HI guys, I have the following drives: 1. S/N: 9QM8FNQ4 ST3500320AS P/N: 9BX154-303 Firmware: SD15 (not sure updated to what now. maybe the latest one) Date code: 09174 Site code: KRATSG WWN: 5000C500107BFC39 STX-ST3500320AS (B) 2. S/N: 9QM8GC4C ST3500320AS P/N: 9BX154-303 Firmware: SD15 Date code: 09174 Site code: KRATSG WWN: 5000C500107BD7C7 STX-ST3500320AS (B) The latter is displaying signs of the BSY error, no click sound, never had shock. I've brought it into Seagate where the guy successfully updated the firmware and I was able to boot from it again....halfway. Then it was undetectable again. I'm thinking of swapping the logic boards (that's what they do at data recovery centers and charge people $1000 for?) with a similar/identical drive which I bought at the same time. Can anyone tell me if this is safe? The data is important enough to not send for RMA, but not important enough to warrant professional services. Cheerio, Nicholas.