Dec 12, 2023 · During an update ,sometimes there's not enough power provided to the device when connected to the tv through USB , therefore it crashes during update . This will probably brick your device , which causes the device to get stuck at the start up logo.

Jun 19, 2017 · look under your tv and between HDMI AND USB buttons is a tiny hole,get a toothpick or something and off tv push in the hole ,hold it down,on tv and keep in pushed in until tv logo comes on ,keep holding for about 60 seconds on tv should reboot,keep trying,it will reset

Feb 22, 2020 · Hello, I have Model 55S405 TCL Roku TV. When I turn it on it flashes roku tcl logo for a fraction of sec and then screen blacks out. I unplugged tv for 15 mins and overnight , I tried to reset it by pushing reset button and I tried reset from roku remote using “home button 4 times, up arrow 1... - TCL Television

Feb 27, 2020 · The TV will reboot multiple times, but nothing changes. This has happened a few times since I got the TV, but always managed to snap out of it relatively quickly until now. Been at this several weeks now. On my 3rd replacement Main Board. First one showed the Vizio logo, then went black, but unlike the original, the backlight turned off.

Feb 11, 2020 · The TV doesn’t stay on long enough for you to verify what firmware version is installed by navigating through the Menus but the update procedure only requires that the firmware is loaded onto a USB stick and the stick inserted into the TV and then with the TV’s Power button being held operated the TV is powered on, the rest is automatic.

Aug 19, 2019 · Check the DC voltages on of each pin on CNM802. Compare the voltages against the print on the power boards. you need to check with the TV off and then again with the TV on. Let us know what you get on each pin. Also check pin 20 and let us know if it shows a steady voltage of ~4.11 or if it fluctuates the same way your backlight turns off and ...

Jul 20, 2023 · Philips 75PFL5603/F7 flashes logo on screen then completely shuts off. Voltages on power board are correct when plugged in. The only sign of life on the main board is the red light in the digital audio optical port. The red light stays on for about 5 seconds when pressing the power button, but eventually turns off.

Hi, I have a Philips 40pft5300, this morning when I turned it on it gave me a flash of the philips logo and then turned black, I can see the shapes on the screen with a flashlight and sound goes trough fine. But no light! All of the led’s works fine, had it opened to see. I am kind of lost right... - Philips Television

Apr 27, 2018 · A few days ago my TV screen suddenly went black and I don't quite know what to do. Basically, if I turn it on the LG logo will appear for about a second or so and then the screen goes black. although backlight stays on. The only button on the remote that does anything is …

Apr 23, 2018 · I have tried two power cables (borrowed from another working Apple TV), two HDMI cables (not perceived to be an issue since we can see the boot logo on screen), different power outlets, and even different televisions. There are articles on holding the TV and Menu buttons on the remote for 10 seconds to force it to restart.