tft lcd backlight no image made in china

Hi Everyone. I am in the same bucket. My TV just hit two years in September. TCL did not give two fux. I was very vocal about it on their FB page so they blocked me from commenting and deleted all negative posts. Luckily I have another (work) account so I was able to confirm their action. I actually reached out to classaction.org website and apparently they referred my email to a law firm. I have not heard back from anyone yet, but if anyone is up for a class action lawsuit, let"s do it. We may not get our money back but maybe it"ll prevent this trash of a company from selling the disposable tv"s and screwing the customers over. At least now I know that apart from 4k and, hdmi etc, a decent warranty should be on the list.

I have a 65 inch TCL roku TV! I am having the black screen issue! I have had this TV almost 2 years! Absolutely ridiculous! I have a Vizio that I have had for 6 years! Never any issues! Now I am reading all these posts from people with the same issues! SMH! Someone should be held responsible!

gotta second you on this, my 65inch just died yesterday, its like 28 months old (a little under 2.5 years) seems to be the backlight (flashlight check shows it fully functional with sound). I started to take it apart but there are 20 led strips in this bad boy. I"m at the point of either spending 100 dollars on new LEDs and taking it apart hoping I done mess up the massive screen and filters, or paying someone 200-300 bucks to do it :/ Sucks to add this cost to a $1100 investment >_>

There is this really weird fix for black screen I saw on a youtube video. It fixes problem for many, but not for me. It did make "Roku TV" flash very quickly. Does this mean LEDs not out? Fix consists of the following: Press the following sequence on the remote: Home button - 5 times; Up once; Rewind twice; Fast Forward twice. After you do this wait a minute or two. TV turns itself off, then on, the flashes like it is cycling through a test or something. Then it is supposed to turn itself off and on again. Mine did not turn off the second time, but it worked for many other commenters. video was on WorldOfTech channel, or something like that.

My 45" tcl TV worked for a short period of time then stopped. Did all the troubleshooting and seemed to fix it but eventually went back out...my year warranty was up literally 5 days ago they won"t do anything about it. We hardly ever even got the chance to use it now my daughter is out her only birthday present. ? this should be illegal. I"m in on a lawsuit!

Ever had your TV showing nothing but a black screen even if the audio was working? Unfortunately, that’s a common issue with low/middle-end LCD/LED TVs these days… Even more frustrating, this issue often comes from a rather tiny and cheap component that can be easily replaced. Most common issues are:

The first step into repair is to find the root cause of the issue. As backlight failure is a very common issue, this is the first thing to test. To do so, the easiest way is to power on your screen, put a flashlight very close to it and check if you can see the image through. The image would be very dark, like turning the brightness of the screen very very low.

That implies disassembling the TV to access the backlight which is between the LCD screen in the front and the boards in the rear. In my case, with a Samsung F5000, I had to process as follows:

First we have to remove the back housing to reveal the boards (from left to right: main board, T-CON, power supply) and disconnect the LCD panel from the T-CON board.

Note: Older TVs have neon tubes for backlight, which is thicker and less exposed to this kind of failure. LED backlight is the most common thing these days, but do not mistake an LED TV with an OLED TV. The first one is a classic LCD panel with a LED backlight, whereas the second is an OLED panel that doesn’t need any backlight as it is integrated in each pixels (making the spare parts much more expensive by the way).

As we can see, the backlight system is made of 5 LED strips. First thing to do is look for burnt LEDs. Most LED backlight systems have strips set in series, meaning that if one of the them fails, all the system goes dark…

Using a multimeter, we can confirm that the strips are indeed set in series, so now we have to test each strip individually. Professionals use LED testers such as this one (about 40$ on amazon) but as I didn’t had one at the time, I decided to make one, McGyver style!