Circuit diagrams and service manual for Rotel RTC-850?

[GJF]

I've been sold a dud and wonder if anyone has the manuals/circuit diagrams for this that they would be willing to copy to me?

Unit powers on but will not select inputs. When holding the tuner selection button in continuously the display lights and it will tune but all else appears dead.

Any help appreciated.

Gary.

 

[docfin]

Check power supply of amp section, probably you have blowned fuses.

 

[GJF]

Problem solved.

3 pence resitor in the power supply feeding a zener gone o/c.

 

[Atsalright]

This is an old post, but seem to have exactly the same problem today... any chance anyone would know which resistor fixed this issue? 😕

 

[kct]

Have a look here.

ROTEL RTC-850-850L SM Service Manual free download, schematics, eeprom, repair info for electronics

 

[Atsalright]

Thanks for the quick reply! I grabbed the manual, but none of the resistors seem burnt. Was hoping for some guidance on which resistor the original poster swapped out.

 

[kct]

NP, well may be it is not a failed resistor this time.

Measure the PS voltages to zero into the area of trouble or PM the original poster, may be he remembers what he did.