Can anyone help identify smd components on my logic board?

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MacBook Pro 13インチ Unibody Early 2011

2011年初期のモデル。モデル番号はA1278 / 2.3 GHz i5 or 2.7 GHz i7 プロセッサー。

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Anthony @anthony45323

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投稿日: 2012年11月5日

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Can anyone help identify smd components on my logic board?

Hi all

I have cleaned the the logic board of my early 2011 macbook pro 13". When cleaning 2 small components and a larger component were found to be damaged and hence removed.

I do not know the value they measure and was wondering if anyone with the same board would be kind enough to measure the components and let me know of the values. I have circled the components on the images below.

I would be so grateful if someone could help as I cannot find informational such as schematics and have been trying to fix my macbook for aaaagges. PLEASE HELP?

Many thanks in advance to anyone that will help..

Cheers

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oldturkey03 @oldturkey03

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This is a really old question but I thought it would be okay to answer. Just in case somebody is having issues with their 820-2936 board and finds the same components to be faulty.

Reference designator R5095 is a 10K 5% 1/16W resistor in a 0402 package

Reference designator C4902 is a 22UF 20% 6.3V cerm capacitor in a 0805 package

Reference designator C4903 is a 0.1UF 20% 10V cerm capacitor in a 0402 package

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John Savio @johnsavio1185 評価: 1.5千 4 4 2 · Answer 1 · 2012-11-05T09:46:56-07:00

Hi, the only way a person is going to be able to help you is if they have a capacitance meter with them to measure the capacitance.

How to identify SMD capacitors :

- Ceramic capacitors : generally small, grayish or brownish body with metallized edges, generally unmarked -> capacitance meter !

Values under 1nF generally are C0G dielectric (high quality), higher values are X7R, Z5U, etc, good enough for supply bypass... Color is generally greyish for C0G and brownish for other dielectrics, but the size is a guide : a small cap with a large value cannot have a good dielectric...

- Tantalum : most are molded , black or sand body, marked value/voltage, band identifying positive polarity, electrodes are formed metal. Some are unmolded with an orange body, metallized electrodes, positive having a protruding bar, value not marked.

- Electrolytic : Most are miniature standard types with a plastic base and formed wires, value marked, band identifying negative polarity.

http://www.diyaudio.com/forums/solid-sta...

Hope this was useful. Good luck.