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 Post subject: MacBook Pro 15 - help identifying component?
PostPosted: Fri Aug 27, 2010 11:17 am 
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Joined: Thu Aug 26, 2010 4:30 pm
Posts: 3
I'm trying to troubleshoot an A1150 logic board that won't boot. After looking vey closely at the board, I noticed there's a surface-mount inductor (L2507) that's broken off.

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Trouble is, I have no idea of the value of the inductor. Does anyone here have access to a schematic and/or parts list to help me identify it? Also, the schematic would indicate the function of the inductor and help me figure out if it's likely causing the no-boot situation.

Any help on this would me MUCH appreciated.

best,
JohnB


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 Post subject: Re: MacBook Pro 15 - help identifying component?
PostPosted: Sat Aug 28, 2010 9:44 am 
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Joined: Thu Aug 26, 2010 4:30 pm
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Update: I managed to get ahold of a schematic, but as luck would have it the schematic doesn't indicate the actual value of L2507 in mH or ┬ÁH. :(


Image


It does list some sort of resistance rating (0.28 Ohms) and what I believe to be the package type (1206), but not the inductance value.

Does this mean that the inductance value doesn't matter? Maybe someone who knows more about electronics than I do can enlighten me on this.

Any help will be much appreciated. It would be a shame to have to trash this logic board due to a 25-cent inductor!

JohnB


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 Post subject: Re: MacBook Pro 15 - help identifying component?
PostPosted: Mon Sep 06, 2010 6:56 pm 
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Joined: Thu Aug 26, 2010 4:30 pm
Posts: 3
Bump...Can't anyone here help me out with this?

Thanks in advance,
JohnB


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