Now that LCD panel is removed, we can remove the bezel that maintain the backlight diffuser and access the backlight itself. Be very careful with the panel as it is extremely fragile! Remove the front housing then the LCD panel Turn the TV around to remove the front housing and the LCD panel. Detach the 2 ribbons on the bottom of the screen from the board In my case, with a Samsung F5000, I had to process as follows: Disassemblyįirst 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. That implies disassembling the TV to access the backlight which is between the LCD screen in the front and the boards in the rear. Now that we now the image itself is fine, this means the main board is probably fine too, so we are going to test the backlight system itself. The image would be very dark, like turning the brightness of the screen very very low.
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. As backlight failure is a very common issue, this is the first thing to test. The first step into repair is to find the root cause of the issue. As the repair costs for that kind of TV is pretty low, considering repairing it yourself might be a good idea! Diagnosis This problem on low-end TVs often occurs within the first couple years. One of my relatives had this exact symptom happening all of a sudden. In this post, we’ll take a look at the latter and at one way to fix it. Defective capacitor on the power supply board.
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.
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