Mouse was working and keyboard all going OK.
Next step was to boot it up from the external SCSI drive (which I have had working away happily on another machine). So I shutdown the Plus and it has the dialog with the restart button, floppy disk ejects. I turn around to get the SCSI drive and here this big POP sound, turn back and there is some smoke coming out the back of my beloved Mac Plus
![Sad :(](./images/smilies/icon_sad.gif)
Is that likely to be a capacitor that popped?