Question about Dell Latitude D800 Notebook

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Vertical black bar across the screen

This Latitude D800 has a vertical black 1.5" bar across the screen. The bar is visible at all times even in the BIOS scree. Any thoughts? is it the video card or the screen itself? can it be repair without replacing the screen?

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Sounds like the screen settings are out, try changing the screen settings, not sure which button it is though i rarely play around with laptops

Posted on May 19, 2009

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Vertical black bars screen


Try connecting an external monitor to the 15 VGA (video) plug on the laptop and see if it displays properly on the monitor. You may have to direct the video from the laptop to the monitor by holding down the blue <FN> (key next to the space bar) and then press down the <F8> key.
If the display on the external monitor is correct, then you either have a problem with the laptop's LED display screen or cable that connects the LED to system board. Here is a link for the service manual:
ftp://ftp.dell.com/Manuals/all-products/esuprt_laptop/esuprt_inspiron_laptop/inspiron-9300_service%20manual_en-us.pdf

Feb 16, 2013 | Dell Inspiron 9100 Notebook

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Appear vertical lines on screen


What is happening to your laptop is the power line connecting a row of pixels is failing so only partial colors are showing up causing the vertical lines. Usually screen replacement is the only answer to fix it. You can find replacement on most LCD displays on Ebay.

Dec 30, 2010 | Dell Latitude D800 Notebook

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Have a 29 inch 5 or 6 yr old rca color tv lately we get a colored horizontal bar across the top of the screen and the other day we have fuzzy black lines across the entire screen


Hello,


CAUTION: To prevent damage to the CRT phosphors, immediately turn down the brightness so the line is just barely visible. If the user controls do not have enough range, you will have to locate and adjust the master brightness or screen/G2 pots.

A single horizontal line means that you have lost vertical deflection. High voltage is most likely fine since there is something on the screen.

This could be due to:

Dirty service switch contacts. There is often a small switch located inside on the main board or perhaps accessible from the back. This is used during setup to set the color background levels. (On some sets, this is located on the CRT neck board and may be a jumper plug or other means of selecting service mode - not an actual switch.)

When moved to the 'service' position, it kills vertical deflection and video to the CRT. If the switch somehow changed position or got dirty or corroded contacts, you will have this symptom. Flip the switch back and forth a couple of times. If there is some change, then replace, clean, resolder, or even bypass it as appropriate.

Bad connection to deflection yoke or other parts in vertical output circuit. Bad connections are common in TVs and monitors. Check around the pins of large components like transformers, power transistors and resistors, or connectors for hairline cracks in the solder. Reseat internal connectors. Check particularly around the connector to the deflection yoke on the CRT.

Bad vertical deflection IC or transistor. You will probably need the service manual for this and the following. However, if the vertical deflection is done with an IC, the ECG Semiconductor Master Substitution guide may have its pinout which may be enough to test it with a scope.

Other bad parts in vertical deflection circuit though there are not that many parts that would kill the deflection entirely.

Loss of power to vertical deflection circuits. Check for blown fusable resistors/fuses and bad connections.

Loss of vertical oscillator or vertical drive signals.

The most likely possibilities are in the deflection output stage or bad connections to the yoke.

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do you have a cordless phone placed nearby?
i just had that problem, and realised it was because of the phone's frequency (scary!). i move the phone/base away from the tv, and it's fine now.

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OK... Left to Right is weird. I'd say one of two things.
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