Question about Yamaha P85 88Key Portable Digital Piano

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What is the correct procedure for resetting Yamaha P 85 Digital Pian?

Power button works keys produce sound but all other sound setting buttons do not work.; only the master volumne button works. I have to pull the electrical plug to turn off piano. Tried reset after plugging in electrical cord again and by turning on power with standby/on button while holding highest C key but did not work. Any suggestions?

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Resetting Instructions:
1) Try a partial reset by holding down the last white key while turning the unit ON.
2) If you haven't recorded any performance(s), for a full reset, hold down on the last white key AND THE lst three black keys while turning the unit ON.

Posted on Aug 04, 2015

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6ya6ya
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Posted on Jan 02, 2017

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marinelvr18
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SOURCE: Sticky Keys for Yamaha Digital Piano YDP-121

have you tried using the can of air. you can get it at almost any drug store walmart or kmart. just spray the can of air between the keys and they should become unstuck.

Posted on Dec 13, 2008

  • 909 Answers

SOURCE: Keys sticking on Yamaha p120 digital piano....how do I open it up

you may not need to open it up.
try using a wax based furniture polish on the keys, it will leave a layer to act as a lubricant between the keys.

Posted on Aug 24, 2009

  • 63 Answers

SOURCE: Yamaha P-200 electric piano does not have any

Plug in your ear phones to see if you can hear the sound that way. If not you are experiencing some internal failure in your integrated amp output.

In that case you will need to get authorised service.

Posted on Oct 06, 2009

  • 5603 Answers

SOURCE: I have a Roland HP 101 digital piano however certain dont sound

White spirit is NOT what you should use. Mineral spirit leaves a residue film.

Use 99% isoprophyl alcohol.

ALSO inspect the contactboard for cracks by candeling with bright light behind it.

Posted on Nov 01, 2009

Testimonial: "bur isnt it strange that certain keys have stopped working? ie most the A keys"

  • 5603 Answers

SOURCE: My Yamaha YDP-121 digital piano has a key that is

Check if it might be dragging on the edge of the case. The restoring force for some of these comes from a silicone rubber dome that is oart of the contact. SOMETIMES the dome fails.

Posted on Nov 29, 2009

Testimonial: "sounds good but i am a novice with repairs and do not really understand all the terms used. also, i am not sure how to go about fixing or getting repl"

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I have a Yamaha dtexpress. Very old, but works great. Except the snare sound. It is stuck on bongos. Is there a factory reset for the dtxpress?


1) Press the [UTIL] button.

2) Press the [PAGE DOWN] button until the 'Factory Set' screen appears. The message 'Factory Set' will begin flashing on the LCD.

3) Press the [SAVE/ENT] button. The LCD will display the message prompt, 'All data will be lost, Are You Sure?'.

4) Press the [SAVE/ENT] button again to complete the Factory Reset procedure.

Dec 31, 2017 | Yamaha Music

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How to factory reset my Yamaha PSR S500


According to the manufacturer, the reset procedure is documented here and on page 42 of the instruction manual:
http://faq.yamaha.com/us/en/article/musical-instruments/keyboards/digitalkeyboards/portable_keyboards/psr500/656/2085/psr500-psr500m_factory_reset_procedure
  • Turn OFF the Power.
  • Press and hold the 'Custom' [RECORD/END] and [CLEAR] buttons.
  • Turn ON the power. The screen will display 'clr'.
  • Release the 'Custom' [RECORD/END] and [CLEAR] buttons.
  • Dec 05, 2015 | Yamaha Music

    1 Answer

    What is the correct reset for Yamaha P 85 Digital Piano?


    Reset Instructions:
    1) Try a partial reset by holding down the last white key while turning the unit ON.
    2) If you haven't recorded any performance(s), for a full reset, hold down on the last white key AND THE lst three black keys while turning the unit ON.

    Jan 03, 2014 | Yamaha P85 88Key Portable Digital Piano

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    Yamana DGX 630 E keys make strange sound


    Perhaps the performance assistant technology is turned on.
    Press the [PERFORMANCE ASSISTANT] button to turn it off.

    Jan 12, 2013 | Yamaha DGX630 - Digital Piano

    1 Answer

    Rhythm accompaniment does not play. Start button flashes 3 green then 1 red. Began when someone randomly pushed number buttons on the key pad.


    Do an initialization (factory reset) by holding the HIGHEST WHITE key down and turning on the power. Hold the key for an extended time until display confirms initialization complete. This will restore unit to factory defaults.

    Jul 14, 2011 | Yamaha YPG-625 (YPG625) Digital Piano

    1 Answer

    On my yamaha v50 keyboard there is another sound on the keys after the c3 key how do i turn it off to just leave the synth sound?


    you must do master reset!

    1) Turn on the power.

    TIP: All buttons must remain depressed and be pressed in the order mentioned in step #2 for proper execution.

    2) Press and hold down the [SEQ] button, then the [CARD] button (located next to the Demo button), and then the [DEMO] button.

    3) Continue to hold the buttons down until the dialog box appears in the display. The display will first indicate the V50 Test Program and Main Rom Version then will automatically display the question: 'Test Entry Manual?'

    4) Press the [DEMO] button. The screen will display: 'Factory Set?'

    5) Press the [+1/YES] button. 'OK' will appear beneath the 'Factory Set?' readout, indicating completion of the Factory Reset, and the V50 will automatically return to Play Mode.

    Jan 10, 2011 | Yamaha Music

    1 Answer

    Casio keyboard lit up, no sound, no responses


    Unplug for several minutes and try again.

    If that doesn't work, look up the "factory reset" procedure for your particular model via google and follow that procedure. It usually involves holding certain buttons down before and during power up.

    Jul 20, 2010 | Casio Music

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    The Sustain pedal does not work.


    When push comes to shove, a factory reset never hurts.

    Assuming you'd like to proceed with a factory reset, follow these steps:

    This procedure makes it possible to restore the S08 to the original factory-installed Internal Voices, Multis and System settings.

    WARNING: The current settings for all Multis and User Voices will be deleted. If the current settings and data are not expendable, create a backup before executing the Factory Reset.

    1) Press the [UTILITY] button.

    2) Press the [JOB] button. The 'FactorySet' screen will be displayed.

    3) Press the [ENTER] button. The 'Sure?' message prompt will appear.

    4) Press the [INC/YES] button to execute the Factory Reset. The 'Completed!' message will be displayed to indicate the procedure has been successfully executed.

    5) Press the [EXIT] button to return to the Utility Mode.

    Oct 14, 2017 | Yamaha Full-Size Keyboard

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