Question about Dell Inspiron 1525 Laptop Jet Black

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No screen if led lights plugged in

Hiya thanks for your reply,i have checked my new palm rest,and it is exactly the same as my old one,all the paper,and card etc are in place,and it is still stopping the screen from working if the led lights are plugged in.have you got any other ideas please

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  • mwit465
    mwit465 May 11, 2010

    Well since the palm rests have no electrical parts to interfere we have to assume something changed when you replaced them. I always try to re-trace my steps so to speak. So when you took the old ones out did you bump or detach a wire or move it over to contact another and create a short? What computer do you have, I'll check out the components and get back to you.

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I cracked the screen on my inspiron M5010 so I got a new one and installed it. After installation, the new screen has lines of all colors across the screen. I ran diagnostics and it gave me error code...


I would have the old Video Cable (LCD cable), AND the new Video Cable; checked with a multimeter set to OHM's (1K), for Continuity.

An inexpensive multimeter is about $5 to $12 bucks.
Suggest, take both Video Cables down to the nearest small computer repair shop, and have the resident tech check it for Continuity.
Should only be a couple of bucks.

"But it's a new LCD cable"

So?

New LCD cable checks fine, the problem is;
A) You are not getting the LCD screen side of the LCD Cable, plugged in correctly.
It may seem like it is.

Motherboard side connector isn't the usual male plug connector.
Looks simple to connect, but also in the same instance looks like it may be a problem child to connect.
The LCD screen side connector of the LCD Cable, can be tricky to get plugged in correctly.

It can be loose enough at that connection, that it will not make full contact; and your little peepers will not see it.

(Also needs to be re-taped after connecting to LCD screen)

2) LCD screen replacement could be the wrong one, or is a faulty unit.

3) http://www.ebay.com/itm/New-Dell-Inspiron-N5010-M5010-15R-LCD-video-flex-cable-4K7TX-04K7TX-50-4HH01-101-/400479996437?pt=LH_DefaultDomain_0&hash=item5d3e77ca15

With this LCD Cable it looks as though it may be easy, to Not get the motherboard side of the LCD Cable; plugged in tightly, and correctly.

Post back in a Comment, or Reply; at the end of this solution.

Regards,
joecoolvette

[If you can't get through using the above methods, then post your reply as a Solution.
FixYa has undergone a site change, and it seems certain functions are not working correctly.
After you post as a Solution, Fixya staff can clean it up.....
(They can put is as a Comment or Reply ]

May 07, 2013 | PC Laptops

2 Answers

Power on problems With Gateway Lt4004u Netbook 1gb 250gb Mini Laptop Notebook 10.1 10 Inch


When you connect the power adapter into the laptop, does the power LED light up? If not then - The battery adapter or the adapter's power lead or the laptop's power socket could be faulty. Check power adapter's DC plug that connects into the laptop power socket with a multi-meter, the voltage should be slightly higher than the voltage that is printed on the label on the bottom of the adapter. If the voltage is zero or way below the voltage that is printed on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK then connect it to the laptop and power it up, then look at the power/battery charging LED light and wriggle the power plug in the laptop's power socket. If the power/battery LED light flashes and in a certain position this LED light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard. This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. If you cannot DIY then I suggest you get a quote first.

Apr 04, 2013 | Gateway Lt4004u Netbook 1gb 250gb Mini...

1 Answer

Red lines and dots on screen.


Asus laptop?

What is the model number Alex? It's on the bottom of the laptop.
Post back in a Comment.

From your brief 'diagnosis', suggests there is a problem with the Video Cable.

1) Either loose at the motherboard, or loose at the screen Inverter,
(IF USED), or loose at the back of the LCD screen.

And/Or;

2) Video Cable is damaged. Stretched/Broken wire inside.

Suggestion would be to PHYSICALLY check the Video Cable's connections.
Visual inspection alone will not do. To -> Ensure the connections are tight, you have to physically try to plug them in tighter.

Do not, of course know what laptop we are talking about here.
(And only presume we are talking about a laptop; and an Asus one at that, because of the problem heading)

The Video Cable plugs into the motherboard, either in an area under the Keyboard; or under the Switch Cover.
(It can also plug into the bottom edge of the motherboard)

Believe easiest way to start off here..........

The Switch Cover is a thin strip of plastic, above the Keyboard; and under the Display Assembly.
Usually has the Power On button in it, indicator LED lights; and speakers. (IF option)

Later designs of laptops did away with using a Switch Cover, and went to just having it as part of the Palm Rest Cover, itself.

Further designs of laptops, also have the Power On button in the side of a Hinge. Usually the Right one.

Moving on........

From the motherboard, the Video Cable then typically routes by the Left Hinge.
Then it goes up into the Display Assembly.

IF a screen Inverter is used, one small cable comes off the Video Cable; and connects to one side of the screen Inverter.
The rest of the Video Cable goes on to connect to the back of the LCD screen.

A screen Inverter is used for CCFL backlighting.
(Cold Cathode Fluorescent Lamp)
GENERALLY, a screen Inverter is not used for LED backlighting.
(Light Emitting Diode)

If no screen Inverter is used, the Video Cable goes on to connect to the back of the LCD screen.
May be a small cable from it to the LED backlights.

From normal repeated opening, and closing of a laptop, the Video Cable may become pinched, and/or pulled on.
(Goes by the Left Hinge)
This can cause loose connections, as described above; and/or cause damage to the Video Cable.
(As described above)

If connections are found to be tight, then Video Cable is removed, and checked for Continuity.

A continuity test is performed with a multimeter, set to OHM's. (1K)
Each wire in the Video Cable is checked for continuity.

(In a continuity test, the multimeter sends electricity through the wire. Positive (Red) probe lead of multimeter to one end of wire, Negative (Black) probe lead to other end of wire.

It isn't the amount of the Resistance you are looking for, so much; it is JUST to see if you get a reading at all.
No reading on multimeter suggests there is a broken wire.

Also an assistant should be used, to gently wiggle the Video Cable; to see if you get an intermittent reading.
If so, this also suggests a broken wire.

You can take the Video Cable down to the nearest computer repair shop, and have the resident tech check it for a couple of bucks.
(If they do not know how to perform this simple test, GET OUTTA THERE. They are parts changers, and not tech's)

OR,
You may opt to simply replace the Video Cable.
Costs usually ranges from $4 to $12.
Have seen examples though, that may range $35.

That's about it for me until I have the model number.

NOT stating I can guide you step by step in these procedures, because it is an Asus.
Thank them for that. They do NOT like to release any info, such as a Service Manual, to the general public.

This antiquated type of thinking could run them out of business, IMHO.

HOWEVER, with your patience, and both of us conversing back, and forth in Comments; I have great expectations that I CAN guide you step by step.

'Ain't my first barbecue'

Post back in a Comment.

Regards,
joecoolvette

To add:
Some additional pictorial info that may help,

Asus Eee PC 1201n, and showing LCD screen side of Video Cable connection,

http://www.insidemylaptop.com/replace-broken-led-backlit-screen-asus-eee-pc-1201n-netbook/

With the style below, the Keyboard, Palm Rest Cover, and a metal Static shield need to be removed; in order to access the motherboard connection, of the Video Cable,

http://www.insidemylaptop.com/disassemble-asus-eee-pc-1215b-laptop/

Scroll down to the last photo.
At the Top/Left corner there is a Yellow Arrow, which points to the motherboard side connection, of the Video Cable.
(Of this particular style of laptop)

Video Cable example for Asus Eee PC 1215P,

http://www.ebay.com/itm/NEW-ASUS-Eee-PC-1215-1215N-1215P-1215T-LCD-Video-Cable-1422-00SF000-/251214440310?pt=LH_DefaultDomain_0&hash=item3a7d8c2776

Two views are shown of the same cable.

The wide White connector at Top, with the goldish Mylar plastic on it, is the LCD screen side connector.

The smaller Black connector shown at bottom plugs into the motherboard. The small Black wire with the eyelet terminal on it, connects to a Ground screw.

No screen Inverter is used with this model.
The laptop uses a series of LED's for a Backlight,

https://www.laptopscreen.com/English/model/ASUS/EEE~PC~1215B/

Apr 01, 2013 | ASUS PC Laptops

1 Answer

I have a dark shadow on the bottom right corner of my new laptop


OK Mel, it's your dime.

The LCD screen is bad. It may be just the Backlight, but since you purchased this baby new; it will have LED backlighting. There is NO replacing the backlighting, there is ONLY replace the LCD screen.

Primer if I may;

An LCD screen does not produce light.

http://solutions.3m.com/wps/portal/3M/en_US/NA_Optical/Systems/BehindTheScenes/Optics101/

(Click on the monitor image)

An LCD screen needs an additional light source.
A Backlight is the additional light source.

A Backlight can be a CCFL, (Or two of them), or a series of LED's.
(Light Emitting Diode)

A CCFL is a Cold Cathode Fluorescent Lamp. (Bulb)
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

Average thickness is 2mm. That is a little larger than 1/16th of an Inch. (-> O <- approximate thickness)
Average length is almost as long, as the LCD screen is in height.

General example,

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

(View the last 8 photos)

Newer laptops like yours use a series of LED's.

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

LED backlighting does NOT use a screen Inverter.

When an LCD screen that uses LED backlighting, has problems with the backlighting, the entire LCD screen is replaced as a unit.

Is the problem with the LCD screen itself? Could be. The entire LCD screen is replaced. Either way, replace LCD screen.

Now,....the above is just GENERIC information.
I need the laptop manufacturer name, and model number. The model number may be on the Palm Rest Cover, to the right of the Touchpad.
It WILL be on the bottom of the laptop.
Post back in a Comment.

This way I can see if there is a link to give you for a free Service Manual, and perhaps some pictorial information also.
Then I will guide you step by step, and we'll get that LCD screen replaced.

It isn't hard at all, I assure you. YOU CAN do it.

Regards, joecoolvette


(Psst, they don't have them anymore because it was a special sale.
Whoever the laptop manufacturer is, though; is obligated to repair it. Kinda hard to get them to replace the entire laptop. DOES happen though.

Laptop was like that from the factory. Is not the consumer's problem, is the factory.

I don't care if it came from Best Buy, Tigerdirect, Newegg, or your uncle; the FACTORY is obligated to repair it. DOES NOT matter if it was a Black Friday sale, Christmas sale, or an Easter Egg hunt.

DO understand about the time frame thing, though. Plus DO commend you for your willingness to repair. It is people like you that built the world, not sat by and watched)

Nov 26, 2012 | PC Laptops

2 Answers

Back light sometimes works


If your laptop appears to boot up and the hard disk LED flashes, then the problem is probably a back light fault. This can be a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Nov 10, 2012 | Acer Aspire As5250-0327 320gb - Perfect...

1 Answer

I need a replacement screen and i'm not sure which cffl/backlight to order


Here are the eBay search results for your exact system model -

http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1313&_nkw=Toshiba+Satellite+L355D-S7809+screen&_sacat=0

Sep 20, 2012 | Toshiba Satellite L355D-S7809 NoteBook AMD...

2 Answers

Replace a keyboard


Most laptop keyboard are secured by screws on the bottom of the laptop. The screws that fix the keyboard may have a tiny heyboard symbol against the screw.
When you remove the keyboard screws you can then lift the keyboard off the laptop. The keyboard is connected to the motherboard via a flat ribbon cable, it may have a connector on the cable or a locking clip on the motherboard. Release this ribbom cable from the motherboard, don't pull on this cable or you may damage the ribbon cable.

Keyboard replacement, LCD screens for mobile phones, Ipodsand computer equipment are available from this WEB site.http://www.yallstore.com/index.php?main_page=advanced_search_result&search_in_description=1&zenid=1lrjst3ncshlb4c7frn9bev3c3&keyword=keyboards.

Mar 02, 2012 | Gateway NV7802U Notebook

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Pavillion dv2025nr Blank Screen, but all LEDs on.


VGA card problem..that's what tech told me & changed it 3 times...but still laptop goes off.(exactly like u described)...they finally said need new motherboard??? so VGA will not do this again!!!! I don't know, If I change motherboard...will this happen again...is it worth it??? My pavillion dv 2000 is only 1.5 years old..was expensive??/

Oct 01, 2009 | HP Pavilion dv2000t 14.1" Notebook Laptop...

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Upgrading memory on my Compaq Evo N400C notepad


i have the same Compaq Evo N400c its a ram under the keyboard check there to upgrade it i got Compaq Evo N400c 1gb ram

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2 Answers

Toshiba a100 laptop


Definitely try without the battery. These models are known to have a "short" problem, usually with the palm rest, which causes this failure, although it usually is more sporatic, and doesn't happen 100% of the time.
Also, can you remove all but 1 piece of memory.
Good luck, and let us know what happens.

Mar 19, 2008 | Toshiba Satellite A105 Notebook

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