"Leonardo Capossio" wrote in message
...
Y removed them from the heatsink, cleaned everything with alcohol (even
tried not to touch it with my fingers) and put fresh thermal paste (with
isolation) between the metal plate that holds the transitors, between the
plate and the heatsink, and between the heatsink and the case, but still
the metal plate is hot ?as hell (can't even touch it) and the heatsink is
very hot, but not so much.


When putting the paste on, did you use the thinist layer you could ? The
paste is not that conductive to heat, just beter than air. The ideal
ammount (which probably can not be done) would be to have the metel surfaces
touching each other on the high points and just the voids filled with the
paste.
Less is often beter than more.