Samsung HD321KJ problem

[Lukey868]

Good night, I have a hard drive samsung HD321KJ problem is that he has ceased to run, before that worked well, I decided that because of a bad power supply, burned diodes to +5 V and +12 V, I unsolder these diodes, but nothing has changed. Tell me how to return the performance?

[fzabkar]

If your board looks like this one ...

http://www.arkadasbilgisayar.com/images ... KJ-TKY.jpg

... then check the resistances of the polyswitches (assuming that's what they are).

Here is a similar layout:
http://www.users.on.net/~fzabkar/HDD/HD ... switch.jpg

[Lukey868]

The first photo is the same with my device...
I have only one fuse (PolySwitch) on the +12 V, I did you soldered, measured the resistance of 0 ohms, then soldered back on power, polySwitch is Hot - but nothing happens.
The second count differs from the first (second photo shows the two poly Switch, and I have just one, but it does not matter), the diodes to +5 V and +12 V are both in the first picture I took turns unsolder them. No results. What do I do next?

[Lukey868]

I was able to run the HDD problem was the resistor "000" - put a jumper, but when you run the HDD went smoke from TVS - Diode 12V with a hard disk works. Tell me how you can replace the diode TVS?

[fzabkar]

In your first post you stated that you removed both diodes. Now it appears that you have reinstalled them, or are you saying that you have replaced the 12V diode with one from a working HDD?

In any case you should first check your +12V supply. Either a bad PSU has killed a new 12V TVS diode, or you have reinstalled a shorted 12V TVS diode that was damaged by a previous overvoltage. Could you please clarify?

[Lukey868]

I repeat myself more correctly :
The hard drive started my friend on a bad power supply, HDD stopped working on my computer. I thought that TVS were burned because of a bad power supply, so I unsolder them. Then I found the breakdown in the resistor 000, set the jumper on the safe side and soldered back to the same TVS, the hard drive has started well, but went a smoke from the TVS +12 v, while the hard drive works correctly, but I want to replace the burned-TVS. Tell me, How can we replace this TVS?
Thank you.

[fzabkar]

You don't need to replace the burnt TVS diode if you just want the data, but in the long term you could replace it with an SMBJ12A.

Try http://ru.farnell.com.

More details here:
http://www.users.on.net/~fzabkar/HDD/TVS_diode_FAQ.html