Question about Vizio VO420E 42 in. LCD TV

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Vizio VO420e black screen

Turns on then goes to a black screen

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 155 Answers

SOURCE: Vizio 42", have picture for about 5 mins then screen goes black.

also check the power cord wire coming from the back of the tv is loose from the tv side or perfect.

Posted on Oct 26, 2008

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jyackle5
  • 8197 Answers

SOURCE: I am considering the purchase

Yes it does suport the hdcp. you can see the specs here on link below.

http://www.dealtime.com/xPF-Vizio-VO420E

Posted on Nov 22, 2009

budmrtn
  • 11361 Answers

SOURCE: I have a Vizio VX32L and when I turn it on the screen flashes and

There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=Vizio+VX32L+
Please post back what you find.

Posted on Dec 16, 2009

Testimonial: "Thank you. I was checking them out."

  • 19 Answers

SOURCE: Vizio VO420E 42 in. LCD TV

the problem its the main board of the tv not the power supply board.the main one controls all your imputs tv av component etc the cheapest place to find it its at www.shopjimmy.com cheaper than the manufacturer and those dudes that you find online that charge an arm and a leg just to come and just repair your old main board mine as well buy a new one at this site for less ok and you are welcome

Posted on Apr 13, 2010

budmrtn
  • 11361 Answers

SOURCE: Vizio VO420E " TURN ON, tv is showing no picture

It can be the main board, power supply, backlight inverter, etc.
You need to do some troubleshooting to narrow down the probelm, so please read my guide first.
First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c rating such as PANASONIC FM or FC series.
Please post back what you find.

Posted on Nov 25, 2010

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1 Answer

My TV turns on with only half the screen working, the other half is pitch black. It remains this way for about an hour and then works normally, except for a little flickering towards the edges. What is...


Hi Igor,
This is happening due to the lose or bad contacts in the LCD panel. Fixing this kind of troubles is a highly risky and delicate job. If you are not a practising technician, please let some good Technician do it.
Good luck.

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I HAVE A VIZIO VO420E ....TV POWERS 0N AND DISPLAY VIDEO AND AUDIO BUT AFTER PLAYING A FEW HOURS THE SCREEN GO BLACK BUT THE AUDIO is still playing


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/

Sep 18, 2014 | Vizio VO Televison & Video

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I have a vizio 42 inch model VO420E serial# LUKECAK1409419. when i turn it on i get a black screen but i have audio. it does this in every input. what can i do to fix this problem?


Most likely you have a backlight problem. To verify this, dim the lights in the room. Take a bright flashlight, turn on the set, and shine it on the screen. If you see a faint picture, you have a backlight fault. Your backlight inverter may be built into your power supply board. If this is the case, you will have to replace the inverter/power supply board

Sep 01, 2013 | Vizio Televison & Video

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Blue screen then goes black but still has audion HELP !!!


when it goes dark can you pull up tv menu if not or ch number take a flash light and press menu on side of tv or remote and shine light on the screen, look really close and if can see any images such as letters or number then very possible have a defective lcd panel

Jan 17, 2011 | Vizio VO420E 42 in. LCD TV

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Vizio VO420E 42 in. LCD TV -- Less than 3 months old. Picture slowly darkens and then goes out all the way. Sound stays on. Picture goes out. We turn the TV & cable box off, wait 30 seconds, turn...


the problem its the main board of the tv not the power supply board.the main one controls all your imputs tv av component etc the cheapest place to find it its at www.shopjimmy.com cheaper than the manufacturer and those dudes that you find online that charge an arm and a leg just to come and just repair your old main board mine as well buy a new one at this site for less ok and you are welcome

Apr 13, 2010 | Vizio VO420E 42 in. LCD TV

2 Answers

Vizio VO420E- Picture gets darker then screen goes blank


I have the same issue, its caused by the program powersaver when running an HDMI port. if you turn on the TV and your HDMI device close to the same time the info transfered between them tells the TV that the HDMI device is in sleep mode so the tv starts dark then fades black to save power. easy fix, turn on either the tv or HDMI device and wait till it is fully on before tunring on the other.

Jan 29, 2010 | Televison & Video

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