Chosen Solution
Hello, while using my MacBook the other day it started crackling and smoke came out of the keyboard. Everything seems to be working with the exception of the wifi. I figured the wifi antenna fried. However when I opened it up to investigate there is a small black capacitor or diode that fried on the main board. It has NEC CN7 on it. Where can I buy this? I am having a hard time trying to find out what this is.
@slimfitz that is a 33uF 20% 16V Tantalum-Poly capacitor in a Case-B3 package. Besides having the schematic it helps to know how to determine this based on the marking. NE C NE for NeoCapacitor C Production Date Code (Capital C = manufactured in Mar. 2017 CN7 Rated Voltage 16V Capacitance 33uF Positive Polarity to the left with two lines of markings =B case Datasheet from here
It’s a tantalum capacitor. I haven’t located what the rating on that should be. similar to this: https://www.vishay.com/docs/40180/tmcu.p… If anyone has a datasheet for this model, they can get you the Farad / Voltage ratings. It appears to be in parallel with another capacitor. Usually (not always) when they place 2 in a set like that, they have the same rating. You might check the rating on it’s neighbor and compare it to the values for the pair a bit to the left.
