Dani wrote:
You usually have to also replace the 2SC3181, as well as the 2SA1264
outputs, & look for surface mount 220 ohm resistors
right by the outputs. They usually go also, make sure the mica
insulators are in the right location. These Pioneer units use
a 'self destruct' trigger that activates if the bias drifts which is
designed to intetionaly destroy the ouput transistors & blow the fuse.
Use fresh heat sink compound on the outputs to keep them cool. Finally
make sure the speakers that were on
the amp before it blew have good woofers, as this will blow it all
again. Hope this helps, Dani.


And don't forget to resolder the bias transistors.

Mark Z.