macbook pro a1278 no light ,fuse is gone ,put new fuse same

Remplace Wled Driver

Macbook Pro 13"
Device LP8543 Pin 1 is lower left and counts counter clockwise around the device.
Pin Resistance to ground
1 0
2 1K
3 124K
4 100K
5 0
6 >1M not connected
7 >1M
8 19K
9 0
10 not connected
11 21K
12 >1M
13 >1M
14 >1M
15 0
16 >1M
17 >1M
18 >1M
19 not connected
20 0
21 >1M
22 203K
23 400K
24 290K

need schematic 820-2936-b
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cannot idetify this ic need schemaic

that is backlight ic you buy it From ebay LP8550 A1278 A1286 2011 2012 LCD LED BackLight BGA Power IC Chipset

Hy,

Have you check the lvds connector already? I have meet this error some times and the faulty component was the wled driver IC or the LVDS connector. (There are some amateur who don't know to disconnect it by a normally way.)