Chosen Solution
Hello, I put an older tv in the garage, a 65" RCA smart TV Virtuoso which works fine in the summer days but when the temperature drops to like 65F or lower I get a lot of horizontal lines going up and down that I cannot see the image anymore. When the weather warms up it’s fine again. Could it be the t-con board???
@homie_2022 sorry but no. Horizontal lines are pretty much always caused by the LCD driver board (mounted pretty permanently to the LCD) or in a very few instances by the main board. You can try and spray some freeze spray on your mainboard and see if that makes the symptoms re-appear . if so you know its your mainboard. The only other thing I would check are the LVDS ribbon cables. Make sure that they are all properly seated and that the connector are properly soldered to the board i.e. main board and T-con board. Do a quick reflow of the connectors and see if that helps.
