https://www.youtube.com/watch?v=kallk3Kcbp0
Here we have a 70 inch Sony Bravia 4K LED Smart TV model KD-70X690E with no picture, no power, and no standby light on the bottom of the television. TV is to

https://www.sony.com/electronics/support/televisions-projectors-lcd-tvs/kd-70x690e/articles/00200862
Choose your issue. If the issue still occurs after resetting the TV or viewing the video, select the issue or symptom below for further troubleshooting: The TV has no power. TV turns off or randomly restarts. An LED keeps blinking on the TV. Slow or unresponsive remote. Missing channels & signal quality.

https://www.sony.com/electronics/support/televisions-projectors-lcd-tvs/kd-70x690e/faqs
KD-70X690E. X690E 4K HDR Smart TV with ClearAudio+ / Included components may vary by country or region of purchase: RMT-TX300U. BRAVIA TV troubleshooting guide Before you start Most issues can be resolved by following easy troubleshooting steps. First step: with the supplied remote control, perform a soft reset.

https://forums.tomsguide.com/threads/replaced-power-supply-in-sony-tv-but-it%E2%80%99s-still-not-working.448801/
Apr 6, 2019. Solution. #4. At the very least you would need a VOM (volt ohm meter) and the service manual which I could not find online with a quick search. A bad power supply could cause additional damage to other boards or could be damaged itself if one of the boards it powers has a problem. 0.

https://www.sony.com/electronics/support/televisions-projectors-lcd-tvs-android-/kd-65x75k/articles/00023331
If the TV still fails to turn on, continue troubleshooting. Unplug the TV power cord from the electrical outlet for at least 30 seconds, then plug it back in. Disconnect all external devices connected to the TV. Turn on the TV. If the issue still occurs after following the above instructions, repair may be required. Go to Product Repair.

https://www.avforums.com/threads/sony-kd-70x690e-no-display.2418128/
I have a Sony TV model KD-70X690E with no display (picture stay black). My concern is how to determine if the problem come from power supply or the backlit led strips ? I open the TV and confirm on the power supply board that the +5V and +12V are working properly. At the backlit led connector (on the power supply board), the voltage increase on

https://www.avforums.com/threads/no-display-power-supply-or-backlit-strips.2418127/
At the backlit led connector (on the power supply board), the voltage increase on power on from 0 to around 100V within 3 seconds and than decrease rapidly to stabilize at around 32Vdc (after about 5 seconds). According to the service manual, I'm suppose to have around 210 Vdc on that connector. Unfortunately, I don't have a TV led tester to

https://us.community.sony.com/s/question/0D54O00007tdB2ISAU/how-to-fix-a-sony-plasma-tv-with-a-standby-problem?language=en_US
Press the arrow or reset button and hold it down for 30 seconds to perform a reset and remove the standby mode setting. Another factory reset option is to press the power button on the TV. Hold the reset button on the TV while you press the power button again. The plasma TV will kick on a green light and turn on completely.

https://www.sony.co.nz/electronics/support/articles/00023331
Unplug the AC power cord (mains lead) from the wall outlet. Plug the AC power cord (mains lead) after leaving it unplugged for 2 minutes. Turn on the BRAVIA TV. NOTE: If the TV is plugged into a power strip or surge protector, unplug it from the power strip or surge protector and plug it directly into the wall outlet.

https://www.sony.co.uk/electronics/support/articles/00279639
Step 1: Do a test by using the power button on your TV. Your TV has an actual power button on the TV - usually on the back (right or left side) or at the bottom of the TV frame. TIP: If you can't find the power button, visit the following article: Power button location on BRAVIA TV models. Alternatively, check the start-up guide or reference

https://www.ifixit.com/Answers/View/311319/No+red+light+-+no+power+at+all.
1) Standby power - This is usually 5V and is there to respond to a remote. The presence of this is known by a red light that is seen from the front of the TV. If this is not present, a remote won't work and most likely the TV won't turn on at all. (This is what is being reported here.) 2) Running power - This is what is used once the set turns on.

https://www.ifixit.com/Answers/View/640283/TV+will+not+turn+on,+no+standby+light
Posted: Jun 12, 2020. Options. Hi, Just wondering if you have the correct chart as one of the voltages you quoted seemed wrong. Searching for a Samsung UN49MU6290FXZA power board, shows that the power board is a BN44-00807F. On the board it shows that the Standby voltage is 7.5V at the test point which should change to 11.8V when the TV is on.

https://www.sony.com/electronics/support/televisions-projectors-lcd-tvs/kd-60x690e/articles/00153674
Select the issue you are experiencing for help troubleshooting. The standby indicator blinks in red. The standby indicator turns off. No picture on your TV from a connected device. Models equipped with the Presence Sensor. If the issue continues after completing the troubleshooting steps, your TV may require repair. Go to Product Repair.

https://www.lapseoftheshutter.com/sony-tv-not-turning-on/
Hold down the physical power button on the TV for at least 15 seconds. The power button is usually beneath the Sony logo or on the side of the TV. Wait for at least 2 minutes for any residual power to drain from the TV's capacitors (which are capable of storing charge for several minutes).

https://www.youtube.com/watch?v=_xF4LZP-KXg
SONY TV Power Board Failure. TV Repairing Tools: 1. TV Backlight Tester: https://amzn.to/330BGs92. LVDS Panel Tester: https://amzn.to/3

https://www.technewstoday.com/fix-tv-wont-turn-on/
Most of the time, a soft reset will solve the problem without further exploration. To do a soft reset, unplug the power cable from the supply. Wait about a minute. Then, press the power button on the TV panel for about 30 seconds. It will help drain the residual power from the capacitors and solve the power glitch.

https://removeandreplace.com/2015/08/27/how-to-repair-a-flat-screen-tv-with-power-issues-which-part-to-replace/
Then open the TV case carefully and gently. Gain access to the inside of the TV so you can see all the boards inside. Look at the capacitors on the power board for any signs of buldging. If you see no buldging caps then you may need to just replace the complete power board which are not expensive. LCD LED TV Repair power boards.

https://removeandreplace.com/2016/11/01/tv-service-repair-manuals-schematics-and-diagrams/
I have Sony KDL55-EX723 LED HD TV which stop working after lightening. Fallowing your videos I have checked standby power 3.3V not present. Main Power Board (Sony G6, APS-299, 1-883-922-12) and Back Light Power Board ( Sony G-8, DPS-78, 1-883-933-11) some section of the power board has supply. High voltage going to G-8 present. No red light.

https://www.electronicsrepairmadeasy.com/2016/07/understanding-standby-circuit-in-led.html
When troubleshooting switch mode power supply (LCD/LED TV) it is very important to check the status of the standby voltage. If you open the LED/LCD television and disconnect both the main board and the inverter board if they are separate, you will notice that only one outlet will have a voltage and the rest will be zero. This voltage is usually