Chosen Solution
See picture attached. It seems to be a blown transistor (as reece pointed out it is actually a capacitor) next to the Airport card. The machine works fine, but I feel the urge to replace it. What does it do and where do I buy a new one? The soldering job seems pretty straight forward. The identification seems to be “NEL AV7” or AY7.
The schematics for this board is here. On google image search the transistor is identified as “NEC AV7” instead of “NEL”.
Below is Apple’s reference followed by the specification of the tantalum capacitor (assuming board number is 820-3437). You should be able to buy these from places like Farnell, Digikey or Mouser, depending on where you are located. Would definitely replace it before it causes a problem. C7582 62UF-0.023OHM 11V TANT-POLY 20% CASE-B2S-1
I have blown capacitor also but it was NEX AV7, will it be okay to replace it with NEE AV7 or NEL AV7? I discovered that the 3rd letter indicates a year, will ot matter when it cpmes on replacing one of this? I only have one blown cap btw
