Sorry if this is obvious or posted somewhere else, but I have a Macintosh plus that chimes and then HAD a small postage stamp with smiley face and no error code. After a few off and on's, it now has a thin line the width of a postage stamp in the center of the screen. It still chimes and I assume it is booting off of a floppy as after I give it time, the disk will eject with clover leaf and E. The screen never changes, small line maybe 2 pixels high and 8 pixels in length at the center of a black screen. I've washed the main board reseated RAM and socketed chips, reflowed Flyback., analog connectors.
