Question Hitachi hard drive just dead heelp!!

[gizzar]

Hello guys

I came across this site in my search of a solution for a hard drive fix

I have this client that asked me if i could get his data out of his dead hard drive, and i say okay i wanna give it a go!

He told me the drive would not read when pluged in, maybee wrong power connected to it back in the days or something he dont know he cant remember because its a old drive with pictures on it he wants

First i thought it was stuck reader arm, but it was not and everything in there seamed fine, so i started to search and found some videos and info in google that TVS diode can go bad, so i took out the circuit board and started measuring on it, but the thing is i am not sure what readings i should get on the diffrent diodes, fuses, capasitators hope you can help me out here and also maybe find my problem and tell me if its something DIY or its a board replacement and a bios swap?

i am pretty sure i am on the right pass, but this may be out of my range soo need some help please to tell me

i post some pictures of the board and some videos of me measuring on the board, maybe you can tell me what i need to test and what output it have to give, i am pretty sure i am doing something right in locateing the problem but again not sure

or hope somebody out there have a solution

Best regard
Gizzar

Board is a Hitachi 500gb 0A58732 <--- white label number

https://www.hddzone.com/hts545050b9a300-hitachi-pcb-0a58732-p-2400.html <----- this one

Pictures:

https://easyupload.io/g76rtx

https://easyupload.io/yf5qbt

https://easyupload.io/tag1n7

https://easyupload.io/kanzsp

Videos:

https://www.youtube.com/channel/UCWZqXfHFmmuh2Xb_KiShItw/videos <---- 3 videos

 

[gizzar]

If a fuse is open circuit, it has blown

On this picture if i test each individually i get readings on D2 - D1 - 2 yellows - nothing on F2(multimeter show OL) - there is nothing in F1? - havent tested the little black one under F2

so is F2 blown? its also this area i get shorten out on the board please see this video i made and tell me if F2 is blown?

View: https://www.youtube.com/watch?v=8NrowyhMqHI

View: https://www.youtube.com/watch?v=5Fh8jaQNG9Q

View: https://www.youtube.com/watch?v=TKjFSsNYMXY


its also arround the power/cable area so maybee we are getting closer?

because the disk dont take power at all

 

[fzabkar]

https://www.swe-check.com.au/pages/learn_fuse_testing.php

 

[gizzar]

https://www.swe-check.com.au/pages/learn_fuse_testing.php

yeah i checked that,

so can we for sure say that F2 is blown if i cant catch any reading one way or the other? i will check that now again to be sure...

what is the solution to the blown fuse? replace it? remove it? soldering the to points after removeing ?

 

[DSzymborski]

Not as clean as the right thing true, but i was carefull

Not remotely clean. "Clean room" doesn't mean that you washed the floors and dusted and were really careful. Clean room means something specific like this.

"Being careful" is about as close to a "clean room" as driving while drinking a quart of whiskey is to safe driving.

 

[gizzar]

Not remotely clean. "Clean room" doesn't mean that you washed the floors and dusted and were really careful. Clean room means something specific like this.

"Being careful" is about as close to a "clean room" as driving while drinking a quart of whiskey is to safe driving.

i know 😀 i was not what i mean by almost

i open it quick and did it under a food bag (sterilised bag for food) so i was carefull

but no fokus on why the drives gets no power at all, we all know its not because a micro dust landed on the plate

 

[gizzar]

Okay so i measured further on the board

https://imgbb.com/PN1F834 (THERE IS A BLACK N ON THE F1 FUSE IF THIS TELLS YOU ANYTHING)

In continuous mode:

F1: no reading at all no biip no nothing UPDATE NOW I GET SHORTEN OUT
F2: no fuse here but i get biip here

Little black fuse under F2: i geet biip (but with this reading its also like totching the probes i think because its the start of the print board)

In 200 Ohm range

F1: UPDATE: start at 8!!! and jumps to 3 and stable at 02.7 ??????????
F2(no fuse): nothing

Little black fuse under F2: 0,06 (witch should be very right and good and that means that there is power to this little black fuse BUT SINCE THE NEXT CONNECTION TO THIS IS F1 AND I DONT GET 0,06 OR A BIIP THIS MEANS THIS IS DEAD??)

CAN SOMEBODY CONFIRM THIS ? 😱

In continuous mode now i get shorten out both ways on F1

and in 200 Ohm range it start on 8 and drops fast to 4 and get stable at 02,7 ????

Seems like the F1 i blown and its to the 5v pins witch the drives runs on only... i am right here???

 

[gizzar]

So nodoby can tell me if the F1 fuse is shorten out or blown based of my readings above?

and if so can i just remove it? replace it ? soldering the 2 points efter removeing ?

 

[NightHawkRMX]

Fuses can be bypassed by shorting across them, but there is a reason the fuse failed to begin with, and bypassing the fuse could cause further damage to the drive and or cause burning.

 

[gizzar]

Fuses can be bypassed by shorting across them, but there is a reason the fuse failed to begin with, and bypassing the fuse could cause further damage to the drive and or cause burning.

yeah i am aware of that

by shorting it you mean soldering the ends back together when removes right ?

i thinken about replace it with a new one

but cant we for sure say out of my reading above that this fuse has died?

if i remove it and plug it in a PC its gonna be my really old working pc i dont care about

 

[gizzar]

So i am 99% sure i found the error at least one of them

Just testet on other drive on the POWER pins 5V and got good readings in 200k ohm range

Now i did the same to the dead hitachi drive witch only runs on 5V (2,5" HDD) and i gor nothing!

So the circuit board dont revices it power (5V) that explain why i get shorten out of the F1 fuse, and get weird readings, beyond the F1 fuse all other diodes/fuses ect seams good, not get shorten out and get good readings

So i will most likely order new PCB board with firm transfer, and i expect the drive to startup, but i will also expect bad sectors that will prevent me from getting all the data, i am just happy if the drive spins and maybee get 20% data out what the hell i learned 200%