Korg Kronos 61 Keys

Please I have a Korg Kronos 61 Keyboard which distuned while it’s been played. Am a bit Keyboard tech with some experience.

Please what parts, components, diode or ic on the motherboard could be responsible for this?

Please what will you advise I do on it?

Thanks in advance for your timely replies as this is very urgent.
Am most grateful

Does the entire keyboard detune uniformly, or do different voices or keys detune randomly? If everything suddenly detunes flat by a certain amount, for instance, then I would take a look at the bender, and see if there is a problem there. You could try unplugging it completely and see if the problem goes away.

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Thanks I will definitely check that.

Yes I have done this and it stopped.

But what can I do to get to use my pitch bend again?
Because I need the pitch bend to work.

Thanks for your quick response.

I also noticed the screen not touch responsive like before again.

Please what could be the problem?