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Bose 1800 Series VI Professinal Amplifier

Hi, anyone had a Bose series VI professional amplifier schematic diagram?



Re: Bose 1800 Series VI Professinal Amplifier

Sorry don't have a schematic, but maybe I can help with some hints and tips when you need to repair. This amp is similar to the Carver PM-950/PM-1400 this lastschematic you can find in the hifiengine database and looks identical to the 1800-VI
, I repaired the Bose 1800-V and VI a lot in the past. The series V and VI were made by Carver with exception of the EQ unit in the back. Mostly the white MOC optocoupler fails on the small PCB with the big TRIAC for powering up/switching the mains transformer. When powering up a loud humm is heared out of the mainstransformer and the fuse blows some time later, this white MOC optocoupler is broken.

Re: Bose 1800 Series VI Professinal Amplifier

thanks a lot Jaap Kok for some hints and tips and of course for the schematic diagram.... cheers