My daughter got a SK560 Keyboard as a present and we cant get the volume to work

If the volume wheel on your Casio WK-200 keyboard is spinning all the way around and not stopping at the "min" or "max" positions, it is likely that the potentiometer that controls the volume has become faulty or damaged. A potentiometer, or pot for short, is a type of variable resistor that is commonly used to control the volume on electronic devices.
Here are a few troubleshooting steps you can try:

1. Power off your keyboard and unplug it from the power source.
2. Remove any batteries from the battery compartment.
3. Locate the volume potentiometer inside the keyboard. It should be near the volume wheel and will have three pins or legs.
4. Check the potentiometer for any visible signs of damage, such as cracks or broken pins.
5. Gently wiggle the volume wheel while observing the potentiometer. If it appears to be loose or wobbly, it may need to be replaced.
6. If you have experience with electronics and soldering, you may be able to replace the potentiometer yourself. Otherwise, it is recommended that you take your keyboard to a qualified service technician for repair.

If the issue persists after attempting these troubleshooting steps, it is likely that the potentiometer needs to be replaced. In any case, it is best to seek the assistance of a professional technician to avoid causing further damage to your keyboard.

If the on/off button on your Yamaha PSR-S750 keyboard is not working, there could be a few possible issues. Here are some things you can try to troubleshoot the problem:

Make sure that the keyboard is properly plugged in and that the power switch is in the "on" position.
If the keyboard is plugged in and the power switch is on, try unplugging the keyboard and plugging it back in to see if this resolves the issue.
If the keyboard still does not turn on, try using a different power outlet or a different power cord to see if the issue is with the power source.
If the keyboard still does not turn on, there may be a problem with the on/off button itself or with the keyboard's internal electronics. In this case, you may need to contact Yamaha for further assistance.
As for the issue with some notes being too loud, there are a few potential causes:

Make sure that the volume of the keyboard is set to an appropriate level. You can adjust the volume using the volume control knob on the keyboard or by using the volume control on your amplifier or speakers (if you are using them).
Some notes may be louder due to the way they are played or due to the settings on the keyboard. You can try adjusting the touch sensitivity or dynamics settings on the keyboard to see if this makes a difference.
If the issue persists, it is possible that there is a problem with the keyboard itself. In this case, you may need to contact Yamaha for further assistance.

The issue you are experiencing could be related to a few different things. Here are some things to check:

1. Check the cables: Make sure the cables you are using to connect your keyboard to the mixer are in good condition and securely plugged in. Sometimes a loose connection or a damaged cable can cause issues with the volume.
2. Check the mixer: Make sure the mixer is set up correctly and the levels are adjusted properly. If the mixer is overloaded, it can cause issues with the volume.
3. Check the keyboard settings: Make sure the keyboard is set up correctly and the levels are adjusted properly. Some keyboards have settings that can affect the volume output.
4. Check for interference: Sometimes interference from other electronics or electrical sources can cause issues with the volume. Try moving your setup to a different location and see if that helps.

If none of these solutions work, it may be a hardware issue with either the keyboard or the mixer. In that case, it may be best to consult with a professional technician.

You left off the one bit of info we need... however, make sure the volume control on the keyboard is around the halfway point... If it is way down, turn it up and reduce the channel volume knob some. Make sure the cable from the keyboard is an instrument rated interconnect and not one intended for speaker (usually marked as such). Make sure the keyboard AND this amp are powered from the SAME receptacle... even if you have to run an extension cord. Listen with headphones on your keyboard to make sure the sound is clean there.

Just tried it on mine- use the volume fader to get sounds back

If the power goes off when you plug in the pedal, the pedal LIKELY has a short in it between two of the three connections at the plug.

Firat, try putting the pedal plug in BEFORE applying power.

Likely the pedal presents a pot or volume control that will have like 5 volts across it an the wiper returned on the same cable. If the wiring configuration is wrong OR if the plug goes through a period of shorting the 5 volts out during insertion that will cause a problem...

To troubleshoot, move the pedal to half way and these with an ohmmeter for shorts between ANY two of the three connections.

You can obtain these from Yamaha Music Spares Dept in your country.

Go to the following Yamaha site link and choose your country

http://www.yamaha.com/

Select Musical Instruments - Support and the contact details will be displayed.

I just used them to by some parts for a Clavinova and they were in stock, accepted credit cards and delivered within 24 hours.

It sounds like your volume slider is dirty. Try carefully and judiciously spraying a good quality contact cleaner into the slider and working it. do not use a lot. It only takes a little. Also do not use WD40.

Try running a line out from your keyboard to the line input on your mac. Go into system preferences, select sound, click the input bar in the upper right corner, select line in/Audio line-in port, then adjust your input volume. You should then be able to record from your keyboard. If this doesn't help you, please let me know. I'm a recording engineer that uses a MacBook for all my multi-track recording projects. Thanks & good luck. Mark

Yes spray some contact cleaner into the switch while unit is off. move it back and forth spray a little move. dp this a few times. this will clean it up and it should work better. Get this stuff a Radio Shack. $8.00 a can. I use this stuff on all kinds of electronic;s. Like a stiskiy keyboard button, so forth.
Good luck DFD