Intermittent horizontal lines bottom 3rd of screen fix
This is a 58” Vizio smart tv model V585-H1
I’ve had this tv for a few years and about 2 months ago I lost my picture entirely and deduced I had to replace the tcon board. I did this myself and it was a great success.
Just yesterday I’ve encountered a new problem: horizontal lines on the bottom of screen that come and go. 14 seconds of lines, 10 seconds of no lines. Repeats, with little variation. I timed it. Occasionally the lines cover about half the screen, but only briefly.
Coincidentally, my kid spilled some Koolaid behind the tv and the problem showed up a couple hours later. I’m reluctant to believe that this has anything to do with the tv problem because I don’t think any of the drink actually got into the tv. I’m not entirely sure though.
I’m tempted to just replace the tcon board again and see if that helps, but since it’s not the same problem as last time (and I just replaced it) I’m not sure if that will do the trick this time.
I would really like some insight as to what I should do to try to fix this issue myself. I’ve posted pictures of the with lines and without lines.
Changing the picture
Cleaning and reseating the ribbon cables
I’ve inspected all the boards carefully and see nothing that appears damaged.
smacking the tv
Hoping someone can point me in the right direction here