missing smd component

00ruy00

macrumors newbie
Original poster
Aug 7, 2012
3
0
hi, a few weeks back my macbook pro 15" i5 bought in usa in 2011 started to act funny and freezing after a couple of minutes of being on. i open it up and found 2 resistor almost loose, i try to clean the small are and lost 2 smd components marked as number 1 and 2 in the picture. it looked like a single drop of liquid in the back of the logic board. so after i lost the components i removed another 2 from a faulty ati hd pcix graphics card and solder them back to my logic board but with no luck...

so im looking four a good sould with similar laptop to test the components and help me identify the missing smd's. im still not sure if its a resistor or capacitor...or any other.

many thanks in advance, hope somebody can help me.

i manage to get the schematic draw for this logic board, but i need help to decode it :)
 

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nbsche

macrumors newbie
Aug 8, 2012
1
0
02 missing parts:
1. Resistor R8540 = 1K 5%
2. Capacitor C8503 = 0.1uF 10% 16V
Logic Board: 820-2532 - check component at Page 74
Logic Board: 820-2850 - check component at Page 78
Logic Board: 820-2849 - check component at Page 79
 

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00ruy00

macrumors newbie
Original poster
Aug 7, 2012
3
0
wait theres one more missing..

02 missing parts:
1. Resistor R8540 = 1K 5%
2. Capacitor C8503 = 0.1uF 10% 16V


however now that im looking closely to the pictures u sent me in sort of cad draw it looks like there is one more missing, could u just double check the pictures again.
i remenber earing something inside the mac when "rocked", i thought it was just a tiny piece of plastic or something else, aparently it was infact a smd part...its was not there when i first open it up so i guess there was only 2 missing.
could you indentify the 3rd missing part?

i could do with some tips on schematics :)
 

gec

macrumors newbie
Apr 15, 2015
2
0
02 missing parts:
1. Resistor R8540 = 1K 5%
2. Capacitor C8503 = 0.1uF 10% 16V
Logic Board: 820-2532 - check component at Page 74
Logic Board: 820-2850 - check component at Page 78
Logic Board: 820-2849 - check component at Page 79
Hi, where i find the circuit schematic..or component map?
like this

I have only electrical schema for my macbook pro 13.3". i have a usb problem.
I think to replace RCLAMP0502N smd component.