Question about Vizio M3D460SR 46 Class Edge Lit Razor LED 3D HDTV - 1080p, 240Hz, 500

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Visio TV M3d460SR lost all color. Wh wrong? Has great B/W Picture.

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Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset 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; visit the site linked here. ..

Posted on Jan 01, 2017

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I have a Visio TV MN:M3D460SR that has lost its color. It has great B/W Picture. What's wrong?


Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset 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; visit the site linked here.

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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/

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1 Answer

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The basic colors in the TV is RGB & each color has a diff amplitude & frequenc. It seems that the IC controlling the RED & BLUE has lost some of it's capabilities due to lower voltage supplied/regulated by the chip, which generally happens after quite long period of usage. However this seems an inherent fault with visio & most of the early sets do not have this problem sorted out at the manufacturing level & is a problem for most of TV's which are unpredictable & could occur in a month or year. If still under warranty, pressurize your dealer/distributor/service center to sort it pronto or ........... face the consequence..........sodeep

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