My first A500 was bought in 1987, during Christmas season...
Unfortunately, the computer was faulty from the beggining. After a few hours (2h) trying to get acquainted with Workbench and Amiga Extras suddenly the monitor turns to red.
Everything I've tried ended to nothing. I was hopeless because the shops had closed for Christmas and I was the only (perhaps..) boy in Athens with such an incredible machine in my grasp and I couldn't get it to work.
When I got it back to MEMOX (the exclusive dealer in Greece) they said that they will replace it with a new one, because they don't know what had happened! They had never encountered a similar problem before!
After the replacement, the new floppy was a bit more rough when was working but the same unit with the same monitor lasts till now, 19 years later