screen and see if you can see a faint picture.Let me know what you find ... Flat Panel Televisions

55HDS52 no picture no sound. no startup voltage on vsago and vcego connector on connector CN68 power supply and logic board was replaced and still no voltage. what create the 3.15 voltage on pin 2 and 3 for cn68 connector.


... Hitachi Flat Panel Televisions

My samsung hpt 5054x-xaa virson aq22 has sound no picture company changed main board but still say to change 2 boards and lat screen for 1299 dollars do u think any thing else wrong


... Flat Panel Televisions

I have an rca model l46wd22yx5 lcd tv no sound cant find any internal parts failure .i swap the main board and the board still no sound


... RCA L46WD22 Television

I have here sharp lc-42b45u for customer when u turn on the picture is great suddenly u see the picture getting dark then normal very fast like blinking dark and normal after while it will go all dark then come back and when it get hot it will work good u think the main digital board is bad or the inverter what else


Whn the picture going dark is happening, do you still have sound? It does sound like a backlight inverter issue to me. But lets confirm first ... Flat Panel Televisions

I have a Vizio VW32LHDTV10A that produces sound but no picture. I have checked the main power board for 24v to both backlight inverters and 24v is present. I then hooked up both backlight inverters and turned the TV on and the blue LED on the Slave inverter comes on, but goes off after only a few seconds. What further tests could I perform to check which part is defective or what component is the most likely cause?


When you reconnect the inverter boards, when the LED goes off on the inverter board, do you still see 24vdc? You shuld also ty hooking up test lamps to the 24vdc to see if it will stay on.\012Right now I have a feeling the problems are in the b ... 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: 0.2033 seconds