Boston PV1000 Diagram

[tubenut]

Anyone have a working plate amp for this unit they could check or a service manual?
Need details on "Z7" to repair a unit.

Any help appreciated.

 

[speaker]

Anyone have a working plate amp for this unit they could check or a service manual?
Need details on "Z7" to repair a unit.

Any help appreciated.

Have you tried the factory?