Hello,

I put a 19 Volt alim on my external HDD box which caused the HDD not to work anymore. I bought a new HD753LJ in order to replace the PCB. I replaced it but I don't see the HDD in Disk Manager although it is present in Panel Control. The bios recognized it well. On the new disk the date of manufacturing is 2008/10 as for the old disk it is 2007/11.

I sent a message to a pro who told me to remove the TVS from the original board. I read few topics and saw that every time someone had to remove the TVS, a burnt area appeared on the PCB. In my case, I don't see any burnt area. Please see the pics.

Thank you for any answer.

Finally, a friend came with a metrix that showed the TVS was fried so I remove it. By remove, does it mean simply remove the thing without doing anything else ?

Thank you for any answer

Just remove it !

It worked. Thank you very much !

Hi, i think i have had the same problem right now, a smoke was emanated from that area (as shown "dead" above) because of a jumpy supply, my Hard disk is samsung HD753LJ, the same in the pics.
i want to know if i can remove the TVS (the burnt part) by my self or i have to go to a professional ?
should i remove the motherboard to remove the TVS ?
can i replace it (TVS) with a new one that works ?
are my datas lost because of this problem ?

please, if have a idea.
thanx in advance.

Better to send the HDD to a pro.
Probably there is also burnt preamp or something else.
I could help you. Just send this drive to me

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This user was found to be affiliated with Ace Lab/PC-3000. See this topic for details.

If you're comfortable with a soldering iron, then you should be able to do it. However, any time you mess with your own HD, the life of your data is in YOUR HANDS!

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You don't have to backup all of your files, just the ones you want to keep.

If the problem is the same, of course.

thanx for answers.
i think i will search pro of samsung in my country first. i am affraid to harm it if i will do it by myself.

and what about the 2 last questions :
can i replace it (TVS) with a new one that works ?
are my datas lost because of this problem ?

my HDD was alomst full (700 giga) with very important datas, i spent this last year of my life to collect them.

thank you again for advices.

I think it is the easiest problem of all HDDs

and strange too, you have to ( remove ) parts to ( fix )

thank you guys.
i am less worried now, especially after reading the answer of Spildit (No, your data is quietly sleeping inside the patters of your disk. Even if the entire PCB burned your data would still be inside the platters, so you are most likely with luck Data can be retrieved almost for sure.).
when it will be fixed, i will come back to inform you bout details.

my HDD is aliiiiiiiiiiiiiiiiiiiiiiive
I took a long time because I forgot it.
few days ago, I have gone to samsung shop, a "nice" vendor help me to remove the black "fuse" damaged (the one beside the dead one in the pic above), the idea is that the black fuses when they burn (one of them) they cut the electricity to protect the composites of the motherboard, so you have just to remove the burned fuse.
thank you again for your help, all the datas are in perfect state.
I will tell friends about forum.hddguru.com, a great forum.

Hello all, I am having problems with this same HDD (Samsung HD753LJ).

The drive in question was a "data only" drive, which was secondary to my "OS" drive. I removed the "data only" drive to open a slot for cloning the OS drive to a new drive I purchased with more capacity.

After the cloning procedure, I replaced the old OS drive with the new one and then reconnected the Data Drive and it completely failed. The computer powered up and booted just fine, but the drive was completely dead. It did not spin up, and it was not seen by the BIOS.

I am an Electronics Technician, but computers are not what I am used to working on. I stumbled upon this thread, looking for a replacement PCB.

I am unfamiliar with the abbreviation "TVS". Some comments on this thread call it a "fuse", which is believe is likely inaccurate. That's no matter. What I DID find is that on my board, the component that is circled and marked "bad" in the picture reads like a diode (on the board, I have not removed it) and the component immediately next to it reads ".183" with the leads applied in both directions with my meter on the "diode" function. They both read "open" using the continuity check function.

Am I to understand that I can expect my drive to return to functionality by removing one or both of these components?

Please be specific in your answer, and thank you for your time.

TVS stands for Transient Voltage Suppression diode. In the event of the surge it will fry itself and create a short. Removing the fryed TVS after a short will allow the drive to power up again , baring any other problems.