I have replaced the LED Driver board. When the TV turns on it flashes the Vizio logo, including back light for a brief second, then nothing can be seen until all the lights are turned off and a flashlight is applied to the screen. So the screen is working, but still there is no backlight, even after replacing the LED driver board. There was absolutely no change by installing the new part. How do I fix this?? TV is barely over a year old. As a PC repairman my instinct is telling me that it could be a problem with the power supply or the LED's themselves, but don't want to waste (more) money on parts that won't fix the problem. Thank you
Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.
What do you mean as card basis???
I already replaced the back-light inverter board
×
SOURCE: 47' (sic) LED TV, model number m470vse. Why doesn't the backlight work?
Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should trouble shoot. Contact any service technician. The circuit will differ with models and versions.
668 views
Usually answered in minutes!
Did you ever solve this I'm having the same problem and i already replaced the LCD inverter and nothing changed as well.
×