@RoninGrey @shortstories If it ain't broke don't fix it,I was a repair man more than a maintenance guy,the facility was built in the late 60's, been upgraded several times over the years, integrated systems,we had MS-DOS programs a laptop that was like from the 80's with the floppy's,I actually got to solder boards and work on AC square wave communications for long distance signals,one machine ran on PLC5 some had contactors and relays DC motors no VFDs, frequency drives, I miss the challenge