"This unit is just out of warranty apparently."
They pay engineers good money for that kind of timing! After-all its the LAW, or at least in the US it is. Act of congress in the 70's - Planned Obsolecance - Consumables get a varied life expectancey. Cars 3-5 years, down from 5-7 years before major repairs. And the only things really allowed to last are Military, and Farm Equipment, are allowed to last 50 or more years through limited repairability.
The tool you have there is considered consumable.
