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N_Cook N_Cook is offline
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Default CCFL & Inverter problem

wrote in message
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On Mon, 22 Aug 2011 14:19:37 -0700 (PDT), benitos
wrote:

On 22 août, 15:28, wrote:
On Mon, 22 Aug 2011 08:37:16 -0700 (PDT), benitos





wrote:
Hi ,

Have a Toshiba Satellite laptop with a "no display" symptom.

After checking it, i can notice a very dim picture , the CCFL doesn't
lit.

After opening it , I found that the inverter had a fuse open .

Replace the fuse but after , the computer did not power up.

There was a short on the inverter boards so I replaced it with the
same model.

Now , the computer boots up , CCFL lit for a few seconds but shuts
down after.

Is is possible the the CCFL is bad also ?

Thanks for your help...

It's possible. When the image first appears, is there a pinkish hue?
Also, inspect the wires from the inverter to the CCFL carefully.

PlainBill- Masquer le texte des messages précédents -

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Model is P200-MB1

Only half of the CCFL lit (kind of pink) and shuts down.

That indicates the tube is old, and dying. It gets a pinkish tint
and the current rises. Replace the tube and you will have a good
display.

PlainBill



Does one inverter supply two tubes? And if disconnecting the problematic
tube , as a proving exercise, do you have to mitigate for overdrive to the
single tube, even for say 5 seconds of proving use?