Thx for the replies. I am actually hoping to find a service manual as opposed to the owners manual. The model in question is an HPA 2 that has the dreaded "locked in standby" that is very common to the HPA series.
My tech. has thus far not been able to locate any circuit diagrams as they are hard to find.
My tech. has thus far not been able to locate any circuit diagrams as they are hard to find.