salam alekm hello iam trying to replace burned ic from this pcb with new one but it burnes the new one i want the data sheet to measure every thing good

You say the new one got burnt when you install?

If so, then you probably have bad preamp inside the drive.

salam alekm (hello but in islam)
if you mean that the ic on head is bad i tink it maybe bad and may not as when i try other pcb of similar type and let me explain to you all the problem here in egypt most of hdd wd800bb 00jhc0 with pcb 2060-701292-002 burnes the power ic or most of pcb and wd800bb 00jha0 with pcb 2060-001292-000 dosent burn much like the first one we use the jha0 pcb insted of the burned one of jhc0 we switch rom and all things is good but still the bios recognize the hdd as sabre not 00jhc0 so we asked all says you must change the ic or all pcb and as the pcb of 00jha0 worked on 00jhc0 but with not perfect at least the hdd head works good this means that the ic is not burned on head any way when we change the ic on the original board it burnes again some one told us may be short road in pcb but we measured every thing and all good so that i want the data sheet to measure ics on pcb

final question is too important to me i want to know where is files of firmware of wd800bb i know that half of it on rom that i switch when change pcb but the rest is it on cpu or on ic on head?
and that i think to malke pcb of 00jha0 with serial 2060-001292-000 work as 2060-701292-002 as they have same power circut but diferent firmware so if the rest is on cpu i will switch it with rom