Question about HP Pavilion dv4000 Notebook

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Pavilion dv4 display horizontal flashing lines across the lower screen in taskbar area

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  • 153 Answers

I'm Sorry to say but it could be that you need a new screen (easy repair around $195) unless you go to HP
Or it could be the built in video card (much harder to repair)
Do the lines appear from start up or slowly get worse as the comp gets hotter, if this is the case it is more likely the video card then I would contact HP to get a quote, But first,
Try plugging your laptop into an external monitor & see if the lines show up then

Posted on Nov 26, 2013

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Posted on Jan 02, 2017

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SOURCE: pinky red tinge horizontal lines near the taskbar

sounds like your power inverter is going bad. replace power inverter and see how that works. Other issue if not solved is probably lcd screen. Inverter's can be found cheaper used if you use the serial number on your old inverter for searching, seeing as how inverters are often used on many different of machines. FYI.

Posted on Mar 13, 2010

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durtopian
  • 408 Answers

SOURCE: how can i remove the green/red horizontal lines

Replace the screen.

Posted on Jul 06, 2010

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1 Answer

Horizontal lines in Samsung led tv screen


If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

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Pavilion DV4 screen wont turn on.(Overnight problem)


Since you have graphics on an external monitor, the problem is the Video Cable, or inside the Display Assembly.

http://h10025.www1.hp.com/ewfrf/wc/product?product=3860431&lc=en&cc=us&dlc=en&lang=en&cc=us

This is a general example of a Video Cable, (Display Cable - HP), for an HP Pavilion DV4 series of Notebook PC,

http://www.ebay.com/itm/NEW-ORIGINAL-HP-PAVILION-DV4-LAPTOP-LCD-VIDEO-CABLE-DC02000IO00-486878-001-14-1-/281038275215?pt=US_Laptop_Screens_LCD_Panels&hash=item416f2fc28f

Mouse over to enlarge

The Video Cable connects to the motherboard in an area under the Keyboard, (About where the Fn key is), routes up along the motherboard, then routes up through the left Hinge, and into the Display Assembly.

From there it connects to the screen Inverter (Display Inverter -HP), and back of LCD screen.
It also connects to the LED backlight.

Either connections are loose, or the Video Cable (Display Cable) is damaged.
If the sheath of the cable shows apparent visual damage, so may be the tiny wires inside. (Stretched/Broken)

Connections CANNOT just be visually determined if they are loose.
You MUST physically check EACH connection.

Tightening connections does no good?
Perform a continuity test with a multimeter set to OHM's, on every wire in that Video Cable.

Have an assistant gently wiggle the cable in the middle, and check for an intermittent reading on the multimeter. Indicates broken wire if intermittent reading shows.

OR,

Take Video Cable to the nearest small computer store, and have the resident tech check it for continuity. Should just be a couple of bucks.

Use an ESD wrist strap, and connect it's alligator clip to a good ground source. (Electro Static Discharge)
Average cost is around $3 to $6.

Here is the download page for the free Service Manual, from HP Support,

http://h10025.www1.hp.com/ewfrf/wc/manualCategory?cc=us&dlc=en&lang=en&lc=en&product=3860431&

Scroll down, click on -
HP Pavilion dv4 Entertainment PC - Maintenance and Service Guide

Page 92 (PDF page at Top) for motherboard side of Video Cable (Display Cable - HP)

Page 80 for LCD screen, and Screen Inverter (Display Inverter - HP), and LED backlight.

Page 82 has false statements.

Remove the display assembly:

1. Locate the wireless antenna cable (1), and remove from path (2)

Should be;
Locate the DISPLAY CABLE (1), and remove from path (2)

2. Disconnect the wireless antenna cable from the system board (3)

Should be;
2. Disconnect the DISPLAY CABLE from the system board (3)

Somebody was on crack that day.

The wireless antenna cable information that follows, is correct.

Video Cable (Display Cable) is on the Left side.
Wireless Antenna wires are on the Right side.

For additional questions please post in a Comment.
Regards,
joecoolvette

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1 Answer

On my HP Pavillion laptop I have a static line and ghost URL across the bottom of my screen


Reinstall browser. Is that only in browser or everywhere ? Consider reinstalling Windows again

Jan 03, 2013 | HP Pavilion dv4-1430us Notebook

1 Answer

Display flashes horizontal lines


It's not unusual for a monitor to use different circuit paths based on the the display resolution chosen and so, one could have a resolution that is faulty, while another works just fine. Monitors normally just get dim, or power supplies fail, or other more common failures, blank or white dots... etc.; but, should a monitor live long enough without failing in those areas, usually one or more resolutions will fail. Doesn't leave you much of an option, other than a repair shop, if one could be found; but, as long as it works at that or another resolution, and I'd check the other settings and use it if you have something where it can be used. Sorry for the not so good news.

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Hp dv4-1145go is experiencing flickering on the screen[Taskbar] area


if u can do it try to open the screen cover remove the LCD screen clean it then fix it if possible do not put the screw very *** if docent work then u have to change the screen the problem may be the LCD screen

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I have a Flat screen Sony Bravia KDL-46S4100. Lines go across the screen horizontally about 6 inches apart. There is distortion especially on the right side mostly on lower right. What needs to be done to...


Are the lines all the way across the screen? or just a few? Solid black - or trannslucent?

Like this??

5af01cc.jpg
Horizontal drive has either data, voltage, or control problem from the pixel registry circuit......get it serviced before the problem spreads causing further damage.

However, in all likelyhood, the panel itself is bad. The Bravia line has had a bad rap about the faulty displays, and at $1800 replacement (plus labor) - it may be time to call SONY direct to complain!

Thanks!!
nc

Apr 02, 2010 | Televison & Video

1 Answer

Pinky red tinge horizontal lines near the taskbar in display HP Pavilion dv4


sounds like your power inverter is going bad. replace power inverter and see how that works. Other issue if not solved is probably lcd screen. Inverter's can be found cheaper used if you use the serial number on your old inverter for searching, seeing as how inverters are often used on many different of machines. FYI.

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