Macbook 5,1: everything works, but in a dark screen.

My Macbook 5,1 screen is almost completely dark. If I point a flashlight at the screen I can see everything is working fine: It boots, I can open apps, etc. It's just too dark. Someone told me I need to replace the logic board, and that's $1,100 at the Apple Retailer in my city.
I've read some articles saying it`s the backlight or the converter cable... How do I know if I actually have to change the logic board or just fix the display cables? I really don't trust that Apple retailer, because of previous experiences... but they're the only authorized ones around here.
Any help appreciated.

Hi Leo i have the same problem...and nobody has replied to my post either!
I actually took my macbook to an authorized apple store and they did replace my display cables...however the screen remained dark. So they took a look at the logic board and evidently when the display cables crapped out they created a spark which put a teeny tiny burn on my logic board that somehow prevents the screen from lighting up properly.
Like your Apple Store, they told me i have to replace my logic board...but that if i didnt want to pay the $1000 i might be able to find a smaller unauthorized store who is willing to do component repair (fix the little burn on my existing logic board for much less $.)
Anyway im just interested to hear what you decided to do? Im totally stumped and and any advice/feedback would be helpful!
Thank you!
Tracy

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