Vizio Televison & Video - Page 6 - Recent Questions, Troubleshooting & Support
How do I diagnose which board I need for 4k TV that powers on but the screen is black?
With the TV turned on, press the menu button and shine a bright flashlight on the screen at a shallow angle (about 20° from parallel to the screen). Move it around - if you can see the menu or other material where the flashlight is pointing, you have a backlight failure. This may be either in the power supply, or the backlight itself (sadly, with LED backlights, it's usually a blown LED).
How do I know what board is causing vertical lines?
It's actually the panel that's bad, not the board, one of your clock lines are shorted but it can be fixed with a piece of scotch tape by masking off the correct clock line, there should be 8 of them and it will give a decent picture just using 7, there are some youtube vids that describe how to find the pin to block if you want to dig into it.
D65u-d2 black screen diagnosis
Hi,
I would have attempted a system software update first once the screen went black. I would also disconnect all accessories. Then, if still failing, I would schedule a repair with a tv repair shop because it's dangerous to deal with internal portions of the tv as a consumer.
Thank you.
How can I fix my Vizio Tv?
Hell0, have you tried using a different HDMI input and HDMI cable? If you do and still have the same issue, it may be the eeprom on the main board going bad. Try doing a software update, some updates rewrite the eeprom and it may take care of this issue, otherwise the main board will need to be replaced. Thanks Techman 57
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