Released October 24, 2011 / 2.2, 2.4, or 2.5 GHz Quad-core Intel Core i7 Processor

237 Questions View all

Three broken components on main circuit board, help identify them?

Hello guys,

So I have a Macbook Pro 15" Late 2011 edition, I believe with the Radeon 6770, though I cannot confirm anymore since it won't turn on. It actually overheats and it also has a magenta tint due to a broken connector. So, one fan is bad, (the one on the right if you have the bottom case off), two components are broken off, and one connector is bad.

I am trained in micro-soldering and run repair, so I can fix the damage...but I have no idea what each component is and where to buy it. I could use some help with that part.

Here follows images I took with my microscope:

Block Image

Block Image

First component...no idea how it broke off or where the component is. You can see it is between the lightning port and the first usb port, to the left of the left fan.

Block Image

This capacitor looks like it leaked open, judging by the discoloration of the leads. This is found on the top right of the left fan. There appears to be some bulging as well, though I am not really knowledgeable enough to say whether it has damaged the run.

Block Image

This one the metal bracket covering the connector snapped off. It is on the bottom left of the left fan.

Any idea what each of these are?

Answered! View the answer I have this problem too

Is this a good question?

Score 0

Comments:

@cmkinusn to identify the components will not be a problem. I have problem figuring out which ones you are looking for. Any chance you can use a graphics editor and may add some sort of arrow etc? Remember I am old and my vision is really getting lousy (lousier). what 820-XXXX is your board?

by

Add a comment

1 Answer

Chosen Solution

@cmkinusn lets see if this will at least get you started. This is just to identify the components, not to diagnose your board. BTW. most of this looks like water damage and corrosion. The cap is not leaking (it is not an electrolytic cap) but corroded

Block Image

Reference designator L4610 is a DLP11S inductor 90 ohm 100MA

Block Image

Reference designator C7526 is a 10UF 16V 10% capacitor in a 0805 package.

Block Image

I am not sure about the third component you describe. I attached an image of what I think you may be referring to, but it is on your Magsafe DC board. Looks corroded and may be better to replace the board. Cost of it is around $15USD. You may need to repost an image to identify which component you are looking for.

Was this answer helpful?

Score 2

Comments:

This is really helpful, thank you! Also, good news to hear that the board itself is replaceable for the connector, 15 dollars is reasonable.

I'm guessing by your comment of identifying and not diagnosing that you suspect the damage to be more pervasive than just the two broken components I found?

by

@cmkinusn that is a big depends. Once you replace those components you'll need to recheck to make sure there are no other issues.

by

@oldturkey03 Any useful advice on checking the board without actually turning the computer on? I would rather not fry the new components if the issue is deeper. I've never been that great at diagnosing boards, honestly, all I am really capable of is some limited process of elimination for broken components.

by

You can with a multimeter in ohm mode etc. but it will be difficult since both of your components are from separate circuits. At this time I'd replace the magsafe board and the two components and give it a try. Since the board does show some corrosion you do want to consider having it either professionally cleaned with an ultrasonic cleaner or use 90%+ isopropyl alcohol and a soft brush to clean it yourself, before doing the repair. For further help, send me an email. My address is on my about page. Click on my avatar for that

by

Add a comment

Add your answer

Chris Knight will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 1

Past 30 Days: 4

All Time: 68