Plus 800k FDD magic smoke???

[lostkerbal]

I was recently working on fixing up my Mac Plus (new MoBo, RAM, etc.), and I was testing it with the case off and the FDD outside of the case, just sitting on top of its mount; it'd had problems ejecting and it was just easier for me to be able to push the manual eject. It read a disk perfectly well a couple times, but after a boot attempt, the drive started producing magic smoke, then stopped working. I'm unsure if it was the main motor burning out/getting stuck or something else, but I now have a dead floppy drive. Any ideas? Is the main drive motor replaceable?

 

[bibilit]

The floppy alone standing on top of the metal frame ? Without any protection in between ?

So probably the board got shorted by the frame.

 

[GreenBar0n]

Can you get any high resolution pictures of the PCB on your FDD?

 

[lostkerbal]

The floppy alone standing on top of the metal frame ? Without any protection in between ?

So probably the board got shorted by the frame.

It was standing free of the computer's frame, sitting on the workbench on top of an upside-down internal floppy drive mount.

 

[feltel]

Could it be a similar problem I had with a SE/30 drive a while back? https://68kmla.org/bb/index.php?threads/blown-component-on-sony-mp-f75w.44807/

I tried running it without the eject motor, but this seem to kill a component (Q4) on the drives PCB.