Badcaps.net Forum
Go Back   Badcaps Forums > Troubleshooting Hardware & Devices and Electronics Theory > Troubleshooting Laptops, Portable, and Mobile Devices
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 05-22-2016, 12:51 PM   #1
iMic
Member
 
Join Date: Oct 2013
City & State: Adelaide, South Australia
My Country: Australia
Line Voltage: 240VAC 50Hz
I'm a: Knowledge Seeker
Posts: 27
Default MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

I've recently come across a MacBook Pro (17-inch Mid 2009) in almost pristine condition. The machine owes me nothing so far, but considering its condition, build quality and that incredible 17-inch screen I would like to see what can be done with it.

It didn't power on. The machine did start for a while, but only if I disconnected some auxiliary components to reduce the current draw on the Logic Board. The LED on the front illuminates for a second, then the machine clicks off. Sometimes it will make it half way through boot and then suddenly shut off. In the rare occasion the machine does make it to the desktop, usually after five or six attempts, it will generally stay running without issue. After a while the machine stopped starting up entirely no matter what I tried.

I tested the PM_SLP_S4_L line which is a common failure on these boards and found it was reading at 0.3v, much too low to start the system. I replaced the 330uF 2.5v Poly-Tant capacitor at position C7771 with a Poly-Film capacitor, and with some creative component placement, this resolved the problem. The rail now comes up to 1.1v and the machine powers on.



However it doesn't complete POST. The front sleep LED comes on, the fans spin, the HDD receives power and that's about it. Removing the memory modules results in no change, no memory beeps. The board did work previously, albeit intermittently, which makes me think something went awry in the process of replacing the capacitor.

I would like to probe around the board further and see what went wrong, but I wouldn't know where to start. I have seen some online sources offering schematics (SCHEMATIC,Folsten_MBP17) and board views for the 820-2610 series of boards, but I thought I would ask here first. This board has always been a great resource for hobbyist electronics repairers and if someone does have it, it saves me having to share my credit card details with some rather sketchy websites.


Cheers in advance.

~ iMic.

Last edited by iMic; 05-22-2016 at 12:55 PM..
iMic is offline   Reply With Quote
Old 05-23-2016, 07:51 AM   #2
keeney123
Lauren
 
Join Date: Sep 2014
City & State: North Adams MA
My Country: United States
Line Voltage: 120VAC, 60Hz
I'm a: Knowledge Seeker
Posts: 2,092
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

I think some people have had problems with BIOS that was corrupt that caused such issues.
keeney123 is offline   Reply With Quote
Old 05-23-2016, 08:05 AM   #3
polytek
Badcaps Veteran
 
Join Date: Dec 2013
City & State: tunisia
My Country: TUNISIA
Line Voltage: 230V/50Hz
I'm a: Professional Tech
Posts: 478
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

it's a good job what are you doing, thanks for sharing your experience friend.
polytek is offline   Reply With Quote
Old 05-23-2016, 10:17 PM   #4
iMic
Member
 
Join Date: Oct 2013
City & State: Adelaide, South Australia
My Country: Australia
Line Voltage: 240VAC 50Hz
I'm a: Knowledge Seeker
Posts: 27
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

Started the machine yesterday afternoon and she ticked over without a hitch.



I have seen issues before where the alcohol cleaning solvent hadn't fully evaporated from the board causing some anomalies, so I wonder if that was the case here. Been running for about 9 hours stable now including an Apple Service Diagnostic EFI / OS stress test, so it now looks rather promising for this board.


Quote:
Originally Posted by keeney123 View Post
I think some people have had problems with BIOS that was corrupt that caused such issues.
I have heard these machines can have some issues with the EFI ROM / BIOS. The chip in question is directly opposite the C7771 capacitor on the opposite side of the board, so sometimes heating the ROM chip can make the board appear to work again - in reality it's the heating of the adjacent capacitor that causes the board to start up.

Still, something to keep in mind if I continue to have issues with it down the track.

Last edited by iMic; 05-23-2016 at 10:19 PM..
iMic is offline   Reply With Quote
Old 06-07-2016, 08:48 PM   #5
iMic
Member
 
Join Date: Oct 2013
City & State: Adelaide, South Australia
My Country: Australia
Line Voltage: 240VAC 50Hz
I'm a: Knowledge Seeker
Posts: 27
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

Eventually did manage to track down the necessary schematics and board view files for this model. I've attached them here in case we want to add them to the collective community archive of notebook schematics.
Attached Files
File Type: zip 820-2610.zip (2.48 MB, 1099 views)
iMic is offline   Reply With Quote
Old 06-18-2016, 02:26 AM   #6
inflex
Badcaps Veteran
 
Join Date: Aug 2012
City & State: Townsville, QLD
My Country: Australia
I'm a: Professional Tech
Posts: 344
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

Quote:
Originally Posted by iMic View Post
Eventually did manage to track down the necessary schematics and board view files for this model. I've attached them here in case we want to add them to the collective community archive of notebook schematics.
Thanks for the BV files. Adding them to my collection. Have been working on modifying the OpenBoardView program on linux the last couple of days to add more features/usability.
__________________
YouTube Repair Videos - https://www.youtube.com/user/19PLD73
FlexBV BoardView software - Linux/OSX/Windows - http://pldaniels.com/flexbv
inflex is offline   Reply With Quote
Old 06-18-2016, 06:18 PM   #7
2andrewd
Member
 
Join Date: Mar 2012
City & State: wa
My Country: us
I'm a: Knowledge Seeker
Posts: 39
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

https://www.youtube.com/user/rossmanngroup/videos

This man is a genius when it comes to mbp mobo repair. Amazing channel! Definitely take a peek.
2andrewd is offline   Reply With Quote
Old 06-18-2016, 06:28 PM   #8
inflex
Badcaps Veteran
 
Join Date: Aug 2012
City & State: Townsville, QLD
My Country: Australia
I'm a: Professional Tech
Posts: 344
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

Quote:
Originally Posted by 2andrewd View Post
https://www.youtube.com/user/rossmanngroup/videos

This man is a genius when it comes to mbp mobo repair. Amazing channel! Definitely take a peek.
What I really enjoy about his videos is the entertainment value as well. Sure, there's a few things on the technical/purity-side that aren't quite correct but really the guy is fantastic. I'm already subscribed from last week and I see he's just clocked over 150,000. It was only about 24 hours ago I watched the video doing the very repair that was done here (regarding the poor cap issue).
inflex is offline   Reply With Quote
Old 06-20-2016, 03:43 AM   #9
mmartell
Badcaps Veteran
 
Join Date: Oct 2013
City & State: Windsor ON
My Country: Canada
I'm a: Knowledge Seeker
Posts: 2,749
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

Just saw a vid of his about reballing and reflowing. Said reflowing is bullshit because it's the chip not the solder balls and explained if you heat it without melting the balls the chip will work again. Seems he forgot about thermal expansion.
mmartell is offline   Reply With Quote
Old 06-20-2016, 10:59 AM   #10
iMic
Member
 
Join Date: Oct 2013
City & State: Adelaide, South Australia
My Country: Australia
Line Voltage: 240VAC 50Hz
I'm a: Knowledge Seeker
Posts: 27
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

Quote:
Originally Posted by inflex View Post
Thanks for the BV files. Adding them to my collection. Have been working on modifying the OpenBoardView program on linux the last couple of days to add more features/usability.
Only recently managed to compile OpenBoardView on OS X. Still needs some refinement on an OS X host but it already works a lot better than Landrex Test Link does. Looking forward to seeing what can be done with it as new features are added.

Currently working on sourcing schematics and board views for other boards as well. Starting to build a reasonable collection of them so if you're after any others, throw me a board number (820-****) and I'll see if I can track it down. Probably better to PM as I'll receive an email notification, don't always get to check the forums for new posts consistently otherwise.

Last edited by iMic; 06-20-2016 at 11:07 AM..
iMic is offline   Reply With Quote
Old 10-18-2019, 08:28 AM   #11
siroos_tz
Member
 
Join Date: Feb 2014
City & State: Ahvaz
My Country: Iran
I'm a: Knowledge Seeker
Posts: 23
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

Thanks iMic for the BoardView and Schematic
siroos_tz is offline   Reply With Quote
Old 10-21-2019, 02:21 AM   #12
rediii
Member
 
Join Date: Mar 2018
City & State: nrw
My Country: germany
I'm a: Forum Junkie
Posts: 49
Default Re: MacBook Pro (17-inch Mid 2009) 820-2610 MLB Repair

Quote:
Originally Posted by iMic View Post
Eventually did manage to track down the necessary schematics and board view files for this model. I've attached them here in case we want to add them to the collective community archive of notebook schematics.
thanks man!
rediii is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Badcaps.net Technical Forums 2003 - 2019
Powered by vBulletin ®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 05:56 AM.
Did you find this forum helpful?