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Posted by Quaoar on May 6, 2008, 7:47 pm
Please log in for more thread options BillW50 wrote:
> Big Bubba typed on Fri, 2 May 2008 16:10:16 -0400:
>> I have a Dell Inspiron 8600 laptop with a 15.4 inch screen. A few
>> weeks ago the screen went dark; you could barely see the screen. I
>> hooked up an external monitor and it works fine.
>>
>> After doing some research it seemed the inverter was the likely
>> culprit. I bought one off of ebay and installed it. I still have
>> the same problem.
>> Any idea what else it could be? If it is a bulb could you point me
>> in a direction on how to fix it?
>>
>> TIA.
>>
>> BR
>
> Yes, dim display is almost always the inverter or the lamp. Although in
> most cases I know, dim laptop displays is an old worn out lamp. Most
> lamps only burn about 25,000 hours. Some can get about 50,000 if you are
> lucky.
>
> The lamp is attached on the side of the LCD. The inverter has two high
> voltage wires (with about up to 1800 volts) going to it. Just following
> the wires and you will find the lamp. Some designs this is a nightmare
> and some they are pretty easy.
>
> And remember you can't get any lamp that will fit. If they are not meant
> to work together (lamp and inverter), a few things can happen.
>
> 1) Won't light or too dim
>
> 2) Either or can run very hot and burn something
>
> 3) They say the lamps can explode
>
The best choice is to buy a working display for the identically same
notebook from eBay, etc., with a 30 day warranty.
I believe that, from all of almost ten years of reading CSL, that the
inverter is a far secondary failure from the CCFL lamp. (Yes, CCFL and
'lamp' is redundant!) The problem with the lamp is that each mainboard,
coupled with the display, requires a specific lamp for replacement.
Lamps are not in general sold retail, and a specific lamp must replace
its identical equivalent in the display.
Next, is how to replace that lamp and not destroy the display unit in
the process. Some displays are trouble, some are not.
Q
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