Schematics wanted for these recievers

[gain]

Make: RCA
Model: VS4000/W

Make: Kenwood
Model: KR-V6080

Make: Yamaha
Model: R-50

Make: Bose
Model: 1801

Make: Realistic
Model: STA-850

looking for service manual/schematics/literature on the above. any reasonable price will be paid. also any comments or suggestions from those with experience repairing and/or using these receivers are more than welcome.

many thanks!

 

[erikb]

http://electronics-diy.com/pdf/Bose_1801_Power_Amplifier.pdf

Sorry for the late reply, i just registered 🙂.

 

[motfinoski]

Any activity in repairing your Yamaha R-50 since this posting?