Laptop LCD inverters work for a few minutes and then fail

Acer Aspire 6930-6809 16" notebook - cor...
January 19, 2013 at 06:45:28
Specs: Windows Vista, Intel Core 2 Duo T6400/4GB
The screen on my Acer Aspire 6930 went almost totally black. I searched the net for an easy and inexpensive solution. I found out that the problem is either with the LCD inverter or the fluorescent light (CCFL). I decided to replace the inverter first, since it was cheaper. After replacement of the inverter, the screen was working fine. I turned the Laptop off and on three times, but the next day when I turned it on, the screen was black again. I thought it was probably a bad inverter, so I got another one (from the same online seller).
I replaced the part for the second time and everything worked fine, until I put the PC in hibernation mode for a few hours. When I came back to use it, the screen was black again (you can hardly see the screen with flashlight). I can think of two possibilities, 1- Both inverters were defective and I should buy another one from a different source, or 2- The input DC voltage to the inverter is higher than what it’s supposed to be, thus burning the inverters.

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#1
January 19, 2013 at 14:11:14
"Both inverters were defective and I should buy another one from a different source"

That's a strong possibility if they were bought within days of each other - - the store could have a bad batch. Try another source.

"The input DC voltage to the inverter is higher than what it’s supposed to be".

That would only occur if the you were using the wrong a/c adapter, in which case I would expect more than just the inverter to be damaged.


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