sometimes when you suggest something on this site that isn't exactly kosher others comment in the thread and say mean things when ever i suggest a trick or hack to get something working, its for my personal benifit, shame on someone that would do some trick or hack "temporarily" just to sell on ebay and get more money... that i'd never do to anyone!@

one other trick i found out to get older 400k 800k 2m sony floppy drives working, when you take the 2 black screws out and pull the bottom head and top head out as an assm, on the bottom is a spring, it seems to loose tension, because when there is no disk in the drive it puts maximum tension on that spring, that is why if you are going to store your vintage mac for a while , pop a disk in there, maybe one that you don't care about,

i will move that spring to the next higher setting on the perch and if that doesn't work i will cut like 3 rings off the spring and re bend it around the perch, that way the head tension is now restored.

i would just do the cap trick to the caps that you think control the sound... etc i'm sure you know that