I have an RPC-90 REN Console stereo. The amplifier produces a hum and crackles with bass. Tried speakers and isolated problem to amp. Think it might be the old Mallory Caps and those are hard to find.

Love this old stereo, great peice and can tell it would produce great sound.

Looking for schematic and/or advice. Thanks

You can find that model in Sams Set 1022 Folder 7 Steve.