Mike W

Hello there! If after trying what Henry suggested to do, the HDMI inputs are still not working on your TV, then you need to replace your Main Digital Board. If your Tv model code is 55UF6450-UA.AUSYLJR, then the part number for the main board you need to replace is EBT64048902 Good Luck! Mike W

Based on the description of your TV issue, I suggest replacing the EEPROM on the main board. When this IC reaches a high temperature its very likely to cause strange behaviors. Also, the EEPROM is cost effective and it only requires of an average soldering skills. Good luck with your Tv RepairJourney Mike W

Fred, You are right, you do need a new Wifi Card and probably a new Main board too. I suggest trying with WiFi card first. It's easier and more cost effective. You can find Samsung cheap Tv parts at SilverShopTv. They are reliable, offer great price and fast shipping. Good luck with this journey! Mike W http://silvershoptvparts.com

Oldturkey is certainly right. LG Tvs are known for having issues with their HDMI inputs. If after performing a hard reset on the TV and replacing the HDMI cables, you still have this issue, I suggest to replace your LG Tv Main Board In order to order the right part, please get your TV model code from the back of your TV. It will help you to receive the right part. -Mike W http://silvershoptvparts.com

Jessica, LG Tvs are known for having issues with their HDMI inputs. If after performing a hard reset on the TV and replacing the HDMI cables, you still have this issue, I suggest to replace your LG TV Main Board In order to order the right part, please get your TV model code from the back of your TV. It will help you to receive the right part. -Mike W

Angel,

If your Tv shows fine when connecting one of the LVDS cables but stop showing picture once you connect the other LVDS, then you have a defective TV panel or screen.

Mike W

http://silvershoptvparts.com