Hello everyone!
I introduce myself, my name is Rodrigo. I live in Argentina, so I apologize if my English is bad.
First, I apologize for asking for help without having helped before. I've been reading this forum since 2017, but I've only just had time to get back to work on the Mac during quarantine.
In 2017 I had the joy of finding a forgotten Macintosh Plus (Apple is not very common in my country) in an old warehouse. He had suffered a lot, he had the rear battery door with the battery burst and a lot of dirt. When turned on, the dreaded SadMac appeared with a co