Curtis 1219-4860 PMC controller repair

[BrianG]

Haven't seen you here for a long time. Nice repair job!

Originally Posted by GriffinRU

...not sure why but OEM (CURTIS) didn't use any heatsinking compaund...

IIRC, normal thermal compound is electrically insulating and if they are using the tab of the FET as one of the conductors, then it would be like adding resistance.

Could also be related to the environment that the controller is meant to operate. Maybe the TIM stuff back then had some issues with certain temps or humidity levels making it more of a thermal hindrance than help.