Location intern battery cr 2032 yamaha psr 540

Question edited for clarity. 'make model (what it is), first 3 words.

Here

https://www.fixya.com/support/t29944524-could_problem_psr_333_yamaha_keyboard

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If your Yamaha PSR-2000 keyboard is turning on and the blue backlight is displayed on the screen, but none of the function keys are lit up and not responding, there may be a few different causes.

1. Check if the power supply is working properly and is providing enough power to the keyboard. If the power supply is faulty, it may not be providing enough power to the keyboard.
2. Make sure that the keyboard's internal battery is charged. If the battery is low, the keyboard may not function properly.
3. Check if the internal fuse of the keyboard is not blown, which is a common problem on electronic devices.
4. If none of the above steps work, the problem may be with the control board or the display, and the machine may need to be serviced by a professional technician.

I would recommend checking the user manual or contacting the Yamaha technical support for further assistance, as they may have specific troubleshooting steps or solutions for your model.

It could just be a glitch, or a low battery, or a power supply problem.

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If the power adapter is not the original adappter- check to make sure the polarity is correct- it should be marked on the keyboard near the adapter socket, and also on the adapter itself.

The keyboard should have an internal fuse- check that. Then with keyboard open, if the fuse is okay, trace the power flow from the power pack and look for broken wires, bad solder connections, stressed components like bulging capacitors, etc. It may have a burned out zener diode in the power supply regulator portion of the main circuit.

Hi,

You can download the complete instruction manual in PDF format by clicking this link.

• You'll require Adobe PDF Reader installed on your computer to view the manual. If it is not already installed on your computer, download it free from: http://get.adobe.com/reader/

Hope this solves your problem. Thanks for using FixYa.

My keyboard yamaha psr2000,so I want parts silicone rubber keypad 61 and including electronic board,thank you.

If it is very old, check if the volume control could be contaminated. Make sure a voice is selected via the buttons.

Do try the headphones before anything further.

Wild guess of possibilities.

1. Internal backup battery exhausted.

2. Button OR key is stuck down, either mechanically or electrically.

usually its a standard lithium cell cr 2032 which you can find anywhere