SSHD ST500LM000 NAND initialization kill the PCB

[Miodrag]

Hi to all,

I just try to do standard reinitialize of NAND chip to actualize (refresh) the data and also check if the NAND is ok. I get the output that everything passes ok:

F3 T>/OI

ALF Parametric Tables Preserved

Flash was erased and ALF Tables have successfully been initialized
F3 O>

But after this PCB just didn't spin the drive anymore and stay busy without any terminal response. It's not the first time that I use this command, but I didn't have any similar problem before. Differences are only that I use a handmade serial terminal because every port on PC3000 is busy at the moment, but I can see how that can be a cause.

I didn't mind about the PCB, I have spare in the lab, but I just interest what can be the cause of this and if there is any solution to get back the PCB to live.

[digitalsupport]

Please try to explain step by step what you did. Maybe i can help.

[Miodrag]

If I can remember correctly (It's been a while since then). Standard DR case, hdd had numerous bad sectors but he initial properly. Do necessary backup of drive and try cloning procedure which he stuck after 15% or didn't started at all. I suspect the PCB may have some problem to, so I try to change it with my donor (previously swap roms) and try to reinitialize of NAND chip with F3 T>/OI
After power off the drive he isn't spinning anymore and stay busy without any terminal response.

[Tawfeek]

same scenario here with me