Are you hearing a thump through your speakers at turn on ? My understanding is, the majority of Japanese built, as well as Taiwan, Singapore and China built receivers, used speaker output relays, the relay you are not hearing. I would not worry about it, but to be safe, I would keep the volume control down for 15 seconds or so upon turn on. I have come across many units in my years in which the relays stopped working, however, it is worse when the relay did not " open up ", which resulted in zero output ( no sound ). Not worth a repair, imo, if you are getting output. Enjoy ! MrD.
