Yamaha AVR owners thread

[manishsachdev]

I tried with 750 watt step down converter, but was unable to start the Yamaha RX-A840 AV receiver, trying with 1 KV step down converter is my last resort.

Can anyone suggest, from where can i get this start up problem resolved, are there any yamaha service centers .. how much charges do they take etc.

Since I have bought this in US and it has 3 years warranty, but that would not be valid in India. Has anyone faced such problems before, if yes, then would appreciate to suggest the steps taken to resolve it.


Regards,
Manish Sachdev

I found 3 Yamaha Service Centers in Mumbai.

1)
SAHAKAR ELECTRONICS
SHOP 1 & 2, GAGAN TARA, PESTOM SAGAR ROAD NO. 2, AMAR MAHAL, CHEMBUR, MUMBAI-400089

2)
Lazor Electronics
A-1 Silver Bell Society, S.B Marg, Near Saidev Hotel
Mumbai - 400069 Maharashtra


3)
Emission Electronics
76/612, Motilal Nagar No-1 Behind Post Office,Goregaon (W)
Mumbai - 400104 Maharashtra


Any suggestions or experiences, which one of them is the best?

Regards,
Manish Sachdev

 

[kneo]

Need some urgent help.

My Yamaha 473 is not turning on. On switching the main power supply, the red standby light comes on. But when I try to switch on the receiver using the remote or the main unit's 'Standby' button, the red light just blinks 5-6 times and then remains steady i.e. in standby mode. As per the manual apparently the protection circuitry is activated, but I am really not sure why that should be the case, as I have not touched the connections and we don't really get any power fluctuations.

 

[kneo]

Need some urgent help.

My Yamaha 473 is not turning on. On switching the main power supply, the red standby light comes on. But when I try to switch on the receiver using the remote or the main unit's 'Standby' button, the red light just blinks 5-6 times and then remains steady i.e. in standby mode. As per the manual apparently the protection circuitry is activated, but I am really not sure why that should be the case, as I have not touched the connections and we don't really get any power fluctuations.

This is extremely strange. Thanks to this thread on our forum, I too tried this on my 473 and the receiver finally turned on. I did not understand why this happened though.

Plug the power cord out. Plug it back in.
Press the following three buttons at the same time for 5 seconds:
Power key (1) + Info Key (4) + Tone Control key (12) (The numbers in bracket are as per front panel picture given in manual at page 7)
And Voila, The receiver switched on. (I did this after disconnecting all the speaker, HDMI and all other cables)

 

[prabhrag]

Hi all,

I recently purchased a Yamaha RX v477 and LG 42LB5820. I'm unable to get the TV audio output (source TV USB) through my AVR to the speakers. I'm using the following cable

Amazon.in: Buy BlueRigger High Speed HDMI Cable with Ethernet 6.6 Feet (2m) - Supports 3D and Audio Return [Latest Version] Online at Low Prices in India | BlueRigger Reviews & Ratings

which i believe is ARC compatible. I've connected HDMI (ARC) TV to HDMI OUT of the AVR.

Am i missing something in the setup. Can you guys help me out :sad:

I'm also attaching snapshot of the audio settings of both AVR and TV

 

[Kannan]

Yamaha RX-V671 -
can it be run it as a digital sound processor for an active setup

Following is the manual adjustment possible in the 'Parametric Equalizer Setting Section' as taken from the user manual


Quote
Manual equalizer adjustment

1. Set PEQ Select" to Manual and press ENTER.
2. Use the cursor keys to select a speaker and press ENTER.
3. Use the cursor keys to select an item and press ENTER.
Band Gain: You can select a center frequency from the preset 7 bands and adjust the gain.
Freq. / Gain: You can adjust the center frequency of the selected band and adjust the gain.
Q Gain: You can adjust the Q factor (bandwidth) of the selected band and adjust the gain.
Clear: Restores the default settings for the selected speaker.
4. Use the cursor keys to adjust parameters and press ENTER.
Setting range
Gain: -20dB - +6dB (0.5dB steps)
Center frequency: 31.3 Hz 16 kHz
Q Factor: 0.5 to 10.08

Unquote

Does this mean that for each speaker I can set the frequency band, for example if I connect the tweeters to the left and right surround speaker terminals, I can set the parametric equalizer for these channels to be fed only the higher frequencies. Is the 'Q factor' same as slope adjustment?
Similarly if I connect the midrange to say Front left and right speakers, can I bandpass it between certain frequencies so on and so forth.

 

[manishsachdev]

I found 3 Yamaha Service Centers in Mumbai.

1)
SAHAKAR ELECTRONICS
SHOP 1 & 2, GAGAN TARA, PESTOM SAGAR ROAD NO. 2, AMAR MAHAL, CHEMBUR, MUMBAI-400089

2)
Lazor Electronics
A-1 Silver Bell Society, S.B Marg, Near Saidev Hotel
Mumbai - 400069 Maharashtra


3)
Emission Electronics
76/612, Motilal Nagar No-1 Behind Post Office,Goregaon (W)
Mumbai - 400104 Maharashtra


Any suggestions or experiences, which one of them is the best?

Regards,
Manish Sachdev

Any suggestions, about which of the above service centers are best?


Regards,
Manish Sachdev

 

[Srinath_seshadri]

I have owned several yamaha AVR's, just nothing with HDMI.
I currently own a DSP 3090 and I will never give that one up.
I am using a RX-v1000 right now, but its going to be sold pretty soon, its just a testing rig. Pretty good, excellent tuner, great sound, just that I like the 3090 a little bit more.
I have owned and repaired 100's of them. All the way from a CR2020 to an RX-V1. No experience with yamaha HDMI receivers, never had one of those.

I also will look into what models have an internal conversion to 220 the next time I crack one of these open and how hard to convert to 220 internally. That way is better. In fact the best way is via a switch. That the manufacturer should have provided. But lots of these are internally convertible.

Cool.
Srinath.

 

[Rohith]

Hi guys,
I'm the new addition to yamaha family, recently bought a yamaha rx v375 from amazon.com and a friend of mine carried it for to india. My problem here is do i need a step up voltae converter to use this receiver in India. i had this doubt so I din't switch it on till now. so i wanted to make this thing clear before i switch it on. I'll be glad if anyone can shed some light on this issue.

 

[jagdish_p]

DONT switch on with out a step down transformer.

Transformer Specs:

Input 220 V, Output 110 V, wattage Min 500 w will work

 

[Srinath_seshadri]

Many many many of these can be internally converted. I have looked into some of em and even done a few. I dont know about that specific amp, but pull the covers off and post a picture of the left rear corner - the one with the transformer and the boards that are soldered to it.
Or let me get a couple pics of one that has an easy conversion.
Cool.
Srinath.

 

[jagdish_p]

@sreenat seshadri

Could you please list the steps for conversion with pics if possible

Will help a lot of FM s like me to follow
Thanks

 

[Srinath_seshadri]

I'll take a picture of my NAD T 742, that can be converted. My NAD T 762 can not be converted internally. I cant convert any of these, cos I dont have 220 easily accessible. So I convert these and then I cant plug it in. I converted a Onkyo TX SV 909 a few years ago as well.
The basic logic is this.
The main transformer has a winding. There is lets say 110 v winding primary for 110v operation. The manufacturers of the transformer usually put a 220 turn winding for 220v operation as well. The basic idea is that if 220 was needed, they run to that 220 turn winding. The rest of the amp stays the same, the fuse is 1/2 the value, and may be in a different slot, but the rest is the same.
I'll show with pics of this NAD T 742.
Sadly its got 1 dead channel, else I'd convert it and test it with someone who has a 220 supply around here.

Also Look in the schematics of a Yamaha DSP A-1. It has a 220 option too.

Cool.
Srinath.

 

[rahuln]

I'll take a picture of my NAD T 742, that can be converted. My NAD T 762 can not be converted internally. I cant convert any of these, cos I dont have 220 easily accessible. So I convert these and then I cant plug it in. I converted a Onkyo TX SV 909 a few years ago as well.
The basic logic is this.
The main transformer has a winding. There is lets say 110 v winding primary for 110v operation. The manufacturers of the transformer usually put a 220 turn winding for 220v operation as well. The basic idea is that if 220 was needed, they run to that 220 turn winding. The rest of the amp stays the same, the fuse is 1/2 the value, and may be in a different slot, but the rest is the same.
I'll show with pics of this NAD T 742.
Sadly its got 1 dead channel, else I'd convert it and test it with someone who has a 220 supply around here.

Also Look in the schematics of a Yamaha DSP A-1. It has a 220 option too.

Cool.
Srinath.

I know this is yamaha thread but can you comment on HK AVR-635 for conversion? It will be a huge help for me.

Thanks.

 

[Srinath_seshadri]

Rahuln: Sorry I have only opened up 1 HK - an AVR 7000 ,and it didn't end well. Its still dead. I never looked into the conversion.
But pull up the schematics, if it says somehting about 220 v this part and that part etc etc, you can convert it, probably by just swapping out the parts specified - I'll try to look and post back in a bit.
Cool.
srinath.

 

[Srinath_seshadri]

Also I want to say a toroidal trafo is unlikely to be dual voltage. My avr 7000 was a toriod. Toroids are hand wound, and hence a bit better. The cost of a hand wound unit will double when you have to do double the work and materials.
The EI cores tend to be machine wound, and machine wound for a 220/110 winding may take a few extra seconds and 2 X the material, but its cost will increase by 10-30%. So I would guess toroidal trafo = single input voltage. EI - you have to look and see if it has dual.

Cool.
Srinath.

 

[Rohith]

thanks jagdish,
but i want to know that whether my particular receiver i.e. yamah rx v375 has a dual voltage or i need a converter specially for it. Anyone already having some experience with rx v375 can help me

 

[Srinath_seshadri]

I was unable to pull up schematics of the rx-v375, so do this.
Open the cover of the amp and look in the left rear corner - look for things that say 110 or 220.
Also look for the trafo input side pins and see if there is an extra pin, and more than likely say the 3 pins are spaced like this "1----------2----------3" - you'd find pins 1 and 2 will be used, but pin 3 may not be connected to anything. It will be sodered to a board, but not be electrically going anywhere.
I got pics of the NAD, but its very hard to see it, I'll get it on my laptop tonight and post a few pics.
Cool.
Srinath.

 

[adi_vastava]

I recently sold mine RX-V373 and bought a RX-V475. Just thought to dump the differences.

I am really liking the ability to connect to network and play flac from USB. Not sure my ears can tell the difference of discreet amp though. Additionally there is a USB out (for power) at the back; using that as power source for chromecast. Another addition is HDMI pass through.

(I was very close to buy 675; but it would have been overkill as I do not need 7.2 or dual zone.) Plus I actually saved money this time in this upgrade . (Sold in India, bought in US).

 

[jagdish_p]

thanks jagdish,
but i want to know that whether my particular receiver i.e. yamah rx v375 has a dual voltage or i need a converter specially for it. Anyone already having some experience with rx v375 can help me

Check your manual or the back of the receiver. If it is capable of accepting 220 v there will mention it as Input Voltage : 110 v to 220 v.

Alternatively some sets have a selector switch for voltage at the back.
I do not think Yamaha has any of these

 

[Srinath_seshadri]

Check your manual or the back of the receiver. If it is capable of accepting 220 v there will mention it as Input Voltage : 110 v to 220 v.

Alternatively some sets have a selector switch for voltage at the back.
I do not think Yamaha has any of these

Not always. If its internally going to need de-soldering and soldering, then it will probably not say that. I will look in the nad T742 tomorow, its a blood freezing 15 degrees F now in the garage.

Cool.
Srinath.