I have a Yamaha DGX - 220 Keyboard. I was messing around with the regist memory buttons. I couldnt figure out how to get it back to the normal setting, so I turned it off. When I immediately turned it back on again, there was a buzzing/cracking sound coming from the speaker. This sound is here even when the volume is all the way down. Help!

Try unplugging it and also remove batteries if it has any. Then plug it back in and everything should be back to factory settings. I don't know what to to beyond that.

Just a shot in the dark but a lot of keyboards allow for splitting the keyboard in half or even in quarters to assign multiple sounds... have you tried a total reset? Or explore the manual for setting up a split keyboard. Might help.

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You can normally reset Yamaha keyboards by holding down the highest note while turning on. If you want to do a full factory reset see below - remember this may delete all songs etc you have saved to the keyboard memory.

There is a small turning button on the back of the keyboard to change the screen tone and brightness,happend to me and this fixed it,i thought mine was broken too,till i spotted it

Do you mean,"The HOUSE power went out" or, "The keyboard power went out"?

Your Yamaha DGX 203 Portable Keyboard - USB-MIDI Driver Version 1.2.2 ie. for OS Win9x/ME.

Yahama site does not have the Win7(x64) Drivers ie. USB-MIDI for your Keyboard Model DGX-203

But you can try the USB-MIDI Driver Version 3.1.0 for Windows(R) 7/Vista/XP 64bit for Model DGX-520 @ http://usa.yamaha.com/products/musical-instruments/keyboards/digitalkeyboards/dgx_series/dgx-520/?mode=model

I can't assured you that it will works on your system. Since your Keyboard is no longer in production, I doubt Yahama will provide you with the official USB-MIDI drivers for your Keyboard even you requested for it.

I guess this is an option you can try and hope it works & good luck.

Regards.

Contact Yamaha directly. Parts Consumers Support: By Phone: Monday through Friday
8:30 am to 5:00 pm Pacific Time
Tel:(888) 892-6242
After hours or weekends
Tel:(855) 322-3309

Here's a link to a third-party owner's manual
https://www.manualslib.com/manual/539184/Yamaha-Portable-Grand-Dgx-205.html

You should be able to purchase a new disk from Yamaha:

http://www.yamaha.com/yamahavgn/CDA/ContentDetail/Text_WithCatMenu_SC.html?CTID=410040&CNTYP=PRODUCT#top

Have your model and serial number available.

From Yamaha DGX 200 Manual

• Q-There is no sound even when the keyboard is played or when a song is being played back.
• A-Check that nothing is connected to the PHONES/OUTPUT jack on the rear panel. When a set of headphones is plugged into this jack, no sound is output. Check the Local Control on/off. (See page 69.)