What's The Signs Of A Bad Torque Convertor

Anyone experience a bad Converter, what are the signs, and would the whole Trans need to be rebuilt

Last torque converter I lunched sounded like a handful of quarters getting dropped into a blender. And yes, I wound up having the trans gone through. I haven't messed with autos in years, but there are several guys here that do. What are the symptoms?

@mikestang63
 
when we burnt up the converter in the turbo car the only thing we saw was the slip was going higher and higher