F/U # N to my MacBook with spilled water

[space-time]

before I even start, big THANKS to all people who replied to previous threads. I got very useful advice (as usual)


I mentioned the problem several times. Quick update: replacement machine is on the way, but I would still like to see if I can salvage/fix the old one. all data is safe.

It turns out it will boot on Battery but it will not charge. AC adapter is good, I have tested it on other MacBooks, and I also tried other good adapters. I managed to charge the battery and run the machine a little longer, all appears to work normal except sound which seems to be only one speaker but I am not 100% sure that I plugged in the speaker wires correctly (or it may have been damaged by the guy who butchered it).

Today I received a replacement (USED) MagSafe Board from PowerBook Medic ($9 shipped) and I tested it and MacBook still does not charge. It says AC Adapter not connected. That leaves the logic board as the other main suspect.

I took the logic board out again. Smell test: negative. I can't identify any suspicious odor, and I think I have a sensitive nose when it comes to electronic failures.

I took high resolution photograph of the logic board which I would like to share with you. Perhaps you guy see something which I may have missed. I took these with a 50 mm and a Pentak K-01 at f/11 on a tripod. I could improve the lightning somewhat if necessary but I think this should be OK.

The images are about 7 MB each. Please don't click if you are on a cell phone or have a slow connection.

Please let me know if you see any damage.

Front of Logic Board https://dl.dropboxusercontent.com/u/1941...GP0909.JPG


Back of Logic Board https://dl.dropboxusercontent.com/u/1941...GP0910.JPG


Thanks

[eustacetilley]

Just a quick hint:

http://stores.homestead.com/conservemp/D...bok?no=622

These are some of the best tools for cleaning up suspect traces on circuit boards. Beware that the tiny fiberglass bristles will break off with wear, so blow the board down carefully after burnishing all the contacts, and _wear_ _safety_ _glasses_. Also, don't rub your eyes until you have thoroughly washed your hands.
I personally use an old Rush Eraser, a model no longer made.

I fixed an iBook 700 this way, back before the recalls.

Eustace

[space-time]

eustacetilley wrote:
Just a quick hint:

http://stores.homestead.com/conservemp/D...bok?no=622

These are some of the best tools for cleaning up suspect traces on circuit boards. Beware that the tiny fiberglass bristles will break off with wear, so blow the board down carefully after burnishing all the contacts, and _wear_ _safety_ _glasses_. Also, don't rub your eyes until you have thoroughly washed your hands.
I personally use an old Rush Eraser, a model no longer made.

I fixed an iBook 700 this way, back before the recalls.

Eustace

I am not sure that I want to spend more money on this. I would call it closed if I could see some damage. but as it is, I was not able to determine any trace of liquid or "spark" as were initially reported.

even if I get it powering again, the thing was taken apart 100% and I am not sure I know how to put it back. I will probably sell it for parts on ebay (except SSD) and disclose that it powers up on battery but doesn't take external power.

at this point to me it is more of a puzzle that I would like to solve just because I like a challenge, rather that because I need it running again.

[Carm]

Did you reset SMC Hold down for 50 seconds, NOT 5. Per another site from a Tech.
Did you reset NVRAM/PRAM

Did you make sure the magsafe port is clean and conductive.

[Carm]

The top left J6900 looks like it has a burned out pit. But thats just me.
I would go over it with a fine tooth comb and a large illuminated magnifying glass.

[space-time]

Carm wrote:
Did you reset SMC Hold down for 50 seconds, NOT 5. Per another site from a Tech.
Did you reset NVRAM/PRAM

Did you make sure the magsafe port is clean and conductive.

I didn't try 50 seconds, I tried ore like 10-15 I think

I did reset the PRAM, I think a few days ago I heard the sound during reset or PRAM, last night I tried to reset it again, it seemed to reset (computer restarted) but I didn't hear the sound.

Carm wrote:
The top left J6900 looks like it has a burned out pit. But thats just me.
I would go over it with a fine tooth comb and a large illuminated magnifying glass.

That's where the MagSafe plugs in into the logic board, I noticed that spot but I don't think it is burned. I will take it at work and look under a microscope

[JoeH]

Besides the possible burned spot, have you checked under the dark sheet of insulating(?) material for water damage?