HITACHI HDT721010SLA360

[italyassistance]

HITACHI HDT721010SLA360

P/N 0A38016
S/N MH2PEA5K
MLC BA3013
I have this patient arrived with a burned pcb, I tried several times to read the rom separately but the external reader I have tells me "empty chip", I have not yet tried to solder the rom on a donor pcb, but if the chip was empty, is there a way to adapt a patient rom on this model, has anyone had similar experiences?

[fzabkar]

Is this your PCB?

https://s.turbifycdn.com/aah/yhst-14437 ... -fw-17.gif

There appears to be a linear 3.3V (?) regulator (Q2 near SATA power). I suspect that it powers the SDRAM and ROM. If so, then the ROM has a good chance of surviving an overvoltage.

Were any of the TVS diodes shorted? Was the motor controller burnt?

[lcoughey]

I don't think you can write the ROM through a PC3000 utility. I think you can sometimes get lucky and move the NVRAM to a donor baord with the same ROM version or you need to move the chips physically.

[italyassistance]

I resolve with moving the chip, on donor pcb, It was my reader that couldn't read that chip, but moving it made it work great.