So yesterday at work I was tasked with installing a refurbished transmitter we have (bought from the manufacturer)

Put it in an equipment rack, wired and cabled it up (takes about 45 minutes) and started to test it. NADA

Took it back out of the rack, over to the test bench.,,,,, NADA

Opened it up and started tracing components, testing them one at a time All looked fine.

I’ve now spent almost 3 hours on this

So I call the manufacturers (24/7) help desk. ID myself and give them the units serial number

Tech says to me “Oh ,,, we were supposed to contact you that that unit was recalled. Could you please box it up and ship it back to us and we’ll either credit your acct or send you a replacement”

Thanks a lot, Sparky!!