Problems on WD 800BB

[beto]

Hello all hddgur´s

This is my history , two WD Sata, WD800JD SATA , RAID 0 one of the disk, make this syntomph, knock two times motor stop, and start again, im try changing PCB writing ROM patient on Donnor PCB, problem still, so the only solution Head exchange, when i was on the process opening the Donnor HDA, im just check dust and some of dirty on the platter on HDD donnor, this donnor was from the same server Same Model, DCM etc, Recertified both, so im put the Head stack on patient, and after the process, recalibrate was detected by BIOS, and begin to clone it. at some sectors show AMNF, but still cloning , at 11% begin to knock, and now its with same problem Knock two times, motor stop and start again

what do u think

Thanks

sinceraly

Alberto Pavón

[pcimage]

Hi Alberto!

I think u may have a small surface scratch/defect which broke the original heads. And as you have reached the same place again, it's broken the new heads.

Only thing I can suggest, is more heads, and continue the image from the reverse.

IMHO, of course

Sean

[beto]

hy sean, im check that the media from patient its contaminated, after this happend, im try to put again the patient heads on patient hda, when i was lefting on platter i can see a dirty, lefted while the heads, move over the platters so inmediatly, take off, my theory its , the patient has a contamination on platters , and left dirty the patient heads, and begin to knock, so when i put the donnor heads on patient, was able to get a some of sectors, and while was moving over the platters was contaminated too, and now begin to knock, im thinking on try to clean it with isopropyl alcohol , a suggest?


thanks sean and all people here

[pcimage]

maybe possible to clean upper and lower platter surface, but inner surfaces NO. (well, not without inevitable platter slip)