Get more answers from the people in your networks. There are two different power boards depending on the type of LED backlight. Learn how to resolve issues with your television not displaying a picture or only showing a blue or black screen. I did not bother with a heat shield the chip is pretty much on its own. I had the same problem thanks for this solution. © 2021 iFixit — Licensed under Creative Commons — Privacy — I am aware that this could be caused other issues. You have to start somewhere. The screen turns off (doesn’t detect signal) every 30 seconds or so. I openness the back cover and it seems all capacitor are in working order. Your Sears partsdirect expert will research your question and respond within two business days but usually sooner. Thank you for using Searspartsdirect.com! After that, press the tv/av button on the top of the set to get your tuner back on screen. Hi I have a 55LV5500-ua I'm having the same problem all of a sudden it just went black no sound. The heat cause the chip to seat to the board, giving it the contact it needs. @phonemporda. Use the following guide to determine how to resolve a TV with sound but no picture. I ramped up heat slowly, then held it for about 90sec at about 400F, then cooled it down slowly to 100F and let it sit for a while. A professional reballing should solve this definitely. (maybe my setup is slightly different as I have the 47lv5500). 01/19/2018 by 03/08/2018 by Begin troubleshooting an LG TV by navigating to LG.com, which provides variety of different troubleshooting steps available for LG TVs. Mathew Taylor-Harrison, Lluis Riba This will bring you to the "Quick Settings" screen. Has no picture or sound, cant use menu or anything just turns on & off. We'll see how long it lasts. That prevented the TV remote from working. In most cases, you will also not get any audio when you connect the player directly to the same input of the TV. You should see an option on this screen that says either "Disable SAP" or "Choose SAP Language". 38 posts. Repair guides and support for your LG TV. Tags . Blu-ray players. When the chip was not properly seated when first placed over time heat will cause them the separate. I have been reading up on this issue and it seems others are having the same problem. If you get a black or blank screen with no sound when you try to watch or launch Netflix, follow the steps for your device below to fix the problem. When i turn on my Lg lcd it makes sort of a loud click sound then has very dim black screen. Only while light on the bottom corner came on just like the other power supply. Make sure your power supply is working. Tv was working fine with great pict … read more Your problem seems to be on the backlight circuit. Perhaps either power fault from the PSU, or a blown led from led tapes, if your TV is a ledTV. This function is called different for the manufacturers, e.g. Total procedure time 10minutes. Power on the TV using the button on the TV control panel, do not use the remote control. Get more answers from the people in your networks. LG LJ4540 24LJ4540 24in. If you read the answer, the suggestion was to check the outputs of the power board. The heat sink goes off by pinching the feet of those plastic pins on the back with pliers. Also used a double layer of foil with the chip area cut out as heat Shield for other parts. Some troubleshooting steps for fixing the LG TVs might include fixing the TV screen or fixing a sound issue. On a daily basis there is a orange film collecting on parts of my dishwasher. (sound but no picture) I have noticed that when the TV is turned on it sometimes flashes a bit of picture on the screen but seems very weak and then goes black. Do not over heat past 220c and heat up and cool down slowly to avoid thermal shock. Post some images of your boards with your question by using this guide. It is Kenmore 665.17539202. Follow the simple quick fix and you should be enjoying your TV for many more years to come. It is pretty old but is in great shape and has worked well for so long, three or two years ago when I turned it on there was sound but just a black screen, I didn't do anything because I didn't have a warranty and I knew it would cost too much to get it fixed. @chianti19881, this procedure worked for me, too. Share it! Took the motherboard out of the TV. The power light is on. The power light is on. When I check the pins on the power supply I have 9 10 11 and 12 all showing 3.5v but all the rest show 0. Another had a short in the on-console button. Press and hold the 'Mute' button on your remote for 5 seconds to ensure your screen isn't muted. If you see anything moving on the screen where the light falls it means the backlight has failed. Some VIZIO TV's have a "Mute Screen" feature to turn off the screen if you are streaming an audio application (Pandora, Spotify, etc) and don't want the screen on. What can I do if I have no heat gun? Obviously a problem with this series of TV's. However, if the screen does have built in speakers you need to go Control Panel>Hardware and Sound>Manage Audio Devices and set either your headphone jack or the screen to be the default device. Myrna Chapman. My TV turn black with no sound or picture. I CAN CHANGE CHANNEL AND HEAR DIFFERENT AUDIO BUT NO PICTURE. Searspartsdirect.com is always a great resource to find the answers to your parts questions. Use the following guide to determine how to resolve a TV with sound but no picture. ... Return to the previous menu and try to play your TV show or movie again. It had no audio/video but the power LED came on, so I figured power supply is OK and I tried your procedure. I have checked both AV1 and AV2 inputs with a dvd connected and it is the same. I openness the back cover and it seems all capacitor are in working order. Roku. Xfinity For full functionality of this site it is necessary to enable JavaScript. Do I need to replace the BU board or power supply. chianti19881, Chianti, how did you remove the heat sink from the bga chip? I had the same trouble on a 42LX6500. It may also be an issue with bulging capacitors or a loose cable or ribbon connector. Perhaps already you have solved your problem but anyway take a look at this reflowing video: https://www.youtube.com/watch?v=hIKfvqrO... And about the brown heat sink ,most likely it is different on your tv model. Owners manual gives no info on how to ... LG washer wm2016cw overfilled and then will not drain. The outputs of the set temperature PSU, or possibly a faulty power supply '' ``... Turns on & off and cords are securely connected to the `` Settings '' screen sounds more a. 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