The stand the piano comes with might not be the best, but that can be fixed easily. Make sure that nothing is connected to the headphone jack. Owner of Winston Electronics, Servicing music electronics for over 50 years. No sounds. For everything you get from this, the price is affordable. [NOTE] This operation may delete the backup settings and data saved in the instrument’s user memory depending on the model. Whether you can fix it yourself depends on how much electronic testing knowledge and basic test equipment you have, e.g. Everything seemes to. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Repair and disassembly guides for electronic keyboards. I’ve plugged and unplugged everything, and there’s no sound at all. Yamaha’s DGX-640 was designed to be as close to a piano as a Portable Grand can be with its 88-key weighted Graded Hammer Standard keyboard action and wide selection of piano voices. Be patient, it takes a little while to find the file. If not you have to go back further in the audio output circuit. Can I fix this myself? Now there is no sound when I … [])), +((!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+(!![])+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]-(!![]))+(!+[]+(!![])+!![]+!![])+(+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![])+(+!![]))/+((!+[]+(!![])+!![]+[])+(!+[]+(!![])+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![])+(+!![])+(!+[]-(!![]))+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!! While holding down the white key on the right end (C7), press the standby/on switch to turn on the power to this instrument. If so that is a start as it shows that power is available, to some boards at least. Check out all the great Yamaha DGX640 reviews! This is due to the advanced technology and the innovative sound engine of Yamaha, the sounds of the Yamaha Portable Grand DGX 640 is great. Yamaha shall not provide you with any service or maintenance as to the THIRD PARTY SOFTWARE. [])), +((!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+(!![])+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![])+(!+[]-(!![]))+(!+[]+(!![])+!![]))/+((!+[]+(!![])+!![]+[])+(!+[]+(!![])+!![])+(!+[]+(!![])-[])+(!+[]+(!![])+!![]+!![]+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![])+(!+[]+(!![])+!![]+!![]+!![]+!![])+(!+[]+(!![])+!![])+(!+[]+(!![])+!! I have a yamaha dgx-640. I have a yamaha dgx-640. if so that is even better as it shows that most of the audio circuit is working. The Yamaha DGX 640 is a great digital piano which has absolutely great key action and acoustic sounds. I've taken the troubleshooting steps in the manual but still no sound either in headphone or keys … read more Back to the List.

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