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 05-11-2020, 07:25 PM   #1
tintin007
New Member
 
Join Date: May 2020
City & State: wellington
My Country: nz
Line Voltage: 240vac 50hz
I'm a: Knowledge Seeker
Posts: 11
Default MacBook Pro A1278

Hi,

I have the right boardview and schematics from this site, Pretty sure i have a sensor issue. Could someone share the ASD 3s155 with me so i can run the tests ?? Prefer .rar format. Cheers
tintin007 is offline   Reply With Quote
Old 05-12-2020, 03:12 AM   #2
Stratos
New Member
 
Join Date: Sep 2015
City & State: Chania Crete
My Country: Greece
I'm a: Knowledge Seeker
Posts: 12
Default Re: MacBook Pro A1278

hello,what symptoms you have?loud fan and slow cpu speed?
Stratos is offline   Reply With Quote
Old 05-12-2020, 03:37 AM   #3
tintin007
New Member
 
Join Date: May 2020
City & State: wellington
My Country: nz
Line Voltage: 240vac 50hz
I'm a: Knowledge Seeker
Posts: 11
Default Re: MacBook Pro A1278

yes pretty much that. loud fan, very sluggish, kernel task 200+%, took a long long time to re install OS
tintin007 is offline   Reply With Quote
Old 05-12-2020, 04:06 AM   #4
Stratos
New Member
 
Join Date: Sep 2015
City & State: Chania Crete
My Country: Greece
I'm a: Knowledge Seeker
Posts: 12
Default Re: MacBook Pro A1278

i have in the pass the same on macbook pro 13 mid 2010.
before look for problem on hardaware you must know this is what macbook pro do in some cases without battery.
your battery is ok?
Stratos is offline   Reply With Quote
Old 05-12-2020, 04:12 AM   #5
Stratos
New Member
 
Join Date: Sep 2015
City & State: Chania Crete
My Country: Greece
I'm a: Knowledge Seeker
Posts: 12
Default Re: MacBook Pro A1278

my macbook under this conditions took 24 hours to instal os!
try this https://www.youtube.com/watch?v=N5o1-7OuO8A
if you have problem to delete the file you do this https://www.youtube.com/watch?v=_YmcjqkpI4A&t=44s

Last edited by Stratos; 05-12-2020 at 04:15 AM..
Stratos is offline   Reply With Quote
Old 05-12-2020, 04:38 AM   #6
tintin007
New Member
 
Join Date: May 2020
City & State: wellington
My Country: nz
Line Voltage: 240vac 50hz
I'm a: Knowledge Seeker
Posts: 11
Default Re: MacBook Pro A1278

Hi Stratos, Battery is ok. charges up to full capacity, according to display. using mac charger and led changes from amber to green. I tried the other you tube fix before posting, It didn't make any difference at all. Hence why i think its a hardware issue. Its a mid 2012 from what i understand
tintin007 is offline   Reply With Quote
Old 05-16-2020, 07:15 AM   #7
luckydip
Member
 
Join Date: Aug 2016
City & State: uk
My Country: uk
I'm a: Knowledge Seeker
Posts: 63
Default Re: MacBook Pro A1278

A couple of things to check:

see if removing the webcam cable makes any difference - clean/check soldering on connector

check around the SMC for corrosion

remove battery level indicator cable and test

check trackpad cable/connector for corrosion
luckydip is offline   Reply With Quote
Old 06-01-2020, 03:14 PM   #8
tintin007
New Member
 
Join Date: May 2020
City & State: wellington
My Country: nz
Line Voltage: 240vac 50hz
I'm a: Knowledge Seeker
Posts: 11
Default Re: MacBook Pro A1278

Hi,

I have a resolution. I found some corrosion on pin 2 of r5054, Replaced r5054 as it was open. also cleaned corrosion around pin 2. Macbook now runs happily. Looks like this goes to a bi line on the CPU_PECI. Cheers for your advice
tintin007 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 - 2020
Powered by vBulletin ®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 12:47 PM.
Did you find this forum helpful?