Chosen Solution
Hi, I’m wondering if anyone can help. We have an LG 55UH850V. The tv has a problem where the screen goes black and the sounds stays on, when looking at with a torch you can see an image. I have replaced the edge lit backlight and changed the power board but still have the same issue. Can anyone point me in the direction of what to try next? Could it be I’ve installed a faulty backlight? The metal strip at the bottom of the tv (where the backlight is) seems to get really hot. Should a backlight be hot? Could the main board also cause this issue? Thanks in advance for any replies. === ===
is the back light inverter a seperat board or built into the power board? is it LED right? i dont think LED should be hot. is there a seperat lodgic board down there that might be pumping the heat out?
Hi @lewyb With some LG TVs there is an inverter board associated with the LCD panel i.e. part of the panel but I don’t know about your model. Here’s a link to the service manual for your TV (I think). The translation seems to indicate that it is. It is a .rar type file and I haven’t downloaded it to check but maybe scan it for viruses first before opening it, just to be sure. Usually LG service manuals have good troubleshooting flowcharts and some schematics to help find problems such as no video etc. Hopefully this is of some help.
