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 Post subject: HGST problem
PostPosted: July 31st, 2018, 12:32 
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I have this HGST 541010A9E680. But its not working....I cannot hear it spins up. I have changed the PCB, but i see there is a small difference on the numbers on some of the chips. But the BIOS seems to be excact. When i swittched the PCB, it sounds like it spins up, i am not sure if there is som activity from the heads, but after a short time it spins down and acts like dead....
I have MRT ultra available, but not quite sure how to and where to start to get data from this disk. Any ideas?
I have other HGST, but different models, can i use these bodies if i swap platters and headers?


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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 13:06 
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jonbang wrote:
can i use these bodies if i swap platters and headers?

never ever


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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 14:07 
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jonbang wrote:
I have this HGST 541010A9E680. But its not working....I cannot hear it spins up. I have changed the PCB, but i see there is a small difference on the numbers on some of the chips. But the BIOS seems to be excact. When i swittched the PCB, it sounds like it spins up, i am not sure if there is som activity from the heads, but after a short time it spins down and acts like dead....
I have MRT ultra available, but not quite sure how to and where to start to get data from this disk. Any ideas?
I have other HGST, but different models, can i use these bodies if i swap platters and headers?


You are so far over your head here you're on the bottom of the ocean. Don't even consider any of what you're suggesting unless your intent is to make the data unrecoverable forever.

Unless you're ok with losing it forever, seek out professional recovery.

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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 14:50 
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Joined: November 29th, 2006, 10:08
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Location: UK
I have to agree, this sounds like a disaster waiting to happen :-(

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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 15:36 
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When you did replace the PCB did you ...

1) swap the ROM chips from the old PCB to the new one ?

2) properly match the PCB numbers on the sticker ?

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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 15:57 
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Can you upload detailed photos of your PCBs?

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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 16:25 
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Quote:
Spildit wrote:
When you did replace the PCB did you ...

1) swap the ROM chips from the old PCB to the new one ?

2) properly match the PCB numbers on the sticker ?




I did not swap the BIOS-rom. yet. i see they have different numbers. The PCB's itself has same numbers,


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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 16:53 
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By saying, "the same numbers" are you referring to the first and second line of the white sticker?

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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 17:01 
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jonbang wrote:
Quote:
Spildit wrote:
When you did replace the PCB did you ...

1) swap the ROM chips from the old PCB to the new one ?

2) properly match the PCB numbers on the sticker ?




I did not swap the BIOS-rom. yet. i see they have different numbers. The PCB's itself has same numbers,


The “ROM” MUST be swapped, it’s unique.

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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 17:15 
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This is ARM IBM native drive so this drive have ROM and NVRam (because it's newer ARM) on a single ROM chip and you do need to transfer this chip from the old non-working PCB to the new donnor PCB.

Also don't damage the chip.

If the code on the chip is damaged this might explain why the PCB is dead and you will be in for pain ...

I will tell you one thing, when i do have to test HGST drives that don't spin i do connect PCB only to firmware tool (HRT, SeDiv, etc) ... and i wait a little bit. If the PCB reports DRDY and DSC after a while in BSY i try to read NVRam by VSC. If it works there is a huge chance that PCB is OK and problem is elsewhere.

On your case because drive did spin with donor PCB i would say that either ROM code (or NVRam code) is damaged or PCB itself is gone....

Swapping PCB + ROM chip looks like a good move....

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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 17:15 
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Assuming of course that you will not damage the ROM chip ...

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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 17:22 
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fzabkar wrote:
Can you upload detailed photos of your PCBs?


Attachments:
File comment: Original PCB
IMG_20180731_223122.jpg
IMG_20180731_223122.jpg [ 1.88 MiB | Viewed 825 times ]
File comment: Original
IMG_20180731_223234.jpg
IMG_20180731_223234.jpg [ 2.76 MiB | Viewed 825 times ]
IMG_20180731_223104.jpg
IMG_20180731_223104.jpg [ 1.59 MiB | Viewed 825 times ]
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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 18:06 
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It seems something already happened to that poor pcb.

Can you clean all of it with a good amount of isopropyl alcohol, then take pics from the complete board, both sides ?


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 Post subject: Re: HGST problem
PostPosted: July 31st, 2018, 18:42 
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rogfanther wrote:
It seems something already happened to that poor pcb.

Can you clean all of it with a good amount of isopropyl alcohol, then take pics from the complete board, both sides ?


o, i'll try..But its the foam between the pcb and the disk..it was like that when i opend the pcb..But i can get pics tomorrow.


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 Post subject: Re: HGST problem
PostPosted: August 1st, 2018, 13:48 
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It looks to me that some clueless person tried moving all sorts of chips from one PCB to the other including things like the RAM and main IC.

This is hopeless. Go to a professional jonbang, you're just making this more and more complicated and running up the final cost you'll end up paying.

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 Post subject: Re: HGST problem
PostPosted: August 1st, 2018, 14:18 
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data-medics wrote:
It looks to me that some clueless person tried moving all sorts of chips from one PCB to the other including things like the RAM and main IC.

This is hopeless. Go to a professional jonbang, you're just making this more and more complicated and running up the final cost you'll end up paying.



Nobody has tried to move any chips. What you see is the foam between the pcb and the casing that has fastened to the pcb....:-)


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 Post subject: Re: HGST problem
PostPosted: August 1st, 2018, 14:51 
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Either the photos have very bad/poor quality or the PCB is completly messed up ...

MCU pads look full of dirt. RAM chip looks damaged + legs are shorted and full of dirt ...

Something is really wrong with this PCB ...

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 Post subject: Re: HGST problem
PostPosted: August 1st, 2018, 17:24 
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Are those flecks from foam debris, or does the SDRAM have a hole in it?

It would help to see the whole PCB (patient & donor), not just individual components.

There is a fuse at the SATA power connector. Is it open?

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 Post subject: Re: HGST problem
PostPosted: August 1st, 2018, 18:50 
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Joined: July 31st, 2018, 12:26
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fzabkar wrote:
Are those flecks from foam debris, or does the SDRAM have a hole in it?

It would help to see the whole PCB (patient & donor), not just individual components.

There is a fuse at the SATA power connector. Is it open?


its debris from foam. Where is that fuse located? How du i find it?


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 Post subject: Re: HGST problem
PostPosted: August 1st, 2018, 22:27 
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PCB protection devices:
http://www.hddoracle.com/viewtopic.php?f=100&t=1615

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