SAP Audio - - Orphaned equipment?

I purchased a SAP Anniversary Line Stage last year. Quite happy with the sound but it recently has been malfunctioning and requires service. None of the contact information for the dealers seems to be current and there is no longer any web page information on the company. I need to be able to access a schematic and a parts source at minimum, but I fear the company and dealerships no longer exist and I am stuck with an orphan. Can anyone help? Thanx.