110v to 240v on yamaha rx-v661??

[bafroggy]

does anyone knows how to convert to 240v on the yamaha rx-v661??

 

[mtrycrafts]

does anyone knows how to convert to 240v on the yamaha rx-v661??

If there is not a voltage selector on the back, you need a step-down or step-up transformer of sufficient amp rating to handle the load.

 

[TLS Guy]

If there is not a voltage selector on the back, you need a step-down or step-up transformer of sufficient amp rating to handle the load.

May be there is a 240 volt tap on the mains transformer and a service tech could change it for him?

 

[jamie2112]

Step down or step up transformer is a really expensive way to do that I would take it to a audio shop and have them covert it for you.

 

[mtrycrafts]

May be there is a 240 volt tap on the mains transformer and a service tech could change it for him?

Would that be a standard practice for Yamaha to place such transformers in all their units regardless where it is destine for?
I have a feeling the op is moving to another country perhaps, or bought it here and he is overseas?

 

[mike c]

Would that be a standard practice for Yamaha to place such transformers in all their units regardless where it is destine for?
I have a feeling the op is moving to another country perhaps, or bought it here and he is overseas?

nope. if ANY common brand receiver in the US had that switch, i'd have bought some already.

 

[TLS Guy]

Would that be a standard practice for Yamaha to place such transformers in all their units regardless where it is destine for?
I have a feeling the op is moving to another country perhaps, or bought it here and he is overseas?

A lot of equipment has a mains transformer that has multiple voltage taps in the primary. There is usually no switch now, that Mike talks about, but there are frequently taps, and the wires can be soldered on to different terminal on the transformer. A circuit or service manual will tell you.

Unfortunately quite a lot of the time the units have different mains transformers for different countries, in that case the power transformer has to be changed, that is expensive and a lot of labor.

One other thing, if you are moving between North America and Europe, The time constant of the FM de-emphasis needs changing also. In Europe it is 50 msec and in North America 75 msec. It is usually a matter of changing one cap. A tuner set to 50 msec will sound very bright in North America. And one set to 75msec lacking HF in Europe.

 

[Rickster71]

A lot of equipment has a mains transformer that has multiple voltage taps in the primary. There is usually no switch now, that Mike talks about, but there are frequently taps, and the wires can be soldered on to different terminal on the transformer. A circuit or service manual will tell you.

Absolutely; you can't swing a cat without hitting a multi-tap transformer.