Question about Sceptre NagaIII X30SV 30 in. HD-Ready LCD Television

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Screen is black except briefly blue upon power on or putting source on "VGA"

I cannot display the on screen menu in any source mode. I have two sources hooked up from my cable box and also a DVD player and nothing appears on screen, with two exceptions. When I cycle the source to "VGA" the screen is briefly blue, as in no signal. Secondly, a blue screen is briefly displayed a few moments after the system is powered on. Then the screen goes black again. Any ideas? TIA, Dave

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Re: Screen is black except briefly blue upon power on or...

The permanent solution seems pretty clear, remove the crappy solder completely and replace it on the inverter transformers

Posted on Sep 22, 2011

Re: Screen is black except briefly blue upon power on or...

Your backlights power inverter board is what causes this prob. It is a Darfon V144-001.

Posted on Jul 08, 2008

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I think my htmi port is faulty i have tried 2 different leads n in both ports i can see whats plugged in briefly but then the screen goes black n red briefly n goes blue n stays blue

It may be necessary to change the input selection via the TV's menu system from its current setting to HDMI.

A blue screen is often used to indicate 'no signal.'

Mar 14, 2015 | Flat Panel Televisions



Viewing the Self Check Diagnostic List
1. TV must be in standby mode. (Power off).
2. Press the following buttons on the Remote Commander within a second of each other:DISPLAY > Channel 5 > Volume - > TV POWER .
Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a "0".
NOTE: If the Service Menu display text is not completely visible, press the Menu HOME button on the Remote Commander to refresh the display.
3. To exit Self Check display, turn the power off. Press [Menu] Exit.
Clearing the Self Check Diagnostic List
1. In Service Mode, press the Channel 8 Channel 0 .

RESETTING TO FACTORY DEFAULTSUse the following instructions to restore the User Controls and
Channel Memory settings to the preset factory conditions.1. While holding down the UP ARROW on the Remote Commander, press the POWER button on the right side of the set.The set restarts and displays the initial setup screen. This may take several minutes.
White Balance adjustment
1. Allow approximately 30 minutes for the set to warm up before proceeding with the white balance adjustment.
2. Connect the signal source to the 3 terminals of the Component In input (Y/Pb/Pr).
3. Set the Picture Mode to "VIVID" in the user menu.
4. Select the Component In input.
5. Open the Factory Service Menu (see section 3-1.) and select "Service Alignments Menu".
6. Set "White Point Red", "White Point Green", "White Point Blue" and "Black Level Offset Red", "Black Level Offset
Green", "Black Level Offset Blue" to average values .
"Cool " White Balance Adjustment
1. Select "COOL" from Color Tone in Service Alignments Menu.
2. Input 70IRE full white pattern signal into Component In.
3. Adjust "White Point Red", "White Point Green", "White Point Blue" in Service Alignments Menu if needed.
4. Input 25IRE full white pattern signal into Component In.
5. Adjust "Black Level Offset Red", "Black Level Offset Green", "Black Level Offset Blue" in Service Alignments Menu if needed.
6. Repeat steps 2 to 5 to achieve desired White Balance.


on Jun 30, 2015 | Sony Bravia KDL-26L5000 26 in. LCD HDTV

1 Answer

Youtube on my vizio 470i tv is off centered

The TV can display images in four different modes: Wide, Zoom, Panoramic, and Normal. Each mode displays the picture differently. To change the screen aspect ratio:
1. Press the MENU button on the remote.
2. Use the Arrow buttons to highlight the Wide icon. Press OK.
3. Use the Arrow buttons to highlight your desired screen mode and press OK:
• Normal preserves the content's original aspect ratio. Since the 4:3 aspect ratio is not large enough to fill the TV's screen, black bars are added to the left and right of the display image.
• Wide stretches a 4:3 aspect ratio picture to the edges of the screen. Since the picture is being stretched, the display image may appear distorted. If the program is already formatted for widescreen viewing (1.85:1 or 2.35:1), then black bars will appear on the top and bottom of the display image.
• Zoom expands images with black bars to fit the screen.
• Panoramic expands the display image to fill the screen.
images may appear wider than intended.
If you are watching widescreen (1.85:1 or 2.35:1) content, black bars will still appear on the top and bottom of the display image. This option is only available when the TV is displaying a 480i/480p source.

Apr 25, 2014 | Vizio Flat Panel Televisions

1 Answer

LG 37LG30 wont come on. Gives blue light, but screen stays black and no sound

Sounds like the problem could be in the power supply of the TV. Have a technican check for defective capacitors if you're not equipped to do the job yourself.

Apr 22, 2013 | LG 37LG30 37 in. LCD HDTV

1 Answer

Screen is completely black except for about 4 inches on top......

Try a reset of the display device or hit the menu button to get a display on the screen- If you get a full picture that way then you have some setting set wrong. It could also be a PIP- picture in picture mode that you only have one source put into the TV rather than two.

Aug 10, 2012 | Vizio SV320XVT 32 in. TV

1 Answer

Changed VGA settings. When computed boots up I get a black screen. A small box displays the MSG - MODE NOT SUPPORTED. Is there a way to change the mode from the TV?

1. Let's power the computer off in order to boot it into "safe mode."

2. Restart your computer and start pressing the F8 key on your keyboard.

3. You will be presented with the Windows Advanced Options Menu that contains several options to choose from. In this case you will scroll down using the down arrow on your keyboard to the option, "Safe Mode" then press the "Enter" key on your keyboard.

4. The next screen should display "Please select the operating system to start:" typically the name of your version of windows will be displayed and highlighted in white, I recommend you just press "Enter" on your keyboard at this screen.

5. Now you will see a bunch of white writing scrolling about your screen and after a few moments you should be able to login to Windows.

6. You may receive a prompt asking if you really want to boot into Safe Mode. Choose Yes.

7. Once Windows is fully booted, you will be in safe mode.

8. Now right-click on the desktop

9. Choose "PROPERTIES"

10. The "DISPLAY PROPERTIES" menu will come up, then press on the "SETTINGS" tab

11. In this tab you will see a slider bar that can be slid from left: (Less) to right: (More). Slide the tab to the left toward the "Less" option. After positioning the slider to a lower screen resolution be sure to press "APPLY" then "OK" on the bottom of this menu

  • Usually a 1024×768 screen resolution will be sufficient for most monitors.

12. Now reboot your computer as you would normally and that lovely "VGA not supported" message should be long gone.

May 09, 2011 | Insignia NS-LCD19 19 in. LCD TV

2 Answers

JVC LCD TV LT-42X688-powers on, blank screen. no picture,no sound

You most definately have bad capacitors in the power supply. try and get it repaired as soon as possible, not an expensive repair that iv'e seen.

Feb 04, 2009 | JVC LT-32P679 32 in. LCD TV

2 Answers

Blue Screen in TV Mode

I have an Audiovox FPE1506DV with the same problem: it plays DVDs okay, but when I try to watch TV, it only shows a blue screen, but sometimes you can hear the sound. Cable input is fine.

When going through the Menu option in TV mode, the "Display" option is disabled; you cannot select it with the remote.

SOLUTION: I unplugged the device for about 5 minutes, plugged it back in, and it has been working fine ever since. It's a very strange problem, but rebooting by UNPLUGGING (not just powering down) seems to have fixed it.

Dec 09, 2008 | Audiovox FPE1506DV 15 in. LCD TV/DVD Combo

2 Answers

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I had this same issue a year ago and I have it again. I was told it is the light. The company sent me a new one I installed it easily. Worked fine I am not sure why mine died so fast

Sep 09, 2007 | Flat Panel Televisions

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