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Lardman
 Post subject: Re: Broken PCB
PostPosted: August 24th, 2021, 9:38 
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northwind wrote:
I'm not at the office, but this drive is an Apollo, and unless my memory proves me wrong, they have unique 4F module so rebuilding the "ROM" is extremely difficult/unlikely.
I've not had one in yet to play with you're normally right :lol: Time under the scope it is then.

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pepe
 Post subject: Re: Broken PCB
PostPosted: August 24th, 2021, 11:48 
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Joined: October 3rd, 2005, 0:40
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It is Apollo, but i doubt it is subject to the same issue Firebird/FBlite/Hubblexx has. Even it is, it can be done, the question is what the original issue was with the drive...

pepe

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peterspie
 Post subject: Re: Broken PCB
PostPosted: August 24th, 2021, 16:23 
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Joined: August 18th, 2021, 15:55
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Location: Purmerend, Netherlands
The HDD is a WD40EFRX.

The issue with the drive was a wrong power cable. Blow the diodes/fuses, and the repair guy decided to desolder the bios chip instead of the diodes.

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pepe
 Post subject: Re: Broken PCB
PostPosted: August 24th, 2021, 16:46 
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Joined: October 3rd, 2005, 0:40
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if the fuses are blown preamp is probably gone as well...
needs mha replacement in that case, not DIY.

pepe

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fzabkar
 Post subject: Re: Broken PCB
PostPosted: August 24th, 2021, 17:03 
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pepe wrote:
if the fuses are blown preamp is probably gone as well...

Preamp damage is much less likely with this particular PCB. It's not affected by the old D3/R67 design stupidity.

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pepe
 Post subject: Re: Broken PCB
PostPosted: August 25th, 2021, 7:10 
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fzabkar wrote:
Preamp damage is much less likely with this particular PCB. It's not affected by the old D3/R67 design stupidity.


Thx for clarifying, yes, i haven't checked this actual pcb, just suspected the same design flaw all older pcbs had :)

I can help if you can send the drive over, or contact Marc:http://forum.hddguru.com/memberlist.php?mode=viewprofile&u=5963 , he is in Belgium, a bit closer...
(not sure if distance makes a huge difference though)

pepe

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