Sometimes my Lexmark E323 won't start up

I have an ancient Lexmark E323 laser printer. Sometimes when I power it on it goes to all lights flashing, indicating a component failure. This happened 3 weeks ago. I tried over and over again over the course of 2 or 3 days to get it to start, but it wouldn't. So I left it for three weeks and tried it again today and it started up first time. This is not the first time this has happened. Does anything about the way it is behaving indicate a way to make it more reliable?

I'm not keen on...

Sometimes my Lexmark E323 won't start up