I have a "dead" Mac LC475. Specifically, no image on monitor (tried another monitor as well) and apparently no keyboard communication, ie Command-E will not eject floppy disk. Possibly booting up ok - chimes as usual. Hard drive appears to be running ok (also tried swapping internal drive with another known good one as well as attaching external drive.)
Hard to diagnose without looking at the machine, but suggestions would be welcome. Motherboard gone? Bios?
Thanks in advance for your suggestions