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 Post subject: How can I diagnose problems with heads?
PostPosted: April 4th, 2010, 15:10 
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Joined: February 15th, 2010, 23:14
Posts: 90
Hi All,

How can I know if the cause to the fault of the HDD is the heads?
Is there any symptoms for that?


Many Thanks!


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 Post subject: Re: How can I diagnose problems with heads?
PostPosted: April 4th, 2010, 15:22 
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Joined: October 21st, 2007, 8:48
Posts: 1221
CLICKING.


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 Post subject: Re: How can I diagnose problems with heads?
PostPosted: April 4th, 2010, 15:46 
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Joined: July 18th, 2006, 3:05
Posts: 7526
Location: ITALY
THE DRIVE DOESN'T WORK :D


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 Post subject: Re: How can I diagnose problems with heads?
PostPosted: April 4th, 2010, 16:14 
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Joined: October 23rd, 2006, 8:56
Posts: 1342
To get some scientific proof there are some expensive tools, with the proper tools and sufficient know how you can make some measurements. But if your not ready to dish out at least 10K, then you can go with less scientific solutions. But of course they are not 100%. As the gentlemen above already stated: clicking noise, the drive not being ready, etc...
can all possible be an indication that your heads are damaged. But like I said an indication, not 100% proof.

Best of luck to you!


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 Post subject: Re: How can I diagnose problems with heads?
PostPosted: April 4th, 2010, 23:54 
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Joined: October 21st, 2005, 0:45
Posts: 1505
Location: Mexico
By sounds, checking ATA register control´s, status control , Checking digital waveforms using special tools like DDA¨s , at some brands checking terminal log´s and interpreting status , using special tools or building u own tools, u will be able to editting head map and tried for that ,checking answers like Servo read , servo gate signal, etc until u get wich head its bad, for example over WD , checking visullay with microscope , checking internally preamplifier outputs in another words using u ears , hands, eyes, brain in conclusion with experience :D


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 Post subject: Re: How can I diagnose problems with heads?
PostPosted: April 5th, 2010, 2:51 
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Joined: June 27th, 2006, 11:33
Posts: 2318
Location: In ur HDD !
And if 1 head out of 2 is bad then you get bad sectors in the same pattern .
I mean to say that bad sectors also indicate bad heads .


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 Post subject: Re: How can I diagnose problems with heads?
PostPosted: April 5th, 2010, 4:28 
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Joined: July 18th, 2006, 3:05
Posts: 7526
Location: ITALY
I stuck with DDA... the only problem is that it costs like a car and you cannot go on it for a ride :D


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 Post subject: Re: How can I diagnose problems with heads?
PostPosted: April 5th, 2010, 6:35 
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Joined: February 15th, 2010, 23:14
Posts: 90
BlackST wrote:
I stuck with DDA... the only problem is that it costs like a car and you cannot go on it for a ride :D


:lol:

What is DDA?
What is the full name of it? and what actually can you do with that?


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 Post subject: Re: How can I diagnose problems with heads?
PostPosted: April 5th, 2010, 7:29 
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Joined: July 18th, 2006, 3:05
Posts: 7526
Location: ITALY
If you have >10'000 $ (10 thousand) ... to analyze digital signal.

Now don't ask what can you do with oscilloscope and multimeter. The answer is : repair your stereo (maybe).


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