help burned maxtor pcb

salam alekm

i have maxtor 6y0l0 60 gb when i turn on the power ic "smooth" heats up and the hdd doesnt start my friend adviced me to change it first to see if the problem in preamp and i changed it with exactly same pcb but i dont know what was her hdd size(is size important?) when i turn it on the small ic with 8 legs in right bottom corner exploded plz help i marked the ic with yelllow color (is it rom?) i also measured resistance of motor power points it gives from left to right 4.1 ,4.1 ,2.1 ohm and the hdd is 60 gb (is these measures right?)

Hi are you sure it was the same model PCB? HDD capacity wouldn't matter for this chip.

Size doesnot matter for the changing pcbs the pcb no should be identical . The component that u have marked is a DC-DC convertor .

salam alekm

what is head stack plz?

This is a head stack :

Hi maxword,

almost surely U have a burnt preamp inside the HDA. So it is not an easy case.
Regarding the PCB, the capacity of the drive it is taken from is not that important, but the ROM version IS.

regards,
pepe

Hi does anyone have the pinout for the heads connector. This may be something that can be checked with a meter at the connector and save maxword some grief?

Hello,

I usually check the power lines by a multimeter (diode checking mode)against short circuit (+5V, -5V), U can find it out from the PCB easily.
the other lines I usually compare to a known good HDA.

pepe