Re: Volume varies by itself on the Yamaha htr5840...
The pod that controls the volume knob is either very dirty or needs replaced! (If you remove knob you will see the shaft of the volume pod go into the pod itself) You may try cleaning with a can of high pressure air by spraying short bursts of air in and around the pod area! If that doesent work you will have to replace the volume pod!...Please rate my response! Thank You!
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hi i have the same problem. yamaha rx-v870 with a remote control that works perfectly except for the volume up/down. i pressed the buttons for a minute and applied some lemon gunk remover liquid and this helped for a very short period. i am wondering if the problem is with the little motor inside the receiver that rotates the volume knob itself, as opposed to an infrared problem on the transmitter/receiver.
I had the same problem with HDMI input to the RX-V373 from a DirecTV receiver. The RX-V373 volume display and menus on the screen are HD only, which forces the monitor to switch modes when viewing SD.
My solution was to turn off 480i and 480p signals from the DirecTV receiver, and also turn off its native output. The DirecTV receiver then upconverts SD signals to HD. Changing RX-V373 volume then doesn't affect monitor video mode.
You could have done a very slow damage to the Yamaha if your UPS was not a pure sine wave type ( on line UPS ). Most of the UPS we get are called Off line type and are far cheaper than the On line pure sine wave type. The out put of the Off line type UPS is not a sine wave ( the natural waveform of AC voltage ) and strains the Power supply circuit of any device connected to it. Now if the humming sound is the same irrespective of the volume position, it is a power supply problem. You might be having a leaky rectifier diode or capacitor. First change the diodes and see if its ok then change the main filter capacitors too.
I have a Korg C-15s and also experiencing loud crackling sounds when I turn it on. The problems seems to be either the sliding volume control or the amplifier itself. Honestly though, I believe the issue is the volume control. I opened my piano to get a closer look and attempted to clean the contacts on the volume. Unfortunately after cleaning the contacts, the crackling sounds became somewhat worse. After I turn the piano on, the volume control is generally rendered useless......volume set to low volume and the noise is quite loud and other times the volume control is set high and get very low volume crackling noise. No real consistency. The noise does diminish after a few minutes but so does the piano sounds to an inaudible level. There were a couple of instances where I turned it on and surprising enough, no no noise and perfect sound. For these reasons I believe the issue is within the volume control and not so much the amplifier. I have an electronics background and noticed that the volume control is very unique in design and is not something that can be substituted with another volume control from other sources.
My recommendation is to check the sound quality of the audio from the RCA L/R audio outs on rear of the piano by connecting to a stereo receiver. If it sounds fine you're in luck. If the crackling sound does not diminish after a few minutes like mine does, I would suggest disconnecting the internal speakers and using the audio out only. You can connect a pair of studio monitors or high quality computer speakers, preferably with a small subwoofer to deliver the full audio range and deeper tone of a real piano. I'm currently using a basic pair of Logitech computer speakers and is quite acceptable until I can afford a high quality set of monitors or relocate my piano closer to my high quality Yamaha receiver.
It's just "Digital Audio" vs "Analog Audio" You can use the "Volume Offset" function in the receivers "Main Menu" to compensate for this. Go into the menu then go to audio and or input settings and you can adjust the offset and lock it in. If you still have a problem, post a comment and I can help you some more. There is not a "problem" it's just the way the audio is transmitted. Like when your watching TV and a commercial comes on and BLOWS you out of the room. That's going from clean digital to noisy analog.
First, NEVER turn the volume all the way up to see what's wrong. If HALF volume doesn't work you're only risking a catastrophic speaker blowout if you should suddenly flick the switch that's causing the problem with FULL volume on.
Look for the MUTE or Volume +/- controls on the remote and indicators.
Try putting amp to zone 2 go to set up menu for "variable" volume adjust and turn down the volume with the remote control volume buttons or use the volume control on the amp,this should work,i had the same problem with a YAMAHA amp and this worked.
Do you have the volume at -5dB when listening to source 1? That would in most cases be far beyond the receivers capabilities when listening on an average loud recording from a standard source. I would guess that your source has a way to low signal.
However, i assume the answer to the question is this: There is a way to trim the levels of each source (Input). It can be adjusted -6dB to +6dB. Select the input you want to adjust. Hit Set Menu on the remote. Then Manual Setup -> Input Menu - > Volume Trim. Adjust up or down. In your case adjust your source 1 to + 6dB and all other inputs to -6dB.