Replacing TO3 transistor insulators

[Calamaro]

I' m recapping my old NAD 3120 and I wonder if it's worth replacing (output) transistor mica insulators and put some fresh thermal grease (or use silicone pads? or simply redo solders?)

 

[alex mm]

I'm for change only the silicone grase , mica are good enough the old one, or change the mica insulator , it's not expensive . 😉
Regards Alex .

 

[JMFahey]

Not necessary unless you replace transistors or pull them for any reason.

 

[JonSnell Electronic]

Not necessary unless you replace transistors or pull them for any reason.

Totally agree. Leave well alone unless you replace the output transistors!