www.deadharddrive.com

Eric Lee · Posted: Fri Oct 29, 2010 11:14 am Post subject:

Hi, For this PCB, there are two kinds of them, pls contact my hotmail to see if I can help or not.

Thanks
Eric
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HK MingDi electronics Co., Ltd. http://www.hkmingdi.com/enindex.asp
MSN/E-mail：eric_lee8341@hotmail.com
Specialize in HDD PCB!!! Real in stock!!
Skype：eric.lee1984

dadafu · Active contributor Joined: 18 Oct 2010 Posts: 7

sunnydreamspace · Deadharddrive regular +5 Joined: 04 Jan 2009 Posts: 540

huggy · Deadharddrive regular Joined: 12 Sep 2013 Posts: 16

Hi everybody,

does anybody has made some business with this guy below and what was the result ? Is he serious ?

Thanks for a quick reply.

Huggy

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Eric Lee
Deadharddrive regular +4

Joined: 26 Apr 2009
Posts: 308
Location: China

HK MingDi electronics Co., Ltd. http://www.hkmingdi.com/enindex.asp
MSN/E-mail：eric_lee8341@hotmail.com
Specialize in HDD PCB!!! Real in stock!!
Skype：eric.lee1984

huggy · Deadharddrive regular Joined: 12 Sep 2013 Posts: 16

Hi everybody,

I'm looking for a clone for my dead Hitachi HDD - REF : HDT721010SLA360 (Date Code : Aug-2009 - P/N : 0A37993 - S/N : MS0ZZ3YK - MLC : BA3013).

Suddenly, something has happened on the PC startup and now, this HDD is not recognized by the Bios.

The power supply is Ok on several point of the PCB but nothing happen (no noise, no motor vibrations...).

I understood that i have to exchange the U5 NVRAM from my hard disk to the clone. I'm engineer in electronics so I think i can do it myself.

BUT, unfortunately, after many (night) hours, I haven't found any exact complete clone HDD. Sometimes, it's the good PCB reference but not the good HDD reference and sometimes it's the good HDD reference but not the correct PCB sticker.

So, my question is : Is it really necessary to find the complete reference of my complete harddrive or just a clone compliant PCB (same Sticker reference = 0A29987 BA3263 _ MzK929 06V1).

For the last part of the reference, it seems not necessary to have the exact one.

An other point : I don't remember if i have uploaded a firmware update on this HDD (I don't know exactly if it's possible). Is it a problem or not ?

Please, fell free to contact me for an help, answer, indication.

Thank you for your Help.

Best regards.

huggy · Deadharddrive regular Joined: 12 Sep 2013 Posts: 16

Hi everybody,

I'm looking for a clone drive or PCB for my dead Hitachi HDD - REF : HDT721010SLA360 (Date Code : Aug-2009 - P/N : 0A37993 - S/N : MS0ZZ3YK - MLC : BA3013).
PCB Sticker = 0A29987 BA3263 _ MzK929 06V1

Suddenly, something has happened on the PC startup and now, this HDD is not recognized by the Bios.

The different power supply seem Ok on several points of the PCB but nothing happen (no noise, no motor vibrations...).

I have understood that i have to exchange the U5 NVRAM from my hard disk to the clone. I'm engineer in electronics so I think i can do it myself.

BUT, unfortunately, after many (night) hours, I haven't found any exact complete clone HDD. Sometimes, it's the good PCB reference but not the good HDD reference and sometimes it's the good HDD reference but not the correct PCB sticker.

So, my question is : Is it really necessary to find the complete reference of my complete harddrive or just a clone compliant PCB (same Sticker reference = 0A29987 BA3263 _ MzK929 06V1).

For the last part of the PCB reference, it seems not necessary to have the exact one. But for the first part, is it necessary to have the exact one if i change U5 and U7 to my clone ?

Please, fell free to contact me for an help, answer, indication.

Thank you for your Help.

Best regards.

huggy · Deadharddrive regular Joined: 12 Sep 2013 Posts: 16

Hi everybody,

I'm looking for a clone drive or PCB for my dead Hitachi HDD - REF : HDT721010SLA360 (Date Code : Aug-2009 - P/N : 0A37993 - S/N : MS0ZZ3YK - MLC : BA3013).
PCB Sticker = 0A29987 BA3263 _ MzK929 06V1

Suddenly, something has happened on the PC startup and now, this HDD is not recognized by the Bios.

The different power supply seem Ok on several points of the PCB but nothing happen (no noise, no motor vibrations...).

I have understood that i have to exchange the U5 NVRAM from my hard disk to the clone. I'm engineer in electronics so I think i can do it myself.

BUT, unfortunately, after many (night) hours, I haven't found any exact complete clone HDD. Sometimes, it's the good PCB reference but not the good HDD reference and sometimes it's the good HDD reference but not the correct PCB sticker.

So, my question is : Is it really necessary to find the complete reference of my complete harddrive or just a clone compliant PCB (same Sticker reference = 0A29987 BA3263 _ MzK929 06V1).

For the last part of the PCB reference, it seems not necessary to have the exact one. But for the first part, is it necessary to have the exact one if i change U5 and U7 to my clone ?

Please, fell free to contact me for an help, answer, indication.

Thank you for your Help.

Best regards.

huggy · Deadharddrive regular Joined: 12 Sep 2013 Posts: 16

Hi,

i have a really good new : my hard disk is repared.

After long (night) researchs, i have found a hard disk that matches exactly with mine.

After changing the NVRAM, I've got access to my hard drive.

!!!!!!!!!! THANKS TO EVERYBODY FOR YOUR HELP !!!!!!!!!!

salvationdata · Deadharddrive regular Joined: 25 May 2011 Posts: 18

Here is an article for hitachi pcb swap

http://www.hddzone.com/conditions.html

If you still have any questions please contact them.

kuwona · Posted once Joined: 07 Mar 2016 Posts: 1

Hi All -

Hope it's okay to resurrect this old thread. I have a HDT721010SLA360 that started clicking and won't mount. I read fzabkar's post below and used a multimeter to measure across the two suspected diodes.

Here's a link to the the readings from the multimeter:

https://www.dropbox.com/sh/g2znh2xsijmtyjb/AABGaTj06V_OdFrtP99yTy1za?dl=0

Can anyone help me determine from these images if one of my diodes is bad?

Thanks!
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