Chosen Solution
Hi there, Recently found a “great deal” on FB Marketplace for a 55" 4k Vizio smart TV (model D55-F2). Was only $60 USD. It came with no remote and no stand which I thought was the reason for the bargain, perfect TV for the kids playroom. Turns out there’s a backlight issue that didn’t really show in the photos on the listing. Not gonna let the bad guys win though so I’m determined to fix it. I did a bit of research and found someone saying the problem could be a LED driver board rather than a bad led strip itself. My instincts/common sense tells me it a bad strip. Can anyone confirm from the picture attached? Looks like these Vizios are pretty easy to teardown. Would one strip be enough or should the whole array be replaced? Thanks in advance.
@bobmorales you would not want to replace a single strip anyway. Get the complete array and replace all of them. Something like this should work for you. The D55-F2 doesn’t use a separate LED driver board. The backlight is driven of the power board.
LED backlights are setup differently on TVs. Some are single strips, some dual. Some are controlled, some not. The first thing to check it the drive voltage for the LEDs. It is normally a separate supply from the power board. Then work your way to the LED strip(s).
