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Dec 28th, 2003
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LCD troubles..works with monitor...

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Hi I have been trying to get my Dell inspiron 2500 to show something anything on the lcd but to no avail...it works with an external monitor.
I have tried to reset the flex cable but nothing...

When I start it up the screen is jetblack! then it flcks to a grayish blue then at the point that windows would be on the screen it show a light gray with vertical stripes.
This is a used laptop no warenty! So I have to fix this myself..Any glues what to do?

:rolleyes:
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S911houston is offline Offline
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Dec 28th, 2003
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Re: LCD troubles..works with monitor...

Quote originally posted by S911houston ...
When I start it up the screen is jetblack! then it flcks to a grayish blue then at the point that windows would be on the screen it show a light gray with vertical stripes.
Does it have a floppy? Can you boot to DOS? If so, can you see a text screen? What version of Windows are you running? The prognosis is not favorable, but all is not lost.
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TallCool1 is offline Offline
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Dec 28th, 2003
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Re: LCD troubles..works with monitor...

Hi the laptop has a floppy(but why is that important) ..Its boots up to windows with an external monitor..(the unit works fine)There is nothing on the LCD...it start out black then goes to light greenish white then when windows is up and ready the screen goes gray...I was thinking flex cable need to be replaced?....
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Dec 28th, 2003
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Re: LCD troubles..works with monitor...

Quote originally posted by S911houston ...
Hi the laptop has a floppy(but why is that important).
I was trying to see if any text showed at boot-up. It's clear that your backlight is coming on, but nothing else.

It's possible that the flex-cable is bad, but unless it's kinked or obviously cut, that's extremely unlikely. What happens much more often is that the unit is dropped, the liquid crystal panel itself shifts in relation to its contact pads and loses its electrical connection.

The LC panel connects to the electronics via an elastomeric (rubber-like) contact assembly. It's a series of fine, parallel wires molded into a block -- like encasing a comb in rubber. The wires are insulated from each other, but exposed on the contact ends between the panel and the driver printed-circuit board. It doesn't take a lot of stress to dislodge things.

I haven't had much luck fixing this kind of problem. It usually requires a special jig or fixture to ensure proper alignment of all the elements.
Last edited by TallCool1; Dec 28th, 2003 at 4:09 pm.
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TallCool1 is offline Offline
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Jan 3rd, 2004
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Re: LCD troubles..works with monitor...

HI I was wondering if it is posible to use a different LCD in my laptop? or do I need the exact LCD
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Jan 4th, 2004
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Re: LCD troubles..works with monitor...

Quote originally posted by S911houston ...
HI I was wondering if it is posible to use a different LCD in my laptop? or do I need the exact LCD
Exact replacements only, unfortunately, usually matched by brand and series. It may cost you more than the used machine itself.
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TallCool1 is offline Offline
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Jan 5th, 2004
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Re: LCD troubles..works with monitor...

Thanks..I was able to get two P/N 7F090 and 8F086. How could I fine out what LCD are they?...and Is the away to fined out if another laptop uses the same LCD?...
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S911houston is offline Offline
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Jan 8th, 2004
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Re: LCD troubles..works with monitor...

try the user forums on Dell's website, the guys there can cross-reference the part#s to which models they fit.
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whipaway is offline Offline
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Jan 9th, 2004
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Re: LCD troubles..works with monitor...

Thanks for the replay ! will do!
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S911houston is offline Offline
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Jan 28th, 2004
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Re: LCD troubles..works with monitor...

[QUOTE=TallCool1]I was trying to see if any text showed at boot-up. It's clear that your backlight is coming on, but nothing else.

It's possible that the flex-cable is bad, but unless it's kinked or


Hi.I was able to get another LCD. This one works but has a Red stripe from top to bottom...is there anything I can do to fix it?...oh yea it also has a couple of light circular spots any I deas?
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This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.
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