TV Repairs : LED Failure

In the past years, one of the frequent defects of the LED TVs that we repaired was the burning of one or more LEDs and, implicitly, the lack of image on the TV screen.

The defect can be easily detected even by the customer, manifesting itself through the lack of image and the presence of sound.

To eliminate another problem such as a defect in the display or the mainboard, turn on the TV, take a stronger flashlight that is projected onto the screen. If a dark image can be detected, then most likely the defect is caused by the burning of one or more LEDs inside the screen or, more rarely, a defect in the inverter that supplies them.

If the TV no longer has an image even with the flashlight pointed at it, then the defect is most likely caused by the t-con or mainboard.

Most customers say that they only had the TV for a few years and it broke, then compare these new TVs with the older generation ones (LCD, kinescope tube) and find that they are much weaker in terms of reliability. Unfortunately, this is true! Modern televisions come with a series of advantages such as: superior image quality (full HD, 4K, etc.), a minimalist design, low energy consumption, the possibility to connect it to the Internet (in the case of smart televisions), but they also come with some disadvantages such as: the sensitivity of the screens (they can break from a stronger press) and the lack of reliability.

The LEDs that equip modern TVs are undersized in number, this leads over time to a thermal packaging (overheating) that will cause short-circuiting or interruption. Likewise, television manufacturers do not try to compensate for this problem by implementing an appropriately sized cooling system but mount the bars directly on the metal sheet of the screen, which does not have very good cooling performance. In most cases, screws are used to connect the LED strips to the screen sheet, but there are also cases where they are glued. A pertinent example in this regard is the Philips LED TVs that use a tape to stick the LED bars to the metal mask. Unfortunately, this method is the most harmful because due to the heat, the LED strips tend to bend, and the glue gives way. This leads to the appearance of a gap between the bars and the metal radiator, preventing thermal transfer and leading to the burning of the LEDs.

The repair consists in disassembling the TV screen, removing the LED strips and replacing them entirely or the defective LEDs (depending on the brand of the TV). After performing this repair, it is recommended to use the TV at a lower brightness level to increase the lifespan of the LEDs.

Of course, this is a laborious and complex operation that should only be done by specialized personnel. Otherwise, you risk breaking the screen or breaking the paths connecting the screen and the t-con module, which is equivalent to the irreparable failure of the TV. For the repair of the TV, whether it is about replacing LEDs or another defect, do not hesitate to contact us. Our specialists will come to your home free of charge, find the defect (free of charge) and then offer you the optimal solution for repairing the TV.

We offer TV repairs for all areas within West Midlands and Staffordshire, with free quotes, pick up and delivery including:

TV Repairs Sheldon

TV Repairs Acocks Green

TV repairs Yardley