you have the users manual?
file:///C:/Users/ellio/Downloads/DFU_SA11S1_Final_Eng.pdf
service manual
https://www.ebay.com/itm/Service-Manual-For-Marantz-SA-11-S1/254825425118?hash=item3b54c768de:g:RfQA...
you might find a free download somewhere
file:///C:/Users/ellio/Downloads/DFU_SA11S1_Final_Eng.pdf
service manual
https://www.ebay.com/itm/Service-Manual-For-Marantz-SA-11-S1/254825425118?hash=item3b54c768de:g:RfQA...
you might find a free download somewhere