All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: 5K1000-750 HDD in MacBook extremly slow
PostPosted: February 7th, 2019, 12:10 
Offline

Joined: February 7th, 2019, 11:38
Posts: 2
Location: Vienna / Austria
Got a 5 year old MacBook to 'repair'. Login or any start of a programm last
minutes, but there is never an error message shown. Not to many startups
set in the system startup, simply the beast takes for ever, whatever you
would start. But scrolling in an existing window is fast as ever before. So
apparently no CPU fault.

Opened the old MacBook and removed the HDD 5K1000-750
It's by http://www.hgst.com, a Wester Digital company.

Connected the HDD via an USB t SATA adapter to a new and working MacBook.
The noname adapter comes with a +12 volt power supply (?) Copied most of
the user data from the HDD 5K1000-750 to another external HDD that was
connected to the new MacBook. Transfer ran with no delay, absolutely that
what one expects on speed for such a job.

So, I was sure, the MacBook must have some fault inside, because the HDD
works with the expected speed if it is connected to an external USB adapter.

The owner went with the re-assembled old MacBook to an Apple store and
called me: the salesman says, we know such kind of problem, some HDD
start to creep after several years of usage inside the MacBook, but they are
OK on external adapters. He will replace the HDD (now a SSD) and all will be
fine. That's what they did.

- my question: did my extra +12 volt 'awake' the HDD, or is the + 12 volt just
for the electronis of the USB to SATA adapter? SATA has specs for +12 volt,
the 5K1000-750 is just referring to +5 volt int their specs.

- is it a extremly fragmented HDD and the USB to SATA adapter will handle that
much better/faster than the MacBook?

- what else can be the reason for such a fault ?

rgds


Top
 Profile  
 
 Post subject: Re: 5K1000-750 HDD in MacBook extremly slow
PostPosted: February 11th, 2019, 17:12 
Offline
User avatar

Joined: June 19th, 2018, 4:52
Posts: 30
Location: United Kingdom
most likely you got a Apple A1278 model. The hdd flex cables fail like crazy on them and it is an easy fix. When I say fail they either become unstable or very intermittent. Replacing the hdd cables fixes that known issue.


Top
 Profile  
 
 Post subject: Re: 5K1000-750 HDD in MacBook extremly slow
PostPosted: February 11th, 2019, 17:18 
Offline

Joined: May 21st, 2007, 16:10
Posts: 1548
Location: Gothenburg/ Sweden
nicoalbrecht wrote:
most likely you got a Apple A1278 model. The hdd flex cables fail like crazy on them and it is an easy fix. When I say fail they either become unstable or very intermittent. Replacing the hdd cables fixes that known issue.

+1 :good:

_________________
Rescue IT Datarecovery service Sweden
Rescue IT Dataräddning Göteborg AB
http://www.rescue-it.se


Top
 Profile  
 
 Post subject: Re: 5K1000-750 HDD in MacBook extremly slow
PostPosted: February 12th, 2019, 7:05 
Offline

Joined: February 7th, 2019, 11:38
Posts: 2
Location: Vienna / Austria
mr_spokk wrote:
nicoalbrecht wrote:
...Replacing the hdd cables fixes that known issue.

+1 :good:

Had no error messages / read errors etc. Just the machine got incredible slow.
Hacked for several hours ;-) without any messages, just any action was creeping.

rgds


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 29 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group