Hello! Need a HTS424040M9AT00 quick. Primarily for the PCB, first two lines are: 0A25357
DA1048C


if any other info is needed for a better pcb match let me know




also, drive is labeled May 05, made in Thailand, MLC:DA1091, P/N: 13G1132

What makes you think it's the PCB? Is it dead?

I have some 0A25357 DA1048B boards, which should work.

But you WILL have to transfer the NVRAM (either by reading out with PC3000/Salvation and re-writing to new PCB) or physically transferring the chip.

If the drive's clicking, then chances are it's the heads. Of which I have a suitable set too.

Where are you based? If in UK or willing to ship to UK, then I can help.

Cheers

Sean

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Drive does not power up at all; put my ear to it as it powers on, no sound. Not even 1 click (possible stiction).

yes, i'm aware of removing/soldering nvram, have good soldering station and experience.

Located in California, US. If anyone US based has a match please let me know, asap

Check the fuse "F1" with a continuity tester.

Top right on the PCB, holding it with IDE connector at the top.

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Fuse seems dead, no current will run through it.

Someone mentioned before I could bypass the fuse with wire/or a car fuse? this was with a desktop drive though, so I think a 2 amp car fuse might be too high to be effective and safe. Do you know of any safe way to bypass the fuse without losing all protection?

If it was me, I'd just short the fuse to get the drive running good enough for data recovery, connecting using a USB adaptor. Then throw the drive away, or at least don't use it for important data.

Done it many, many times with success

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I agree, put a solder bridge where the fuse is and image to another drive. Or remove a fuse from another pcb.

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Replaced the fuse with an visually identical fuse from a toshiba drive I had around, confirmed the fuse was good before making the transfer. After the transfer the drive has nearly the same symptoms, when i mean nearly, it now maintains ~23ma on the oscilloscope instead of 20ma. = /

Upon putting my ear to the drive to see if there was any difference with the new fuse; there is now a very very subtle click, just once, and it is very quiet I had to struggle to hear it, and I have pretty good hearing.

If it was say, the preamp; or stiction, I would assume the drive would be recieving more voltage then 20-23ma. Correct me if i'm wrong?


Any input would be nice; the main reason im looking into this is because i'm having trouble locating a donor drive; so I cant just pop this pcb onto a known working drive and prove that the pcb is bad, because I dont have an identical drive to try it on.


thanks for all your input so far =)

Russ,

Did you ever get this issue resolved?

I have an HTS425050M9AT00 myself that has failed. I think it's the heads rather than the PCA, but am not certain. Unfortunately, I have data that I've got to recover off of this HDD and, of course, no backup (we IT guys are the worst at that, aren't we?). I'm curious to know if you have found a solution, and, if so, what it was. If it turns out that I have a good PCA, you're welcome to mine; however, the MLC is slightly different than yours (DA1047).

Thanks.

Tony

Hello!


Looked at my records, and recalled this case.


The problem was the PCB, ended up locating a donor match, and resoldering NVRAM chip from the failed PCB to the new, working pcb with full success; all data was recovered.


In your case different procedures will probably need to be taken. Maybe I can help. What symptoms are you seeing on the drive that leads you to believe it is the heads? What kind of sounds is it making? Does it power on at all? What kind of tools have you used to check it so far?

Russ,

Thanks for the reply. I realize that this probably isn't the most appropriate forum for this discussion, but we'll plow forward until we get slapped by the moderators.

In my case, here's the background:

This drive was the HDD in an IBM Thinkpad X30 that is primarily used by my wife. She said she left the TP unattended for about 1/2 hour and returned to find a POST screen with 'Operating System Not Found' displayed (assume she had a BSOD followed by a reboot). The drive was spinning in the X30, but I could hear nothing but the drive spinning (no scratching, thrashing, etc.). To confirm that it was not a problem with the X30, I removed that drive and installed another drive which I had built some time ago for the same X30, and it booted fine. So that eliminated the X30 as the problem.

I then took the drive and attached it first to a USB enclosure, then to a 2nd HDD enclosure in my trusty old TP600, which I've used many times to restore corrupted OS partitions, recover 'erased' data, etc. It does not even recognize the drive, but display the following symptoms: The drive spins up, then a fairly quiet series of head seeks occur in rapid succession (7-8; can't quite tell for certain) then about three seconds' pause, then another series of rapid head seeks. The cycles of head seeks/pause happen 16 times, then... nothing. The drive continues to spin, but it is not recognized by a system. If I start a disk management program, I get the same series of cycles. This originally led me to believe that the PCA was the problem, so I began doing some research. I have a couple of other IBM/Hitachi drives and thought I could simply replace the PCA if I had a similar drive... obviously, that's wrong (and it's probably a good thing I decided to look before I leapt -- that's not one of my strong suits. ). My research actually led me here; to your post on this exact model drive.

I actually do not own any DR tools of any kind, and have done nothing more than the basic PD I just described. The data on this drive is irreplacable (wife did not back up her data to the NAS box as I told her to) so I am somewhat anxious about making sure this is done right. Chances are, based on what I've read, I'll send this to a professional (or someone more professional than me) to get the data off, and again remind the wife of the importance of backing up irreplacable data.

I'm sure this is probably pretty simple for you hard-core DR types, but that's not me (at least not yet). I'll be grateful for any assistance or advice you can give me.

TIA,

Tony

My best advice would to look up a reputable DR company; especially if you have no experience in DR; if this was a drive with no important data I would tell you to try some more things, but since this drive is of high importance it is in the best interest of the data to have a professional work on it.

digitania

"The drive spins up, then a fairly quiet series of head seeks occur in rapid succession (7-8; can't quite tell for certain) then about three seconds' pause, then another series of rapid head seeks. The cycles of head seeks/pause happen 16 times, then... nothing. The drive continues to spin, but it is not recognized by a system."

When you hear this cycle, does it make any clicks?

Judging by symptoms, this sounds like a failure of the head, but it would have to be carefully diagnosed to determine an exact problem.

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