It's a 40 year old control and been reliable as hell. Now it will shut down mid run. It's intermittent and will usually display gibberish on screen or just go black. It did pop up a 920 error the other day so I dumped all the progs and reloaded but it still shuts down. I know how to reload but can't remember how to dump all parameters. I no longer have a parameter tape but have the printout so reloaded by hand in the past. Cabinet fan is out so I've left the door open for cooling until I get a replacement fan.


Ideas?

JohnF