Mark Levinson Repairs

I own a Mark Levinson # 331 Power amp and recently the right output channel failed. I called ML service dept to get a quote for repairs and and was shocked when i was told they don't do repairs on this amp anymore and even if they did there are no parts available. They also told me that a 3rd party service center would not be able to help either because they will not have the schematics and they will not give it out to anyone. this was more shocking as based on this information the amp will never be fixed, i do blame myself for not doing research on this company policies prior to buying the amp if i did i would not be in this situation. I own several Mcintosh equi[tment that cost the same or less and older than the ML 331 and i have had them repaired at Mcintosh or my local tech shop i even bought the service manual for one of the amps. 

Does anyone here has the same issue and if so how did you get your amp repaired, any suggestions will be appreciated FYI when the amp was working it was excellent quality sound so the equipment is good just the service sucks !

Thanks for reading.