First: Do this at your own risk. There is high voltage involved in this and you should know what you are doing before attempting this.This was done on a 2017

Black screen, with slow flashing white LED. I have this exact issue, I have replaced all boards, Main video, power board, and T-conn, but i'm now stuck where this question left off. Black screen, with slow flashing white LED. My tv is the XBR65x850C, but having the exact same issue. Tried to update via USB with latest firmware from sony website,

FIX NETFLIX 76.3K subscribers Subscribe 1.3K views 1 year ago UNITED STATES Today I will show you LED TV backlight Repairing Secret Tips. Here is the basic information for the troubleshooting

First make sure that the power board supplies proper voltages to the main board. Then check the LED connector and see what the voltages are on it. If you have no power to the LED connectors it is your main board not enabling the backlight. If you have power to the LED connector but no backlight, it’s your Backlight LED arrays.
However, you can still hear background sound if the TV is on. Backlight Problems. An LCD TV uses a backlight to light up the images displayed on the screen. If the backlight experiences any technical glitches, the screen won’t illuminate, and it will turn black. TV users might repair the faulty backlight strips to eliminate this hardware problem.

How to Diagnose + Fix Backlight Issues With Vizio TVs. 1. Vizio TV Black On The Top or Side. 2. Check for Power Board Failure. 3. Dark Areas of Your Screen is an Inverter or Backlight Issue. 4. Failures at the Individual LED Level.

Backlight out on your TV? Before replacing LED's check your driver board!Vizio 65 inch LED TV: M65-D0LED Driver Board Part Number: 3665-0032-0111(2B)https://
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Plug in the TV: Reconnect the power cord to the power outlet and wait for a few seconds. Make sure it is securely plugged in. Turn on the TV: Press the power button on your TV or remote control to turn on the TV. Allow it to boot up completely before assessing if the screen issue persists. .
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    • led tv backlight problem solution