[Shop-talk] Mystery of the blown transformers

[Trevor Boicey]

David Scheidt wrote:
> I'm with Randall.  An AC/AC transformer is just a hunk of iron with
> wire wrapped around it.  No moving parts, not much that can fail.  As
> long as they don't overheat, and don't get exposed to weather, they
> should last a century or three.

   Agreed, but who knows what else is in there that won't last 30 
years... some glues or something holding it together, some primitive 
plastic insulators, who knows.

   Something gets old and cracks, humidity gets in, corrosion....

   Iron plus air doesn't last forever...