i fired up the LCII again today, no whistling, nothing. Unfortunately I get the idea it could be the mobo. 
Oh well, I'll have to wait till I'm home next (end of term, in June) to have a look at it, since thats where all my other LCs are.
Anyway, I had a bit of a play around with the Performas today, and I found that the 5260 board boots when its connected to a HDD with a good System Folder. However, it seems that like my other 5260 board at home, the damn SCSI bus is blown! I wonder if its an issue with these machines, perhaps? One thing I've done though is transfer my good logic board and hard drive over to the 6200 shell...I thought it was a bit of a waste having the ugly 5260 on display in my room, in all its yellow glory, when this 6200 shell is in good, original condition, with very little yellowing. Look here. And yes, I have decided to downgrade to System 7.5.5, since its all good and retro, and stuff. 
By the way, if anyone's curious as to why the 6200 has a CD-ROM eject button in that pic, and doesn't have one in the pic I took yesterday, thats because I found the button rolling around in one of the boxes and decided to put it in its rightful place.
Oh well, I'll have to wait till I'm home next (end of term, in June) to have a look at it, since thats where all my other LCs are.Anyway, I had a bit of a play around with the Performas today, and I found that the 5260 board boots when its connected to a HDD with a good System Folder. However, it seems that like my other 5260 board at home, the damn SCSI bus is blown!
I wonder if its an issue with these machines, perhaps? One thing I've done though is transfer my good logic board and hard drive over to the 6200 shell...I thought it was a bit of a waste having the ugly 5260 on display in my room, in all its yellow glory, when this 6200 shell is in good, original condition, with very little yellowing. Look here. And yes, I have decided to downgrade to System 7.5.5, since its all good and retro, and stuff. By the way, if anyone's curious as to why the 6200 has a CD-ROM eject button in that pic, and doesn't have one in the pic I took yesterday, thats because I found the button rolling around in one of the boxes and decided to put it in its rightful place.