IIcx weird floppy issue

[JRL]

So I recapped a IIcx recently (all SMTs and all axials) and it works great, with one exception. All floppy drives behave in the same odd manner. 

When I place a floppy, the drive simply whirs. Pretty much sounds like a hard drive spinning up (loudly), and the floppy drive doesn't even seem to begin the normal read operation/sound before I get a "disk unreadable" error. In addition, no drives eject properly (they all eject as normal on another Mac). The floppy drive cable in this IIcx also works as normal.

I've tried multiple floppy drives that were all regreased and work great in the IIci I have here. I was wondering if anybody's had this issue before. 

I also bought a NOS IIcx board and plan on using that board after recapping it but I still want to fix this board eventually.  I tried testing all the traces coming out of the SWIM (where I thought there would be an issue) and they seem to be fine but I figure I might have missed something, and I have the schematics here but I'm not too sure what to look at.

Also, sound works perfectly on the IIcx post recap.

Thanks!

-J

 

[JRL]

There are also a few traces that physically look bad (black) but they test fine for continuity. Only one of them is anywhere near the SWIM though, the rest are in the power circuit. Should I just run wires through them anyways?