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  • Before we begin this tutorial, I would like to say that if you have a question about your

  • TV repair, please comment below the video and we will respond with advice and a link

  • to your replacement part. Be sure to include your TV Brand and model number, along with

  • the symptoms your TV is showing. You can typically find your TV model number on the back of your

  • TV.

  • You can also send us a YouTube message with your TV repair questions as well. Before you

  • begin your repair be sure to unplug your TV from any power source and properly ground

  • yourself.

  • We have already removed the back cover of our TV, but you will want to remove all the

  • screws connecting your back cover to your TV and then simply remove the back cover piece.

  • Over here we have the main board. The main board controls your TVs inputs and outputs,

  • this main board is connected to the backlight inverter/LED driver via this ribbon cable.

  • Right here we have the backlight inverter/LED driver. This is what supplys power to turn

  • on the backlighting for the TV. LED TVs are basically the same as LCD TVs with one real

  • exception, the source of illumination for the screen and the board that drives that

  • illumination. LED TVs use LED backlights as opposed to LCD TVs which use CCFLs, cold cathode

  • fluorescent lamps. The screen though on an LED TV and LCD TV are the same.

  • This TV has two power supply boards. Here we have the G7 power supply board, this provides

  • power to the backlight inverter/LED driver via this cable. The two power supply boards

  • are connected to each other right here. The other power supply is called the G6 power

  • supply. The G6 power supply connects to the main board and to a power saving switch located

  • on the outside of the TV. That goes to the switch, this connection here goes to the main

  • board.

  • Now we have already removed the cover for our T-con board right here, but this LED driver

  • also has a cover. Here is what the T-con board cover looked like originally before we unscrewed

  • it. So if you are doing any repairs to the backlight inverter/LED driver or the T-con

  • board, you will need to remove the covers for each of them, before you replace the board.

  • Removing the covers can be simply done by removing the screws that hold them to the

  • panel. The T-con board actually takes the image and sends it to the panel which makes

  • it show up on your screen. You can see the T-con board is connected to the LED driver/backlight

  • inverter here and then connects to the panel via these cables here.

  • One of the most common problems with an LED TV is that the TV will not turn on. If your

  • TV will not turn on and you have no power on your TV, that is most likely a problem

  • with the power supply.

  • Here are some common symptoms that LED TVs can show that could be a bad main board. If

  • your inputs are not working and you have no signal from the HDMI connection, the tuner

  • connection, the RCA connection or any of those connections etc. That could be a bad main

  • board. If your TV has no audio. If your TV set restarts on its own while powered on,

  • that could be a bad main board. The LED driver is similar to an LCD TVs backlight inverter,

  • so the most common problem here is that you wouldn't have lighting from the LED driver.

  • So your TV would turn on, you could have sound but you would have no image on the screen

  • and no backlights.

  • Once again, you could use a flashlight and run the flashlight test on your TV. We will

  • put up the link right now on the video for the flashlight test and you can learn how

  • to determine with a flashlight if your TV has back lighting or not. If you find out

  • that your TV does not have back lighting this would be the most common problem here, the

  • LED driver.

  • Some common problems with the T-con board, is that if you have no picture on your screen

  • but your TV does have backlights and sound, that could be the T-con. Earlier we said it

  • could be the main board, but the T-con could also be at fault if that is the symptom. You

  • could also have colored vertical lines on your screen or half of the screen is missing

  • the picture. Those would both be symptoms that could be a bad T-con board.

  • Thank you for watching our LED repair video, please remember that if you are having a problem

  • with your TV and you want to ask us a question about that problem, please be sure to comment

  • in the comment section below this video. We will respond with our thoughts on the symptom

  • and the diagnosis and be able to recommend a replacement part for your TV repair. Please

  • be sure to include the TV brand, the model number and any symptoms that your TV is showing.

  • This will allow us to better understand your problem and give you a better diagnosis.

  • Thank you for watching one of our many tutorials here at ShopJimmy.com. If you have any further

  • questions regarding your repair, simply post a question in the comment section below or

  • call our award winning customer service team at the number on your screen. We strive to

  • learn and share new TV repair tips everyday, subscribe to our YouTube channel and grow

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Before we begin this tutorial, I would like to say that if you have a question about your

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