didn't use it for a while more than 6 months. Giving the button a rub with a cloth and alcohol rubs away the perished rubber and exposes fresh conductive material. The rubber is impregnated with a conductive material, but after time the rubber deteriorates and the conductive material is no longer effective. These type of rubber black buttons are found in TV remotes, cordless phones etc and the remedy is the same. Use this opportunity to clean out dust and fluff from the area. Make sure all the membrane sits flat(very important). allow a few minutes to dry and reassemble taking care to carefully lay the rubber membrane back into position correctly. I also wiped over the PCB contacts gently with the alcohol and cloth. I am an electronics tech and the first thing I did was remove the rubber keypad membrane and give the little "black" buttons attached to the rubber membrane a firm quick rub with a cloth with alcohol(or methylated spirits will do). I was given one of these keyboards for my 9yo Daughter. I hope this information helps you to resolve the issue with your Yamaha keyboard. They will be able to diagnose and repair the problem for you. In this case, I recommend contacting a Yamaha authorized service center in your area for further assistance. If the above steps do not resolve the issue, it may be a problem with the key contacts or circuit board. Try switching to a different mode or resetting the keyboard to its default settings to see if this resolves the issue.Ĥ. In these modes, some keys may be assigned to different voices or functions. Check if the keyboard is in Split or Dual mode. To check the Local Control setting, refer to the owner's manual of your keyboard.ģ. If the Local Control mode is turned off, the keyboard may not respond to the keys. Check if the keyboard is in Local Control mode. If this is the case, try cleaning the affected keys with a soft brush or compressed air.Ģ. Sometimes dirt, dust, or debris can get lodged in between the keys, preventing them from making proper contact with the circuit board. Check if the keys are physically stuck or damaged. Here are a few steps you can take to troubleshoot the issue:ġ. If a few keys on your Yamaha keyboard are not working, it's possible that there may be a problem with the key contacts or the circuit board that controls the keyboard.
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