SMC Issue on MBP 13 - Hardware Troubleshooting Guide

[drjoed]

Macbook air wake from sleep and more

Hello all. Just found this forum and thought I might be able to get some help with an odd problem on my mid-2012 Macbook air 13". I bought it with the 128 GB drive which I filled up pretty quick so I installed a Transcend 480 GB SSD which has worked well for over a year. I often use the computer with a 26" auxillary monitor and bluetooth keyboard and mouse. I keep the Magsafe adapter plugged in so that I can close the case and use only the larger screen. (Computer does not shut down with case closed while plugged in.) At night I move my mouse to the upper left corner where I have it set to start a screen saver. All was well until recently when the computer would not wake the next morning. I don't remember the specifics unfortunately but moving the mouse did nothing. Eventually I disconnected the aux. monitor and rebooted using the power button. I got the Apple logo and the progress bar which moved very slowly for a minute and then I got a gray screen with a circle and a line thru it ("stop"). No matter how many times I tried rebooting this is as far as I get. I have tried many suggestions online for restarting in different modes but none have gotten me to start up. I tried "safe mode" and although the computer appears to start in safe mode the keyboard is not functional (I cannot type any commands on the command line). Here is the interesting thing: when I put the original 128 GB drive back into the computer it starts just fine. And if I plug the 480 GB drive into the USB port and reboot the computer restarts with that drive as the primary and all my programs and documents are available!! I have tried putting drive this back into the case but no go: just get the gray screen with the "stop: sign. Any ideas? Would love to be able to get my 480 GB back into the case! Should I back it up and erase, then put it back in and restore? Would that be the easiest solution? Is there some way to get the computer to recognize my 480 GB drive without going thru this? And if I get this working again is it a bad idea to use the computer with an auxillary monitor and the case closed???
Joe

 

[bladerex]

Hello, the value are correct. Any other idea?

Have you tried SMC and PRAM reset?
See also do you have actual connection between r7020 and r7021, r7022
and between r7050 and r7051, r7052 and also try to measure the charging transistor Q7055 what voltage do you have on pin4 with discharged battery?

 

[dwqualia]

This one is working on my mac with wineskin:
laptopserviz.bg/media/wysiwyg/Allegro_Free_Physical_Viewer_15.7.zip

Whenever I try and open the .brd file I get this error message. I have tried using EAGLE on Mac, the Allegro Free Viewer using Wine on Mac, and the Allegro Free Viewer using a Windows machine, all saying the exact same error message.

What am I doing wrong?

EDIT: This is the file I am talking about https://www.dropbox.com/s/rx95jfpyhgopv4k/820-3115-B.brd

 

[dwqualia]

I've just discovered that simply clicking download results in a "corrupted" file, whereas right clicking and choosing save target as results in a working file.

 

[dwqualia]

I have them but 10x,
I minded do YOU have them but any way try to find "landrex boardview". it is somewhere in earlier treads. it works on windows but on mac you need wine.


Now do you have 3,3 v on R5704?
Is R5704 1,5 ohm?
Is R5703 220K?
Measure also R5714=470 ohm, R5715=10K.
What voltage do you have on them?
If everything is OK, than I think you will need to replace U5701.
I have seen it go bad many times after liquid damage on the keyboard.

Thank you bladerex, I have absolutely no experience with electronics but I was able to measure some resistance values.

R5703 - 99.4K
R5704 - 2.8
R5714 - NO READING
R5715 - 10K

I am not sure how to measure the voltage for R5704...

Does this point to any answers?

 

[illyrian]

Macbook Pro 13 2010 820-2879-B Burn Short on ISL 95638

Macbook Pro 13 2010 820-2879-B

Burn point on ISL 95638, change is not a Problem, but the solder points are the Problem...


Does anybody know how the Trace points are?

Please Help??

Thanks at all

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[Yako76]

Have you tried SMC and PRAM reset?
See also do you have actual connection between r7020 and r7021, r7022
and between r7050 and r7051, r7052 and also try to measure the charging transistor Q7055 what voltage do you have on pin4 with discharged battery?

I have 12,52v on Pin 4

 

[bladerex]

Macbook Pro 13 2010 820-2879-B

Burn point on ISL 95638, change is not a Problem, but the solder points are the Problem...


Does anybody know how the Trace points are?

Please Help??

Thanks at all

The missing pin (if it is a pin14) is PPBUS_G3H 12v. You can take it from the nearest capacitor.
But what is the cause of this?

 

[bladerex]

I have 12,52v on Pin 4

This mean's that charger chip doesn't charge how it must to. If it charge you will have 5V. on pin 4. That means that it have false readings for current flow.
It measures the current flow for charging thru R7050 and the current flow for the system thru R7020. When current flow for the system is to high it shuts down the Inrush Limiter.
Check your Vias from charging resistors to the chip itself for corrosion and the resistor values. If the chip itself go bad it won't charge at all and you say that it charges but very slowly.

----------

Thank you bladerex, I have absolutely no experience with electronics but I was able to measure some resistance values.

R5703 - 99.4K
R5704 - 2.8
R5714 - NO READING
R5715 - 10K

I am not sure how to measure the voltage for R5704...

Does this point to any answers?

And how you expect to repair it then?
You must be aware that Macs are one of the most complicated comp's.
Anyway R5714 must be 470 Ohm try to measure it one more time it it is not replace it.
It is for "Caps lock" but sometimes messes up the IC.

 

[praetorian909]

Hello all, I am also trying to troubleshoot a power and/or SMC issue for a friend. It's a unibody MacBook Pro mid-2010. Strange thing is the LED on the power adapter has a normal steady green LED (not faint or flickering) but the MacBook is unable to power on. Here's what I tried so far:

• Friend left MacBook plugged in over 24-48 hours
• SMC reset
• Unplug internal battery
• Swap RAM
• Disconnect HDD

Things I have yet to try: temporary bypass SMC (will try that soon), swap AC adapter (didn't have extra on me), swap battery (didn't have a spare but I can try to get one, no tri-wing screwdriver on hand).

I was hoping just the DC board was bad, but I'm skeptical since that has very few parts and the LED turns green. There was no liquid damage that I was able to see (but I'll ask again to make sure). Anything else I should try, or anything I should try to probe with a multimeter?

Any help would be greatly appreciated!

 

[millereffect]

sleep problem, mbp 2010

Hi folks,
I am trying to fix the sleep problem of a mbp 2010 13" which had a liquid spill. I could find the residual dried fluid in the regions of the interface connectors (USB, SD card, headphone, bil, keyboard) and the SMC. I could fix damaged copper traces and replaced some smd parts and the machine is running now again.

But it keeps steady running only in the bypass SMC mode. If I boot it normally it loads OSX and runs for about 10-20 seconds and then it suddenly runs into the sleep mode with the sleep LED flashing. There is no way to get it out again with pushing a key, trackpad or power button. I have to unplug/plug the battery or power cable again to get it restarted.

I was also running a hardware test without any issues found.

I am assuming the SMC gets a wrong input signal which enforces the sleep but I have no clue from where it comes. I probed the lid_closed signal from the bil connector but that's pulled high. There are still some caps around the bil connector which I havent replaced yet. I doubt they cause it.

I also replaced the battery indicator-sleep sensor cable. I replaced the trackpad temporarely. No change.

I cannot see any other faulty part wich could cause this.

Now my question: Does anybody know which signals I should also check to debug the issue successfully (SD, headphone....)?

I am afraid there is a trace on the inner pcb layers which is broken. But this won't be easy to figure out. Especially if it is difficult to proble the signal close to the SMC because there are no many test points.

I would be happy if anybody has an idea or was running into similare issue and has more experience with this than me.

Many thanks!!!

 

[illyrian]

The missing pin (if it is a pin14) is PPBUS_G3H 12v. You can take it from the nearest capacitor.
But what is the cause of this?

Ok thanks now i have clean the Board and desolder the QFN IC.

That looks pretty bad? Can i repair this? 2 Pins are missing.

 

[Yako76]

This mean's that charger chip doesn't charge how it must to. If it charge you will have 5V. on pin 4. That means that it have false readings for current flow.
It measures the current flow for charging thru R7050 and the current flow for the system thru R7020. When current flow for the system is to high it shuts down the Inrush Limiter.
Check your Vias from charging resistors to the chip itself for corrosion and the resistor values. If the chip itself go bad it won't charge at all and you say that it charges but very slowly.

----------



And how you expect to repair it then?
You must be aware that Macs are one of the most complicated comp's.
Anyway R5714 must be 470 Ohm try to measure it one more time it it is not replace it.
It is for "Caps lock" but sometimes messes up the IC.

Dear Bladerex,

I checked the Vias and it sims to be all ok.

I have 9,15v jumping to 12,51v on follows point (battery is unplugged)

Pin 4 of Q7055
Pin 1 of C7026
Pin 16 of U7000

and on Probe 210

what do you mean? Is the U700o may be bad?

Thanks a lot!!!!

 

[funtotos]

no power 820 3115-B

Hey,
I have a macbook pro 13 820 3115-B won't start.
Spilled liquid all cleaned off OK
It does charge the battery and have a solid green light.
Where is 3.42v at G3Hot power pad ?With keyboard no fan, no chime, no video , no signs of life at all. Anybody have the same problem that I have want to share where the problem is.

i have bordview and shematic
I do really appreciates you guys input.
thanks

 

[ajiebali]

Hi All,
i Have 820-2879B wont charging and wont turn on.
Only turn On when i bypass SMC and battery connected.
is it anyone have same problem or anyone have solutions for that?
many thanks

 

[ajiebali]

Hi All,
i Have 820-2879B wont charging and wont turn on.
Only turn On when i bypass SMC and battery connected.
is it anyone have same problem or anyone have solutions for that?
many thanks

Update:
After i change the ISL6259AHRTZ Now can turn on if magsafe connected. but still won't turn on with battery.

is this happens because i replace different ISL?
i got ISL from another broken Logicboard, with different model i think.
original ISL6259AHRTZ[F06MG] and then i put ISL6259AHRTZ[F035XR]
Any Advice for me please?

 

[fega72]

Update:
After i change the ISL6259AHRTZ Now can turn on if magsafe connected. but still won't turn on with battery.

is this happens because i replace different ISL?
i got ISL from another broken Logicboard, with different model i think.
original ISL6259AHRTZ[F06MG] and then i put ISL6259AHRTZ[F035XR]
Any Advice for me please?

Hi!
Do you have orange/green light on the magsafe connector?

(I think the 2 ISLs are the same)

 

[ajiebali]

Hi!
Do you have orange/green light on the magsafe connector?

(I think the 2 ISLs are the same)

hi brother thanks for your reply.
before i replace the isl, magsafe was off. and after i replace with another isl, the magsafe goes green. not orange at all even i put battery on

 

[fega72]

Update:
After i change the ISL6259AHRTZ Now can turn on if magsafe connected. but still won't turn on with battery.

is this happens because i replace different ISL?
i got ISL from another broken Logicboard, with different model i think.
original ISL6259AHRTZ[F06MG] and then i put ISL6259AHRTZ[F035XR]
Any Advice for me please?

hi brother thanks for your reply.
before i replace the isl, magsafe was off. and after i replace with another isl, the magsafe goes green. not orange at all even i put battery on

Check Q7055, R7050 and fuse near the battery connector.

 

[ajiebali]

Check Q7055, R7050 and fuse near the battery connector.

I will do it Brother, hope is working. Thanks For your help

 

[ajiebali]

Check Q7055, R7050 and fuse near the battery connector.

already replace Q7055, R7050, and Fuse but still same. magsafe just green light and wont turn on with battery.
any other advise brother?

 

[fega72]

already replace Q7055, R7050, and Fuse but still same. magsafe just green light and wont turn on with battery.
any other advise brother?

Are you sure the battery is a good one?

 

[ajiebali]

Are you sure the battery is a good one?

Pretty sure 100% good and i have 2 battery for testing.

 

[ajiebali]

already replace Q7055, R7050, and Fuse but still same. magsafe just green light and wont turn on with battery.
any other advise brother?

Are you sure the battery is a good one?

And Battery light indicator button on the life side isn't working also.

 

[fega72]

And Battery light indicator button on the life side isn't working also.

Do you have any voltage on the LB battery connector without the charger?
Also try with disconnected battery indicator.