LCD DISPLAY DURING PLAYBACK

In both case, the problem is a defective display LCD panel.

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/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

Hi,

It is unfortunate that the LCD screen has vertical bars on it. Please send me a picture of the LCD screen via email to [email protected]. You may also try performing an LCD BIST using the below link:
http://dell.to/1irqbYp
Also try connecting a known good external monitor and check if that helps.

Thanks and Regards.
Kiran Kumar.
#iworkfordell.

Check the LVDS cable. {LVDS (Low Voltage Differential Signaling)that involves transferring a signal on a wire and its opposite over a second wire to allow the receiver to reconstruct the signal by difference.} The cable that connects to display panel to its T'Con board. Replace it if necessary. If you wish to get some details, check the site linked here. Surf the site in "MOSAIC" view. It will make surf easy. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Here is a hardware test you can run to test the video and lcd screen. That came with your laptop

Diagnostics before windows using the F12 Diagnostics
* Reboot and press F12 to enter the Boot Menu
* When the boot device list appears, highlight Diagnostics and press Enter
* The computer begins to run the Pre-boot System Assessment, a series of embedded diagnostics that perform initial testing on your system board, keyboard, hard drive, and display
* If the Pre-boot System Assessment completes successfully, you receive the message Booting Dell Diagnostic Utility Partition
* Press any key to continue
* Press any key to start the Dell Diagnostics from the Diagnostics utility partition on your hard drive
* After the Dell Diagnostics loads and the Main Menu screen appears, click the button for the option you want to run -
Express Test = Performs a quick test of devices. The test typically takes 10 to 20 minutes and requires no interaction on your part
Extended Test = Performs a thorough check of devices. The test typically takes 1 hour or more and requires you to answer questions periodically
Custom Test = Tests a specific device. You can customize the tests to be run
Symptom Tree = Allows you to select tests based on a symptom of the problem you are experiencing
* When you have finished running a test, close the screen to return to the Main Menu screen. To exit the Dell Diagnostics and reboot the computer, close the Main Menu screen


during the test it will BEEP ! it is asking you if colored bars are displayed. if the bars look ok then your screen is fine but if during anytime of this test and you see the distortion you described then its the LCD screen or LCD cable

hope that helps

I do not know any setting that makes a vertical line red-yellow-green from (top to bottom)

If you can find a monitor to connect to and know how to tell the PC to send a signal to it (ie, on a Dell it is Function F8) you can determine if it is your Video card or your screen that has failed. The Video card is part of the Motherboard and very challenging to replace. The LCD screen however is not as expensive and relitively easy to replace. You can watch YouTube videos on how to. A screen can be found at sites like Amazon and EBay.

http://www.amazon.com/Compaq-Presario-CQ70-120US-SUBSTITUTE-REPLACEMENT/dp/B005788D22

http://www.ebay.com/itm/NEW-COMPAQ-PRESARIO-CQ70-120US-LAPTOP-LCD-SCREEN-17-/200514204266

my colour is green why?

may be silly, but check on left of cam there are three switches. middle one says output. is it on cam or bars? Hope it helps

OPEN THE TV AND BLOW IT OUT ..THOSE BARS ARE THE EFFECT OF DUST INSIDE THE UNIT CLEAN OUT AS WELL AS YOU CAN AND THAT SHOULD FIX
YOUR PROBLEM

I’m happy to help further over the phone at https://www.6ya.com/expert/jovani_c02b023fe087f6cd

Recording a movie of a subject that is brightly lit by the sun or some other very bright light source can cause vertical lines or bars to appear in the image during playback. This is due to a CCD phenomenon called "smearing." Note that lines or bars appear in movie images only, but not in snapshots. Smearing does not indicate malfunction of the camera.