Question about Dell InspironTM 1501 Notebook

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Bottom right corner of the LCD screen is very hot

I have changed the inverter twice. The screen bottom right corner gets very hot in a very short time. The inverter is not so hot but the screen corner actually burns my fingers. The screen is out of the laptop, so no bad contacts.
The screen is working fine, but it gets dark in the hot corner. It is a Samsung LTN141WD-L01 from a Dell Inspiron 640m.
Can I change something, inside the screen, like the backlight? or shall I try to find a new screen? Thank you for your help

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I would first search the internet and Dells website to see if there is a recall on this item. If there is, they will replace for free.

Changing the inverter in screens always seems to complicate the LCD. I prefer to just purchase a new screen and everything works great. I replaced an inverter on a couple and had to change them again and again do to them slipping.

Replacing the screen is a bit more expensive but will save you time and money in the long run.

Posted on Oct 03, 2009

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Hi,

welcome to fixya and thank you choosing my service..

OK,that is the most and common problem of all LCD TV...

Usually dim and totally have no back-light is cause of bad inverter board.One of the inverter board is shorted that cause dim light and crackling sounds..

This are the sample images of inverter board.
1_22_2012_1_29_43_am.jpg

to make sure that the problem is on the inverter board kindly try to disconnect/unplug it from your TV and power ON then observe if the crackling sounds remain or not..If the crackling sounds gone replaced the inverter board..Also I need to how many inverter board you have? if 2 or more disconnect it one by one to determine if where is the specific faulty inverter board..

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I need the picture your TV screen..just send it to chesterpendilton@yahoo.com

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1 Answer

Lap top dark screen, with system working fine. plugged on external vga, it works.


90 percent of the time the problem is the Inverter.

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

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp. (Bulb)
Similar to the Fluorescent lamps used in home and businesses, but on a MUCH smaller scale.
(General size is 3 to 5 inches in length, and half the thickness of a No.2 pencil)

An Inverter is used to provide power for the LCD screen, and the Backlight.

An Inverter reduces the power coming from the laptop, for the Backlight.
An Inverter increases the power coming from the laptop, for the LCD screen.

An Inverter is a small circuit board located inside the Display Assembly, behind the Bezel, and usually towards the bottom of the LCD screen.

This is a typical example of an Inverter. It is NOT THE Inverter that you will need.
You have to match the Inverter to the LCD screen. has to be THE Inverter.

http://www.lcdparts.net/InverterDetail3D.aspx?ProductID=2432

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I hope this help you out.

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