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TerraNova
 Post subject: WD mybook WD80EZAZ-11TDBA0 no power masked ROM?
PostPosted: September 9th, 2019, 3:58 
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Joined: August 8th, 2007, 6:32
Posts: 1241
Location: inside ROM
I have a WD mybook WD80EZAZ-11TDBA0 it has no power,is the rom now masked to main processor? I have cover the 3.3V pin hoping it will work but it doesnt work. in PC3000 12V rail line error, 5V line is ok.

There is a HX marking components which was damage, probably fuse?

Any help much appreciated.


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mr_spokk
 Post subject: Re: WD mybook WD80EZAZ-11TDBA0 no power masked ROM?
PostPosted: September 9th, 2019, 4:10 
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Joined: May 21st, 2007, 16:10
Posts: 1592
Location: Gothenburg/ Sweden
Is not the ROM where I marked in red?


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fzabkar
 Post subject: Re: WD mybook WD80EZAZ-11TDBA0 no power masked ROM?
PostPosted: September 9th, 2019, 5:06 
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Joined: September 8th, 2009, 18:21
Posts: 17339
Location: Australia
Check the 12V TVS diode and its associated fuse.


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fzabkar
 Post subject: Re: WD mybook WD80EZAZ-11TDBA0 no power masked ROM?
PostPosted: September 9th, 2019, 5:17 
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Joined: September 8th, 2009, 18:21
Posts: 17339
Location: Australia
mr_spokk wrote:
Is not the ROM where I marked in red?

Yes.

http://www.hddoracle.com/viewtopic.php?f=21&t=2549&p=20305#p20305

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TerraNova
 Post subject: Re: WD mybook WD80EZAZ-11TDBA0 no power masked ROM?
PostPosted: September 9th, 2019, 7:40 
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Joined: August 8th, 2007, 6:32
Posts: 1241
Location: inside ROM
Thank you Guys, will check it out
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fzabkar
 Post subject: Re: WD mybook WD80EZAZ-11TDBA0 no power masked ROM?
PostPosted: September 9th, 2019, 16:18 
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Joined: September 8th, 2009, 18:21
Posts: 17339
Location: Australia
Please do tell us how you go replacing the diode and fuse. It should be a 5-minute job.

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TerraNova
 Post subject: Re: WD mybook WD80EZAZ-11TDBA0 no power masked ROM?
PostPosted: September 9th, 2019, 21:32 
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Joined: August 8th, 2007, 6:32
Posts: 1241
Location: inside ROM
Done, replaced 12V TVS and a fuse, luckily the HDA is still ok. thanks again for your help Spokk & Fzabkar
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