Question about Dell Inspiron 1525 (dndppa1_3) Intel Core 2 Duo T5550 (1.83GHz/667Mhz FSB/2MB cache) 120GB/3000MB PC Notebook

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LCD problems on my Dell Inspiron 1525

When I turn the laptop on I can only see the display on the bottom of the screen. THe rest of the screen is white.Please provide help as to how to resolve this issue

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  • javedinameri Jun 18, 2009

    No the laptop is not under warranty. I always want to do the things myself with help from professionals. I fixed like 2 or 3 laptops this way.

    Thanks

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If your laptop is under warranty then its better to give it to the shop that you bought the dell laptop. your problem is in the hardware of lcd so i think it will be better to check it out with a professional technician

Posted on Jun 18, 2009

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Streak in LCD Screen


Judith,

I'm going to state in my own words, as to what I think you have stated, originally; (Please bear with me as this may be clumsy)

" I have a Dell Inspiron 1525 Notebook PC.
This laptop has problems with the Hinges, and Base Cover.

The Base Cover area where the Hinges, and their respective screws go, is beyond repair. To properly repair it, I would need to purchase a Base Cover, Hinges, Hinge Brackets, and a 'Bezel'."

At this stage I am a little unclear,
" I think I would have to buy the entire bottom of the case,
{ Base Cover. Got it }, and replace the bezel that had pieces break off at the hinges too,....."

Hmmm.....Bezel....
Bezel that is close to the Hinges,..........

1) The Display Bezel that is in Front of the LCD screen? Thin plastic frame that resembles a picture frame? Bottom part has Hinge Covers formed in it?

2) Palm Rest Cover?
The cover that covers the top of the Body, of the laptop?

The major portion is below the Keyboard towards you. The rest of the Palm Rest Cover, is two rectangular pieces on each side of the Keyboard.

One of these two pieces broke? (Connector piece?)

3) Center Control Cover?
Is above the Keyboard, and below the Display Assembly.
Has the Power on button in it, for one.

To go on;

You purchased the same model on Ebay?

Same exact model number? Look on the bottom of the laptop.

Reasoning?
Primer:

An LCD screen cannot produce light by itself. It needs an additional light source.
A Backlight is the additional light source.

A Backlight (Present technology), can be a CCFL, or a series of LED lights.
The Dell Inspiron 1525 series used a CCFL.

Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

(Approximately 2mm Thick, by almost the height of the LCD screen, Long.
2mm is a little larger than 1/16th of an Inch. { .0787 )

A screen Inverter is used to convert the power (Electricity) from the laptop, for the LCD screen, and the Backlight.

Point?
The screen Inverter, and the LCD screen, are a MATCHED unit.

Looking at the back of both LCD screens, what is the Dell part number/s, or LCD manufacturer model number/s?

[ One LG example from an article on InsideMyLaptop,

http://www.insidemylaptop.com/replace-lcd-screen-inverter-dell-inspiron-1525-laptop/

Scroll all the way down to Step 14. Read under the first photo, and view the second photo ]

Want to see if the LCD screen you are using, matches the Inverter in the laptop.

Dell, just like all laptop manufacturers, use different manufacturers of LCD screens. (LG, Sharp, Hitachi, etc)
May go with one for a few years, then off to a different one. (Or one's)
May change when a particular laptop model comes out.

The LCD screens may be slightly different models. In turn they would use different screen Inverters.
This = No.

4) Translucent 'streak' going from bottom left corner, to upper right corner.

That translates to;

A) Video Cable damage (Dell = Display Cable)
B) LCD screen damage
C) Bad graphics chipset

Have you used an external monitor to diagnose? A VGA monitor?
If so disregard the following;

A) Laptop OFF, monitor OFF. Connect a VGA monitor to the laptop.
You can use a CRT monitor (Looks like a small TV), or a flat LCD screen monitor that has a VGA cable attached.

Example of a VGA Cable, and VGA port, (Connector),

http://en.wikipedia.org/wiki/VGA_connector

Connect to the left side of the laptop.

B) Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.
By default the display should show on the external VGA monitor.
If not:

Hold the Fn key down, simultaneously tap once on the F8 key.
Still nothing showing on external monitor?

You have at least three display options;
1) Internal monitor of laptop ONLY
2) Internal monitor of laptop AND external VGA monitor
3) External VGA monitor ONLY.

Try again.

If the display is the same on the external VGA monitor, you have a bad graphics chipset. (G.P.U.)

If Not, the problem lies in the Display Cable, or screen Inverter, or LCD screen.

As you have seen the Display Cable connects to the motherboard, then routes up under the Left Hinge, and up into the Display Assembly.

The Display Cable can be damaged from normal use, over time.
Now add to it that you have had extensive Hinge problems.

If the sheath of the cable shows any visible damage, the tiny wires inside stand a chance of being damaged, also. (Stretched/Broken)

I would suggest testing the Display Cable. Perform a continuity test with a multimeter, for each wire in the Display Cable.

[ An economical multimeter can be purchased for around $8 to $12.
Available in a multitude of stores. An auto parts store is but one example.
Or perhaps you know someone who has a multimeter. Analog or digital is fine]

C) Did you reconnect the Wireless Antenna Cables correctly?
Reaching here but inquiring minds want to know.

http://support.dell.com/support/edocs/systems/ins1525/en/SM/display.htm#wp1179838

http://support.dell.com/support/edocs/systems/ins1525/en/SM/minicard.htm#wp1181360

[ The above is from - Dell Support > Inspiron 1525/1526 Service Manual,

http://support.dell.com/support/edocs/systems/ins1525/en/SM/index.htm

]

D) Would like to know what you did to follow Anti-Static Precautions?


I'm not following on the points of;

1) You installed what you considered to be a working LCD screen, into a laptop you bought off of Ebay; and the display stopped working on the Ebay laptop?

Or;

2) Or is your statement, that after receiving the Ebay laptop, your original laptop would no longer show graphics on it's display?

IMHO I would use the case parts of the Ebay laptop, and rebuild your original laptop.

Awaiting corrections, and possible questions.

Regards,
joecoolvette

Mar 20, 2012 | Dell Inspiron 1525 Notebook

1 Answer

DELL INSPIRON 1525 LAPTOPPOWERS UP BUT SCREEN IS BLACK


Hi,

If you have an external monitor, try connecting the laptop to it, then toggle FN+F8 to project display from lalaptop to external monitor.

If the external monitor does not have a display aswell (totally blank) , then its a problem with the video card.

You can also run an LCD Bist test by turning off the system , then while the system is turned off press D + power , If you dont hear a beep but no display at all, then its an LCD problem.


Hope this helps


Thank you.


Dennis

Oct 20, 2011 | Dell Inspiron 1525 Notebook

1 Answer

Screen particially blacking out with vertical lines at bottom of my DELL laptop. at the bottom of laptop screen there are vertical lines @ 2" they are blue, dark gray,white, purple, light green lines....


Tryconnecting an external monitor to the laptop. You may have to select the videooutput to display on the external monitor by holding down the blue key and pressing the blue CRT/LCD (located on one of the keys, likeF8,F9, etc..). If the problem occurs on the external monitor with the batteryor AC power, then you have a problem with either the video card or motherboardin the laptop. If the problem does not happen using the external monitor thenyou laptop's LCD display is going bad.

Jul 31, 2011 | Dell Inspiron 1525 Laptop

1 Answer

Dell Sceen I have a Dell 1525 Laptop the screen got cracked to day. Looked up screen, 1280 x 800 resolution, do not know which vga/wxvga etc I need to buy to replace. Dell show it as being a Y599 screen....


justinbur167 it's a WXGA screen. I don't know if yours is Glossy, or a Matte finish.

This is one example,

http://www.laptopscreen1.com/ls1-froogle.shtml?brand=Dell&family=Inspiron&screen=1525&size=15.4&res=WXGA&backlight=1+CCFL

Here is another example,

http://www.laptopscreen.com/English/model/Dell/INSPIRON~1525/

You'll note that offerings list With Inverter, and Without, also Glossy, or Matte finish.

[An LCD screen cannot produce enough light by itself. A Backlight is used to provide the additional needed light source.

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a Much smaller scale.

An Inverter is used to invert power from the laptop, for the LCD screen, and the Backlight ]

This is the Service Manual for the Inspiron 1525 Notebook PC, (Free),

http://support.dell.com/support/edocs/systems/ins1525/en/SM/index.htm

Clicking on Display at the bottom of the first column, will provide information in replacing the LCD screen.
For any additional questions please post in a Comment.
Regards,
joecoolvette

Apr 04, 2011 | Dell Computers & Internet

1 Answer

My dell inspiron 1545 is no display . onle work in extarnal monitor? how can i slove this problem?


If only an external works on that, then you should replace the lcd screen of your computer. Motherboard is good.

Oct 08, 2010 | Dell Inspiron 1525 Laptop

1 Answer

Replaced lcd display for dell 1525. need help!


Try re-connecting/re-seating the video cable/connector again.

Feb 13, 2010 | Dell Inspiron 1525 Notebook

1 Answer

Dell laptop broke at hinge in bottom left corner of screen.


You can buy replacement hinges here

http://shop.ebay.com/?_from=R40&_trksid=p3907.m38.l1313&_nkw=inspiron+1525+hinge&_sacat=See-All-Categories

Installation instuctions are here

http://support.dell.com/support/edocs/systems/ins1525/en/SM/display.htm#wp1179838

Dec 30, 2009 | Dell Inspiron 1525 Laptop

1 Answer

I've got a Dell Inspiron 1525. When I power on the unit, the LCD shows the Dell startup screen, then a whinning noise and the screen goes black. Sometime shortly there after the Windows screen appears but...


This sounds more like a hardware issue. Now you say that the external display output is working fine. It could possibly be a problem with the lcd display itself shorting out. If there was a problem with the video hardware then I do not think you would be able to get the external display working either. The whinning noise could be coming from the lcd inverter.

Dec 14, 2009 | Dell Inspiron 1525 Notebook

1 Answer

Black screen with mouse pointer after lcd screen repair


If you can see a mouse pointer clearly, you have a software issue especally if see a post..

Apr 20, 2009 | Dell Inspiron 1525 Notebook

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