Discussion in 'Yamaha' started by 10sguru, Aug 13, 2018.
The coupler switch is behind the unit and is used to separate preamplifier from amplifier
The CR3020 has a built in preamp section. The coupler switch allows you to separate the power amp section from this built in preamp section in the event you wanted to use either section as a separate component paired to another power amp or preamp, at least that is my understanding. There are several Yamaha experts in this forum that can most likely expand on the disadvantages/advantages of this type of configuration.
Disassembly and cleaning / deoxiting the switch. You can try squirting some deoxit into it. But it probably won't last very long.
Thanks again for all your help Dave
Your CA-2010 has one as well.
Which also needs full disassembly and cleaning, just like the 'mode' switch (direct coupled or cap coupled)
Just like all slide switches..
And the wafer switches
As long as your in there. Cleaning all the controls and switches would be a great idea.
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