Hello, what was the problem? And what do you think of this power amp? Are the schematics very different from other amps on the market?
Very simple. The factory had made a bad solderjoint on one leg of one of the input transistors. So when I played a little louder than usually it got hot and lost connection with the pcb. And the relay kicked in. As it should. Took me years to figure out. 😡 Anyway, the amp is really good. Very good indeed.