All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 21 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 13:10 
Offline

Joined: April 18th, 2018, 11:36
Posts: 9
Location: Sri Lanka
Hi guys,

Got a electric surge on a laptop having this drive, it doesn't power up at all, hope it's a PCB problem?

checked 2-3 fuses (yellow) & 2 TVS diodes (red), which I assume they are, looks good. 2 fuses passes current and 2 diodes read as ~600 ohm (on reverse 111 ohm - got this reading when they are on circuit).

Also checked, 4 diodes near SATA connector (blue), they do not seem working! not sure what they are?
Can someone please confirm if my observation is correct?

Many Thanks,
-JS


Attachments:
disk.png
disk.png [ 319.36 KiB | Viewed 1933 times ]
Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 13:14 
Offline
User avatar

Joined: April 3rd, 2011, 0:19
Posts: 1761
Location: Providence, RI
If the drive doesn't power up at all, then you are looking in the wrong place examining components on the SATA lanes.

The readings you get on the diodes sounds pretty normal for good diodes.

The best method here is probably going to be just replacing the PCB along with transferring the IC602 chip.

What makes you assume it's a "power surge" on the laptop? That's pretty rare given that laptops run on batteries.

_________________
Hard Drive & RAID Data Recovery Services
https://www.data-medics.com/raid-data-recovery/


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 13:44 
Offline

Joined: April 18th, 2018, 11:36
Posts: 9
Location: Sri Lanka
Thanks for the directions.
due to a lightning strike from telephone/power line - router, monitor & laptop, all got burnt!
So trying to recover data from the drive now.

Thought of switching with a exact same PCB board, the spec on the drive matches following:

PC Board sticker: OJ14451, DA4740D
P/N: 0J26252
MLC: DA5112
Rev: 220 OA90351 01, 110 OA90351 01 (as per PCB)
Chip: 88i9305-TLA2

e.g. like this one - https://www.ebay.com/itm/HTS541075A9E680-0J14451-DA4740D-0J26252-DA5112-Hitachi-SATA-2-5-PCB/162085081926?hash=item25bd061346:g:4HwAAOSwY0lXSPTM

Does this still need transferring firmware chip from original board? is it correct chip I marked in red?

Many Thanks
-JS


Attachments:
20180418_023334.jpg
20180418_023334.jpg [ 131.82 KiB | Viewed 1885 times ]
Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 15:01 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10355
Location: Australia
The "diodes" in the blue box are capacitors.

If you place your ear against the drive, can you hear any sound at all?

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 17:22 
Offline

Joined: April 18th, 2018, 11:36
Posts: 9
Location: Sri Lanka
no sound at all.

Many Thanks
-JS


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 17:39 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10355
Location: Australia
See https://www.hdd-parts.com/14062934.html

They will transfer the correct chip (you have picked out the motor controller - wrong chip) for no additional fee.

What voltages do you measure at the "1R0" and "H" coils?

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 17:46 
Offline

Joined: September 30th, 2005, 7:33
Posts: 568
fzabkar wrote:
(you have picked out the motor controller - wrong chip)

Look for 8-pin chip.


Last edited by BGman on April 18th, 2018, 17:50, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 17:50 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10355
Location: Australia
BGman wrote:
fzabkar wrote:
(you have picked out the motor controller - wrong chip)

And you are wrong, too!!! This is the DRAM chip.

I'm looking at the red box. Where are you looking?

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 18:09 
Offline

Joined: April 18th, 2018, 11:36
Posts: 9
Location: Sri Lanka
Thanks for the guidelines. so it must be the one marked green?

will check the voltage across "1R0" and "H" coils tomorrow.

Many Thanks
-JS


Attachments:
20180418_023334.jpg
20180418_023334.jpg [ 129.64 KiB | Viewed 1868 times ]
Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 18:11 
Offline

Joined: October 16th, 2013, 13:21
Posts: 568
Location: Brazil
Possibly yes, but what are the markings on the chip ?


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 18th, 2018, 18:20 
Offline
User avatar

Joined: April 3rd, 2011, 0:19
Posts: 1761
Location: Providence, RI
Yes, that's the one. And yes, you'll pretty much always need to transfer that.

_________________
Hard Drive & RAID Data Recovery Services
https://www.data-medics.com/raid-data-recovery/


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 29th, 2018, 7:13 
Offline

Joined: April 18th, 2018, 11:36
Posts: 9
Location: Sri Lanka
fzabkar wrote:
What voltages do you measure at the "1R0" and "H" coils?


is it ok to connect the PCB only (without disk & platters) to the SATA connector to measure the voltage?

btw, what risk (e.g. ESD) I may have if I attempt to transfer the ROM and use soldering iron to solder it (with flux ...etc) as I do not have a advance SMD rework station.

Many Thanks
-JS


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 29th, 2018, 9:33 
Offline

Joined: October 16th, 2013, 13:21
Posts: 568
Location: Brazil
Possibly, it is okay.

It depends on the soldering iron, and the expertise of the person using it. If you damage the chip, or the pads where it will be soldered to, or the surrounding componentes, it will be game over. So, choose wisely,.


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: April 29th, 2018, 10:21 
Offline
User avatar

Joined: December 19th, 2006, 8:49
Posts: 9037
Location: Portugal
jssmith wrote:
is it ok to connect the PCB only (without disk & platters) to the SATA connector to measure the voltage?


Yes, you can connect PCB only to SATA + POWER and let it run without any problem. The PCB will be at BSY state for a while and then it will report DRDY and DSC. From there if you know a set of Vendor Specific Commands (or if you have a IBM/Hitachi/HGST firmware tool) you can READ and WRITE to the NVRam by sending a set of 2 "Super ON" commands and a VSC to read/write the NVRam either directly from the chip or from RAM, etc ...

So to sum it up yes, it's 100% safe to run the PCB only for your drive as long as you don't short anything on the pcb while it's powered on, etc ...

_________________
1Q9xrDTzTddUXeJAFRn37aqh1Yr6buDCdw - (Bitcoin Donations)
paypal.me/Spildit - (PayPal Donations)
The HDD Oracle - Platform for OPEN research on Data Recovery.


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: May 2nd, 2018, 16:58 
Offline

Joined: April 18th, 2018, 11:36
Posts: 9
Location: Sri Lanka
appreciate all comments so far, they helped me lot.

if I use a donor PCB for this Hitachi drive, does the numbers (first two) on the PC Board sticker need to match exactly?
(in addition to matching board Rev, chip, P/N & MLC numbers and eventually with ROM transfer)


Many Thanks
-JS


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: May 4th, 2018, 16:10 
Offline

Joined: April 18th, 2018, 11:36
Posts: 9
Location: Sri Lanka
Attempting to repair original PCB seem bit difficult for me. so I ordered a PCB as I described in my previous post.

but I received a wrong PCB with sticker reading 0J21947, DA5260 instead of 0J14451, DA4740D (as per mine)
When quarried with vendor they state that they are still compatible even though sticker mismatches!!!

i.e. they stated that matching the PCB revision and controller chip is enough.

I quickly transferred my ROM to donor board using a new smd rework station but I'm bit scared to use this PCB due to this mismatch.

Can someone please help confirm if this is OK to proceed, and not going to cause any issue to my data or to the ROM/NV-RAM?


Many Thanks,
-JS


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: May 5th, 2018, 15:08 
Offline

Joined: April 18th, 2018, 11:36
Posts: 9
Location: Sri Lanka
fzabkar wrote:
What voltages do you measure at the "1R0" and "H" coils?


I measured the voltage at 1R0=0.7 and H coil=2.4.

Any more suggestion to troubleshoot this board?

Many Thanks
-JC


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: May 5th, 2018, 16:52 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10355
Location: Australia
jssmith wrote:
fzabkar wrote:
What voltages do you measure at the "1R0" and "H" coils?

I measured the voltage at 1R0=0.7 and H coil=2.4.

I would have expected that the 1R0 voltage would have been closer to 1.0V or 0.9V. What are the corresponding voltages on the donor PCB?

BTW, do you measure 5.0V at the SATA power connector?

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: May 5th, 2018, 17:59 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10355
Location: Australia
Are the motor controller (TLS2601) or MCU (88i9305-TLA2) hot to touch?

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: Fuse & TVS Diode for HTS541075A9E680
PostPosted: May 7th, 2018, 16:01 
Offline

Joined: April 18th, 2018, 11:36
Posts: 9
Location: Sri Lanka
fzabkar wrote:
I would have expected that the 1R0 voltage would have been closer to 1.0V or 0.9V. What are the corresponding voltages on the donor PCB?

BTW, do you measure 5.0V at the SATA power connector?


my multimeter having a slight error it seems, planning to replace it.
there is a small delta voltage different between each side of 1R0 & H coild - is this 1R0 zero ohm?

my board: 1R0=0.91v & 0.87v and H coil=2.5v & 2.6.
donar: 1R0=0.9v & 0.85v and H coil=2.38v & 2.5.

SATA pin 7-9 has 5V.

fzabkar wrote:
Are the motor controller (TLS2601) or MCU (88i9305-TLA2) hot to touch?


they seem normal temperature.

Many Thanks
-JC


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 21 posts ]  Go to page 1, 2  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 26 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group