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 Post subject: Seagate Momentus 5400.2
PostPosted: March 28th, 2012, 4:55 
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Joined: March 28th, 2012, 3:36
Posts: 2
Location: bucharest
Ok, so i have this hard-drive that won't spin up.

Seagate Momentus 5400.2
model: st98823as
sn: 5pk341qf
PCB: 100397877 Rev B

The problem seems to be a fried smd near the sata power connector.
The smd has a stripe on one side, and "KEU" marking, with a small dot under the "U", but i don't know if it's a capacitor or a diode.
Can anyone tell me what "KEU" means? Couldn't find anything on SMD Marking Codes pdf found on google.

Regards


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 Post subject: Re: Seagate Momentus 5400.2
PostPosted: April 2nd, 2012, 15:35 
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Joined: October 1st, 2005, 14:31
Posts: 33
Upload a pic.

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 Post subject: Re: Seagate Momentus 5400.2
PostPosted: April 3rd, 2012, 4:35 
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Joined: September 8th, 2009, 18:21
Posts: 16955
Location: Australia
"KE" is the marking code for a 5V TVS diode. If it's shorted, and if it's connected between the +5V supply and ground, then remove it.

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 Post subject: Re: Seagate Momentus 5400.2
PostPosted: April 3rd, 2012, 4:50 
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Joined: August 15th, 2006, 3:01
Posts: 3522
Location: CDRLabs @ Chandigarh [ India ]
andreidumitrescu wrote:
Ok, so i have this hard-drive that won't spin up.

Seagate Momentus 5400.2
model: st98823as
sn: 5pk341qf
PCB: 100397877 Rev B

The problem seems to be a fried smd near the sata power connector.
The smd has a stripe on one side, and "KEU" marking, with a small dot under the "U", but i don't know if it's a capacitor or a diode.
Can anyone tell me what "KEU" means? Couldn't find anything on SMD Marking Codes pdf found on google.

Regards


Well,
Upload a PIC and Do You Have A Soldering Iron ? Also Do You Know How To USe It :mrgreen:

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Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
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Website-> http://www.chandigarhdatarecovery.com


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 Post subject: Re: Seagate Momentus 5400.2
PostPosted: April 3rd, 2012, 14:59 
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Joined: March 28th, 2012, 3:36
Posts: 2
Location: bucharest
Thaks for reply! In the meantime i found out that, indeed, it's a 5V TVS diode.
I removed it so i was able to backup all the data.
Being hard to find such a diode i left the hdd without it....

all the best


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