Repair Of Sencore Lc103 Service Manual -

Detailed circuit diagrams are available through the Audio Karma Database or EEVblog forums.

Finding a true "Service Manual" (with full theory of operation) is notoriously difficult for the LC103, but the following resources are your best substitutes: Repair Of Sencore Lc103 Service Manual

Some technicians successfully use DeoxIT spray, though opening the relay to clean contacts with a sliver of a business card soaked in alcohol is more effective. Detailed circuit diagrams are available through the Audio