3 Answers. Well, the symptom shows that there is a video signal defect in the TV.You could test it step by step as follows. about 3 months ago the tv started to turn off randomly.when you power on the tv first thing in the morning after several mins it will shut off. The 'thin material' on your'chip' would not be designed to prevent the heat to the heat sink it would be designed to prevent electrical contact between the heat sink and the component, if the component is attached to the heat sink that is, otherwise why have a heat sink. If you’re lucky, it could just be a blown fuse, which is easily replaceable. I had a look at one, (didn't know if it was the right one but would be close enough)and it had flow charts of what to look for which may be of some help, © 2021 iFixit — Licensed under Creative Commons — Privacy — thank you. Remedy: Check that Scart connections are pushed fully home and that the Scart plug has not come out on one side. The sound is all right but the creen is pitch black. Turned it on Friday morning and now all I have is sound and no picture. Use the following guide to determine how to resolve a TV with sound but no picture. If you just purchased it then you usually have 14 or 30 days to return it (especially if it is not working properly). No LG. Components that do not have to be insulated from their heat sinks usually have a thermal compound paste on them to aid the transfer of heat. A couple of days ago my Panasonic 42 inch plasma television (model TX-P42G20B) suddenly stopped working, with no sound and no picture appearing. My 2 year old plasma TV has suddenly got no picture but the sound is OK. User Likes Count BogaMoge. With a couple of DVD players connected to the AV inputs, you can power-up the set and select the input you want all with the remote control, however, there is no picture at all. Plasma has very short life span, and it's out of production. (until connected wirelessly) OLED TV : within about 15sec. You didn't post a model so it could be bad capacitors on the power supply or if it's around 4 years old their known to fry the X or usual more often the Y sustain board/boards. A common problem TV you might experience is a lack of picture when you turn on your TV. Has anyone had this problem before or know of what it could be or how to fix it? Videos. I unplugged everything, tried to reset it, no good. ※ LCD Wireless TV : 17sec. Will great to hear from you soon as you can thanks. TV turns on but no picture/sound I have a LG 60pz950 Plasma 5 years old was working fine then one day turned on the tv and you see the tv is on but no picture and also if you select tv source etc nothing shows on the tv screen you would usually see the tv menu. Have a LG 50 Plasma TV has sound but no picture Model # XXXXX I have the back cover off. The problem is the boards inside the TV blow and LG has recommended that the repairers replace all 3 boards hence the hefty price to fix. Power led goes from red to green and stays green. Please advise Thanks LG plasma tv no picture just sound? PLEASE HELP!!!!!! Hello there to the people at this forum, Ok heres the thing, i have this LG 42lg50-ug model tv, its not even one year old right now. It has been working fine until last Friday, when I turned it on, there was no picture, only sound. Top Liked Authors. All voltage test okay but still not working. 2. What brands/models should I look in to? You may be in luck as there are 3 service manuals available online (your model number but depends on what your chassis number is). In addition question can the logic board be blinking when buffer board are disconnected? Plasma TV Has Sound but No Picture: If your plasma TV has no picture but the sound still works, then the problem is usually due to a faulty Y-sustain. Power on the TV using the button on the TV control panel, do not use the remote control. Buy LCD. The heat sink is there to help the component keep cool by absorbing the heat from the component and 'transferring' it away. Try using a different cable to see if your TV picture is restored. Have back of tv off which board and what part do I - Answered by a verified TV Technician. Relevance. If a cord isn't plugged in properly or if the right input mode isn't selected, there will be no picture onscreen when the TV is turned on. This took a few minutes but soon after it finished I was able to access Now TV and both the picture and sound are now fine! My TV has a sound but no picture. Accessibility. I had LG plasma and few other things manufactured by them. Any suggestions? Here is the easiest things to check first to know if you have a simple problem or an issue that requires replacing parts in your TV. I had the opposite problem yesterday with no audio. There is a thin material that I guess prevents the heat which sits over the chip then a huge heatsink. we were watching it and all of a sudden the picture went blank!! picture flashes on for a sec than backlite goes out, still has sound. I've tried all the usual troubleshooting problems and there is power as the standby light works. TV Screen Is Black – Powers ON But No Picture. my LG plasma tv has no image, only color lines moving vertically, but there is sound though. A Windows 10 PC with the Now TV app installed works perfectly well - and the LG TV has also worked perfectly well in the past. Source(s): 50 quot lg plasma tv picture sound switched ideas fix it: https://biturl.im/UGacB. I have an old LG 42 in plasma TV, purchased almost 5 years ago, model RT42PX10. Plasma died in less than a year. Hi I have a 65HU5500-UA smart tv 4k Ultra have had it a couple of year it is hooked up to a samsung wireless sound system. Plasma televisions do not have bulbs or lamps inside of them, LCD's do. Unplug the buffer and power the TV. Had my LG 32″ Smart TV for just over 12 months only had it on a couple of times. Post Reply Featured Video. If yours is one of those just go to the website and download it. You'd get spots with faded colors all over the screen soon. This is an LG Plasma screen TV. This is common with these tv's. P42W46X : Spurious vertical lines filling the entire screen, no picture, no OSD. I have a 5yr old LG Plasma 60PA6500-UA tv. Can some one let me know what I can do? What is the fix. Most LG TVs have what is called the "LG picture wizard". Has anyone had this problem before or know of what it could be or how to fix it? LG is shitty brand. We took it to an LG repairer and they said $350 and up to $500 to fix it. Son was playing PS3 for five hours and the screen went black. And now the the tv has no picture at all. Bummer. PLEASE HELP! Just the sound and backlights work. Remove the Z-sustain and power the TV. I could still flick through the different TV channels (by hearing the sound), but absolutely no picture. See picture attached. . I already checked all the cable connections so … Do you think its worth getting this repaired? 05/23/2018 by ~ 20sec. we were watching it and all of a sudden the picture went blank!! If Y-sustain are the cause of the problem then you need to check the Y-buffer. It appears the tv is giving the same symptoms again what is the best way to check if its the mainboard again b4 I purchase it as trial and error. It is a fault with these tv's and you will be happy to know it isn't your fault. We are housesitting at the moment where there is an LG plasma tv.It is connected to foxtel. LG TV Has Sound But No Picture. ... Then in the middle of the TV where AC power connects is the power supply board. If the sound works then Z-sustain is at fault. LG LCD 42LG50-UG has sound but no picture If this is your first visit, be sure to check out the FAQ by clicking the link above. Get your answers by asking now. No Picture on the TV (Sound is OK). Any ideas to fix it? I have a LG 60pz950 Plasma 5 years old was working fine then one day turned on the tv and you see the tv is on but no picture and also if you select tv source etc nothing shows on the tv screen you would usually see the tv menu. 42PJ350 : Service caution : 32LB9D : dead set. Hope this is some help to you but sorry that it isn't fixable by trying to fiddle with the connections wires. Pleaseeee help me. We just had the same problem with our LG plasma tv. Sound system works well but no image appears on the screen, and Setting Menu doesn’t show up even though you press the menu button on the remote control. Not sure what type of 'chip' that you are referring to but if the material on yours was designed to electrically insulate, (not thermally insulate) the component from the heat sink then you should look up 'mica insulator kits' for the particular type of component. I felt the heat sinks on each board. If you feel the TV's HDMI is correct (TV's can have 2 or more HDMI inputs).... Swapping cables is the cheapest approach. oidentity777. 0 Likes Reply. We use cookies to give you the best possible experience on our website. Does the cost of the TV make it a better TV? Join Yahoo Answers and get 100 points today. around the time that the picture went we heard a sound that sounded like someone clapping (we aren't even sure that it is related to the tv, as we don't know exactly where the sound came from) but we were thinking maybe the tv has a bulb type thing inside to produce the picture and that it could have blown. the sound is still fine, but no picture. Bought another Power supply tested all voltages okay have changed the 2 Buffer-boards and the Y-board still not working. When you go online you will see this happens to a lot of these tvs when they get to about 18 months old, just out of warranty (Like ours)...isn't that just the way. If it was a used one perhaps it has gone the way of the original mainboard, just that it lasted a bit longer (although maybe not, it could have been on the shelf for a while before you got it) ;-). Aside from that, it could be any number of problems...impossible to diagnose without seeing it. But if not, you might have to replace the entire Y-sustain. Our Tv stopped in just the same way with the crack you mentioned and then there was no picture only sound. Now no picture but have sound. I assume that the latest software update had not completed successfully. no 5 volts : DU42PX12X Problems with LCD or LED TV displays are sometimes caused by a faulty HDMI cable. We are housesitting at the moment where there is an LG plasma tv.It is connected to foxtel. Thanks. Apple Watch Series 3 (GPS) requires an iPhone 5s or later with iOS 11 or later. Does anyone have a recommendation for over the air TV antennas? So I have a LG 65UJ6300 and it previously worked fine. What part would cause this and can I repair it myself? The sinks on the middle board are not warm at all. Hi all. Anov. To clarify is your sound from the HDMI, or from the Digital Optical out? But the backlight array went bad so I had replaced them. I am not sure what more that is so thin I can put to prevent this from dying on me this time around. Picture quality isn't that great, but it's consistent quality. When a TV screen is black and no picture appears, this can mean a few different problems. The mainboard replacement corrected the issue. Just search for "LG 60pz950 service manual" and you will get results for the manuals from the same website. Still have questions? My 32' LG LCD TV has suddenly lost picture! Philips LCD TVs are no exception. I checked the fuses are good. If picture is seen then the sure shot cause is Y-sustain. 50 inch LG Plasma TV has sound but no picture. The LG was $1500. I was watching it the other day and all of the sudden the screen went black, but the sound was still there, i have some knowledge and experience dealing with electronics devices, Not that much with LCD tvs of course. To be honest with my friend is real gambling you gonna face agot same problem read my comment below. You will need proof of purchace. 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