Running a U.S. bought Yamaha TSR‑7850 (120 V, 60 Hz) on Indian 220 V, 50 Hz mains - is it safe?

[abhipandu]

Hey folks,

I brought my Yamaha TSR‑7850 AV Receiver from the U.S. in 2023 (originally bought in 2018) and haven't set it up yet, but now i'm planning to setup and use in India. Specs: 120 V, 400 W, 60 Hz. Indian mains: 220–240 V, 50 Hz.

I’m considering a step-down transformer
( Axvolt Crysta 1000 W (220 V → 110–120 V)) but I’m worried about the frequency mismatch. The Yamaha manual says 60 Hz, and it seems to have a transformer-based internal power supply.

Questions:

1. Can I safely run it on 50 Hz with a step-down transformer, or will it overheat/damage the receiver?
2. Has anyone successfully run a U.S. 60 Hz Yamaha AV receiver in a 50 Hz country?
3. If not, are there affordable 50 Hz → 60 Hz converters (~400 W) that actually work for AV gear?

Should I risk it, or just sell this unit and get a 50 Hz-compatible version locally?

Any advice or experiences would be amazing. Thanks!

Note: I'll be using Harman Kardon HKTS 16 in my setup if that matters.

 

[buxx]

From Gemini:

• Most Likely to Work (Modern Electronics): AV equipment like TVs, chargers, laptops, and most modern audio receivers use a switching power supply that converts AC to DC internally and is generally indifferent to the frequency difference. They will work without a problem.

 

[skumar]

I have done the same (but with older version of Yamaha AVR) for 10yr without any glitch. Just ensure that your voltage transformer is of good quality and has low-high voltage auto cut-off feature and with a time delay for power-cuts.

 

[mshifi]

Hey folks,

I brought my Yamaha TSR‑7850 AV Receiver from the U.S. in 2023 (originally bought in 2018) and haven't set it up yet, but now i'm planning to setup and use in India. Specs: 120 V, 400 W, 60 Hz. Indian mains: 220–240 V, 50 Hz.

I’m considering a step-down transformer
( Axvolt Crysta 1000 W (220 V → 110–120 V)) but I’m worried about the frequency mismatch. The Yamaha manual says 60 Hz, and it seems to have a transformer-based internal power supply.

Questions:

1. Can I safely run it on 50 Hz with a step-down transformer, or will it overheat/damage the receiver?
2. Has anyone successfully run a U.S. 60 Hz Yamaha AV receiver in a 50 Hz country?
3. If not, are there affordable 50 Hz → 60 Hz converters (~400 W) that actually work for AV gear?

Should I risk it, or just sell this unit and get a 50 Hz-compatible version locally?

Any advice or experiences would be amazing. Thanks!

Note: I'll be using Harman Kardon HKTS 16 in my setup if that matters.

You can use it with 230v, 50 hz without any problem

 

[shekarwrites]

I have done it with my Onkyo receiver for 12 years.. with no problems at all.

 

[LBRS]

I have done with a Denon receiver for about 7 years and then a Peachtree Nova amplifier for 6 years with a 110V step down transformer without any issues. I used Maxine