Question about Vizio Televison & Video
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Posted on Jan 02, 2017
SOURCE: vizio E420I-A0 Black Screen
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Vizio E470i A0 Blank Screen No Backlights How to Test Power Supply...
Testing TV Backlight LEDs
Testing tv backlight leds EsBuzz net
Posted on Mar 10, 2016
LCD panel of the tv is faulty.
If you wish to get some details; check the site linked here. Pull up older posts.
Posted on Apr 07, 2016
Sounds like back - light problem. 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.
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. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
Posted on Sep 11, 2016
Take it in for repair. Television repairing is not a DIY subject. The course is 2 years full time.
We see self diagnosis posts here all the time and generally it is I changed this board, that board and that board and it still doesn't work. You can't return any of these parts when you buy them. If you like to have a gamble, sure, go ahead and buy the parts. It SOUNDS like the correct diagnosis, the backlight is gone. How about blown capacitors, have you checked for that?
Posted on Nov 06, 2017
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