Hey you all
Thanks for the reply's
The power amp chip is the LM 3876
I took of the transformer socket from the board (so it has nothing connected to it) and, when connecting the amp mains, the fuse blew off. So, i believe that it might be the power transformer.
The transformer primary winding has about 2kOhm and the secondary has about 1.6 Ohm (about .8 Ohm in each tap) I think is a bit low...
I´ve attached a photo.

Hey sim sou de Portugal

Cheers

Hello
I have a tech 21 trademark 60 with a broken power transformer. Does anyone knows the transformer characteristics?
I have to replace it but i can´t find any schematic...
Thanks