Hi guys; any body knows how to lower backlight in Vizio M421VT LED,it doesn't let me go to the backlight adjustment i have to use movie that comes with backlight 55 but is a cloudy pic, to get a good pic have lower brightness to 30,raise contrast to 70. raise colour to 80,but when rebooting tv it goes to factory settings, which is vivid 100 backlight,tv has custom settings but it has the backlight adjustment frozen.all other factory have besides movie that is 55 all other have minimum 85 setting.
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Vizio M421VT LED backlight settings?
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Re: Vizio M421VT LED backlight settings?
Originally posted by ivtec View PostHi guys i just solved my backlight adjustment by turning off Ambient light sensor, and Smart Dimming.
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Re: Vizio M421VT LED backlight settings?
I do not know about the VIZIO, but when I replaced the LEDs in Insignia TV and then set the Pictures setting to custom to lower the backlights level but when I turn the TV off and then turn it back on, it goes back the VIVID mode, it turns out after digging into each user menu setup pages then I found the setting in the power control page that allow the TV to go to VIVID mode every time the TV is turned ON, so I unchecked the box then it remember my custom setting (it was not mention in the user manual, I also thought it was firmware problem). You may have to look at all the setup pages to see if it has such thing in VIZIO. I look at your TV user manual and did not see anything like that but they may not have put in that info..Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Vizio M421VT LED backlight settings?
Originally posted by budm View PostI do not know about the VIZIO, but when I replaced the LEDs in Insignia TV and then set the Pictures setting to custom to lower the backlights level but when I turn the TV off and then turn it back on, it goes back the VIVID mode, it turns out after digging into each user menu setup pages then I found the setting in the power control page that allow the TV to go to VIVID mode every time the TV is turned ON, so I unchecked the box then it remember my custom setting (it was not mention in the user manual, I also thought it was firmware problem). You may have to look at all the setup pages to see if it has such thing in VIZIO. I look at your TV user manual and did not see anything like that but they may not have put in that info..
TV is set to Store Mode (aka Shop Mode, Demo Mode) instead of Home Mode. In this case it will always revert to the vivid settings you see in showrooms. This feature usually appears in the Initial Setup Menu.
Go to the Help Menu and select the Guided Setup feature which will take you to the First-time Installation. When the Home/Store option appears, select Home. This allows you to later set and store your own custom settings.
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Re: Vizio M421VT LED backlight settings?
Originally posted by budm View PostI do not know about the VIZIO, but when I replaced the LEDs in Insignia TV and then set the Pictures setting to custom to lower the backlights level but when I turn the TV off and then turn it back on, it goes back the VIVID mode, it turns out after digging into each user menu setup pages then I found the setting in the power control page that allow the TV to go to VIVID mode every time the TV is turned ON, so I unchecked the box then it remember my custom setting (it was not mention in the user manual, I also thought it was firmware problem). You may have to look at all the setup pages to see if it has such thing in VIZIO. I look at your TV user manual and did not see anything like that but they may not have put in that info..
instructions using home mode instead of Store mode, and went through the install process,then turned off tv and turned it on all was good. but next day everything went to default ,what a bummer,maybe e prom faulty?
Also went through the menu pages and do not see anything related to that.
I guess i have to use Back light forcefully at 85 that's the minimum best default pic settings,which is Game, Football, which is a nice pic anyway, it also has back light at 50 with cinema setting but it's too blur due too low contrast and color, forget about the back light leds extended life.Last edited by ivtec; 10-17-2016, 02:03 AM.
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Re: Vizio M421VT LED backlight settings?
HI guys; update on my Vizio M421vt custom pic adjustments issue. Well today after doing again the factory default and complete installation of home settings and configurations, i went in the pic adjustments and adjusted custom pic settings to my liking and instead of turning off TV with remote control,(which is not the original for this model) i turned off TV on the TV control panel and a few hours later i turned TV on with remote and my custom settings were all there,already tried two times and all good,don't if powering off tv on the tv control have anything to do with it,yet to be seen,maybe i have to turn off tv on the tv,keep my fingers crossed.
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