Yamaha DGX 650 and DGX 670 Sometimes Sound Out of Tune

by Ed Springer
(Hammond, LA, USA)

I've had my Yamaha DGX 650 for approximately 5 years. I've had my DGX 670 for about a month. A common problem of both is sometimes when I start the instruments, they sound out of tune.


I'm told that an electronic piano cannot be out of tune. I can assure you something is going on to "give the effect" of it being untuned. I've had decades of musical training. I can quickly distinguish tuned and untuned instruments and voices.

When I restart the pianos, sometimes they sound normal. If they don’t, I continue to restart ultimate they do.

I'm about ready to return the DGX 670 to the dealer. They have a 45-day return policy. BUT I DON'T WANT TO DO SO.

Any suggestions?

Comments for Yamaha DGX 650 and DGX 670 Sometimes Sound Out of Tune

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Dec 09, 2023
Rating
starstarstarstarstar 		DGX 650 one step out of tune NEW
by: Steve

I'm glad I am not the only one with this problem. I compared the tuning of my DGX 650 to our acoustic upright piano that we just had tuned and the 650 is definitely off one step. A key tuned to G key etc. Can't find any fix at all on the internet.
Sep 21, 2023
Rating
starstarstarstarstar 		DGX 670 out of tune NEW
by: Pepper

I was glad / frustrated to see the other comments on this page about the DGX 670 piano being out of tune. It absolutely is.
Jul 20, 2023
Rating
starstarstarstarstar 		Rip off NEW
by: Anonymous

I would say never buy anything again from Yamaha anything.
Jul 14, 2023
Rating
starstarstarstarstar 		I contacted Yamaha
by: Anonymous

I contacted Yamaha but they basically said they are sure that the notes can’t be out of tune. Because of the use of samples some technical stuff (a shift in the frequencies perhaps) can make an impression to the ear of being out of tune. They are so confident as recommending to check with a good quality tuner. They say in that way you can convince your ears it sounds good.
Jul 03, 2023
Rating
starstarstarstarstar 		Yamaha Needs to Fix This
by: Anonymous

We need a fix FROM YAMAHA. An internet search gives no remedy.
If reader of this comment has any help, please post it here. Thanks.
Apr 30, 2023
Rating
starstarstarstarstar 		Possible fix
by: Carol

I have the same issue. My piano teacher gave me the temporary fix….unplug the wire from the wall and the back of the keyboard for several minutes, then plug it back in again. It has put mine back in tune three times thus far, and it may not happen again for several weeks or months.
Apr 26, 2023
Rating
starstarstarstarstar 		Same issue
by: Anonymous

I have the same issue. My Yamaha is two months old and sounds out of tune. Especially on the left side. Restarting doesn’t help for me. So annoying!
May 18, 2022
Rating
starstarstarstarstar 		Dgx 670 out of tune NEW
by: Anonymous

Yes mine was bought 60 days ago and is a tone lower now.
Feb 01, 2022
Rating
starstarstarstarstar 		Yamaha DGX 670
by: Lacey

I bought a Yamaha DGX 670 several
Months ago and it has played perfectly in tune until today! And it’s definitely out of tune..I’m following to see if anyone knows a solution.

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