Macbook Pro 15" Early 2009 No backlight


hi all! im new in forums , first thread , first post :d, need problem guys, have 2009 mbp doesn't give me backlight, mac starts , works except backlight im informed in theme of possible 2a "white dot" fuse or de wled driver, logicboard model 820-2330-a, checked schematics board (only schematics because don't found boardviews free hehehehe) localized wled driver , fuse in board , im ready test multimeter, problem is... don't have idea how check it, yes... know testing driver continuity test, but... have tried test driver , doesn't give me continuity, tried in qfn chip , nothing, im doing wrong because impossible board totally bad if works well... question is:

can test driver correctly... method o technique can use?
test fuse same? (continuity test) or have test resistance?

me , hope stay in forums lot of time! :)
 



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