I have an old Yamaha CR-820 receiver/amplifier that no longer has any sound
output. The meters still show signal strenght when a tune across the AM/FM
bands but I get no audio from the speakers or the phone jack. No hiss. hum,
carckle or pops. JUst solid dead silence.

It isn't worth sending out for a shop base repair.

Has anyone has a similar problem? Does anyone know where I can obtain a
schematic or service manual?