<![CDATA[iFixit - Answers With Device "Yamaha DGX-640"]]> https://www.ifixit.com/Answers/Device/Yamaha_DGX-640?rss=yes en-US Sun, 19 Jul 2026 01:30:20 -0700 <![CDATA[Yamaha DGX-640: Piano Keys very low volume]]> I tried to use my old DGX 640, but it had a first issue with no sound output at all. Referencing https://www.youtube.com/watch?v=PLPNpbFG... , I had the similar faulty capacitor C207. After replacing it, my piano how has normal volume audio output for all pre-sets, metronome, etc. However, any sound generated from the keys themselves are extremely soft. The volume of the keys when set to 100% output is as loud as the metronome at 10% volume. I'm not too sure what else I should try to check next to rectify the low volume from the keyboard itself.

⟐ Commented September 18, 2025 at 5:49 MST

]]> https://www.ifixit.com/Answers/View/851964/Piano+Keys+very+low+volume https://www.ifixit.com/Answers/View/851964 Thu, 18 Sep 2025 05:49:02 -0700 <![CDATA[Yamaha DGX-640: distortion when some keys are pressed at the same time]]> when I press certain keys at the same time the higher key sounds off pitch

⟐ Answered December 19, 2024 at 13:28 MST

]]> https://www.ifixit.com/Answers/View/880986/distortion+when+some+keys+are+pressed+at+the+same+time https://www.ifixit.com/Answers/View/880986 Thu, 19 Dec 2024 13:28:43 -0700