White macbook´s screen goes black

Hey all,
I hope this will helpme  solve this problem. As suggested on ifixit i reinstalled lion then changed the inverter and cable and the problem persisted. A friend has an old macbook that is in bad condidtion but with a perfectly functioning screen, and he´s not using. Would it solve the problem replacing my screen with the old one (the one that still works)? would it make sense? how can i make sure that they are compatible?
Thanks
Gio.-

Try Resetting the System Management Controller (SMC)

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