Any one have a schematic for a Pioneer SX-680 Stereo Reciever? I have an sx 680 in with left channel distortion originating outside the STK. MCCET Help make your TechAssist online repair tips database better! Submit your fixes here: http://www.circuitwork.com/techassist/tip/#tips To unsubscribe write to: techassist-request@xxxxxxxxxxxxx with unsubscribe in the subject line.