Posted May 27, 2023 So I have this LG TV (model: 47LN5790-UI) that I have replaced the LED back light panel this would be the third time. When I turn it on it flashes and then turns black. Sometimes I get the LG logo and I can see the image with a flashlight but sometimes is just black. I opened it again to see if I was missing something but dont know anything about TVs to know if there’s a problem. I did test the LED lights and the ones labeled as R1 and R2 (three of each) dont turn on unless I test the individual lights but all the ones labeled as L1 and L2 work. I uploaded some pictures of the back and boards. I also noticed the cable that goes from the board to the lights the table looks burnt Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted May 28, 2023 Would suspect the power supply board, that's usually what goes first in TVs/monitors. F@H Desktop: i9-13900K, ASUS Z790-E, 64GB DDR5-6000 CL36, RTX3080, 2TB MP600 Pro XT, 2TB SX8200Pro, 2x16TB Ironwolf RAID0, Corsair HX1200, Antec Vortex 360 AIO, Thermaltake Versa H25 TG, Samsung 4K curved 49" TV, 23" secondary, Mountain Everest Max Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB SX8200Pro RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case Asus Zenbook UM325UA, Ryzen 7 5700u, 16GB, 1TB, OLED GPD Win 2 Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted May 28, 2023 Its 10 years old. It will be cheaper to buy a new one. Gaming Room Office PC Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted May 29, 2023 Author On 5/28/2023 at 2:49 AM, Kilrah said: Would suspect the power supply board, that's usually what goes first in TVs/monitors. Would you happen to know the name of the cable that goes from the supply board to the LED panel? Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted May 29, 2023 Author 15 hours ago, dilpickle said: Its 10 years old. It will be cheaper to buy a new one. So I already bought a new tv I just wanted to see if I could fix this one instead of throwing it away Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
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