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Fuse location on vizio lcd m420nv - Vizio VO47L 47 in. LCD TV

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Posted on Jan 02, 2017

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SOURCE: LCD controller board location on Vizio L37

Display controller is usually under the Main board which you remove to get access to it. Display controller connects to the suis-boards which then send signal to the screen of the TV.

Posted on Mar 20, 2009

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SD Tech
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SOURCE: vizio m420nv without a remote

Contact Vizio for part number by model number or Google the model to locate an original (universals are a waste of time and money and often are missing key features needed).

Posted on Apr 01, 2012

gopakumarg43
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SOURCE: My vizio m420nv only orange light turns and does not do anything else. What might be the problem?

Do a hard reset to this set, and check. If it do not help you; its main board is faulty.
There are two types of reset to TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

Posted on Aug 11, 2015

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1 Answer

My Vizio m420nv tv the left half of the screen has a yellow tint throught the whole screen. the right hand side is fine. Ive changed the T Con Board and didn't change anything. any ideas?


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.
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.

Dec 01, 2015 | Vizio m420nv 42 in. LCD HDTV

1 Answer

What is the code to pair remote with comcast


You should be able to find the correct code on the Comcast website.

Just check out: http://customer.comcast.com/remotes/

Hope that helps!

Aug 07, 2013 | Vizio m420nv 42 in. LCD HDTV

1 Answer

Vizio M420nv LCD TV Black Screen


lightning can do extensive damage to electronics equipment especially flat panel TV's. I would really recommend a professional diagnosis instead of board swapping. You could have several boards that are damaged!

Feb 13, 2013 | Vizio m420nv 42 in. LCD HDTV

1 Answer

Vizio M420NV Wont turn on


I have a suggestion if you have and are using a box of some kind with this set, remove set and box from power for awhile and then power both back, sometimes a box can trigger this type of event, hope it helps and it cannot hurt to try.

Dec 11, 2012 | Vizio m420nv 42 in. LCD HDTV

2 Answers

Vizio m420nv has no sound or picture


High there!
I want to try this, change the video card ( video audio section ) of the TV

peace .

Apr 21, 2017 | Televison & Video

1 Answer

Vizio m420nv has sound but no picture


Hello there

Actually that problem is very common on all LCD TV,, that problem is cause of either inverter board or t-con..

In this case you don't need to check the voltage that is too complicated for you,,only visual check is enough..

I share you my tricks and hope it helps..

Power on your TV turn off your lights..if you will see the light comes from the screen the problem is t-con..if no light the problem is inverter board (backlight) board

Hope it helps..

Don't forget to rate..

Aug 25, 2012 | Vizio m420nv 42 in. LCD HDTV

1 Answer

Vizio m420nv without a remote


Contact Vizio for part number by model number or Google the model to locate an original (universals are a waste of time and money and often are missing key features needed).

Mar 31, 2012 | Vizio m420nv 42 in. LCD HDTV

1 Answer

I just purchased a brand new M420nv 42 HDTV LCD LED and turned it on for the first time & the screen was white with blue vertical lines (very similar to a UPC bar code) on the left side of the screen. ...


For sure a defect. You are looking at a T-con board that is faulty. Return immediately and get a different one. If it's within 30 days just swap out and avoid having to wait for a warranty repair!


Please rate if this helped :)

Mar 09, 2011 | Vizio m420nv 42 in. LCD HDTV

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