New member : Help needed - PCB for Seagate 1TB

[networkpc3000]

yeah. you can. as well is replace it.

[grimsheeper]

I tried to power it on with the TVS removed and it didnt power up at all

TBH expected this, surely it needs to be bridged otherwise no power will get to the PCB at all?

[harddrivespecialist]

surely it needs to be bridged otherwise no power will get to the PCB at all?

No, its not. You other parts on the board that failed.

Seek for a professional help.

[fzabkar]

I tried to power it on with the TVS removed and it didnt power up at all :(

TBH expected this, surely it needs to be bridged otherwise no power will get to the PCB at all?

That looks like the 5V TVS diode. Your next DIY option is to replace the board and transplant the EEPROM chip, assuming it survived. The EEPROM is powered from an onboard switchmode regulator, so it's probably OK.

[Eric Lee]

Hi,

We have this working PCB in stock too, pls contact my hotmail.

Thanks
Eric

[grimsheeper]

You got mail!

[grimsheeper]

Guys!
Help!

I managed to source a new PCB, but now the drive simply clicks.... and then powers down (it seems to stop spinning)

Windows managed to find it as a 4GB drive, but would not initialise it, and it isnt detected properly in BIOS - though it can see something...

Whats the matter with it now?!

[fzabkar]

I managed to source a new PCB, but now the drive simply clicks....

Did you transfer the EEPROM?

[grimsheeper]

transfer it from what? i havent got one...

[fzabkar]

transfer it from what? i havent got one...

It's the item identified as "flash":
http://en.rlab.ru/doc/images/hdd_main_parts/PCB1.jpg

[grimsheeper]

ahh that.

I havent no.

I do have the old PCB with that on...

I take it it needs de-soldering and transferring?

[fzabkar]

ahh that.

I havent no.

I do have the old PCB with that on...

I take it it needs de-soldering and transferring?

Yes.

BTW, the failure and success story in this thread may be instructive:
viewtopic.php?f=1&t=15335

[grimsheeper]

grrrrrrrrrrrrrr looks damn fiddly!

I have a colleague who solders very well, if this is the answer then its what we will have to do...