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Keyboard plays random notes sounds whenever th keys are touched

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Hello,

I would advice you clean every part of the keyboard, perhaps, if you can get air pressure pump to blow the keyboard on your device, because this most likely dust problem, because when dust are stuck on the keyboard, it can cause the keyboard to malfunction as said. clean and blow the key board with vacuum air pump to see the difference.

Take care.


Posted on Jul 07, 2010

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1 Answer

Yamaha YPT 400: ALL re are not working


Hi, If by "re" not working you mean note D then try the following.
Keyboard off, hold down top C key while turning on. This factory resets. Does D key now work - if not. Has it ever worked - if not then it could possibly be the ribbon connector between the keyboard and the motherboard. If one of the cables gets bent then this would stop all notes associated with that connection to stop working. This will only have occured if the keyboard has never played these notes or if it has been taken apart.

You could also try the self test mode : Keyboard off, hold C#,F, G# in the 2nd octave up whilst turning on, cycle through tests to sound if it plays all the notes one at a time then the sound chip is ok and it points to keyboard switching. If test mode does not come up in 2nd octave try 3rd octave ( cant remember which one it is from memory )

Let me know how you get on.

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yamaha-ypt-400-all-re-not-working#solution-section-o0etyz1v3mt3zyequ52mc4su-5-2_0.jpg

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1 Answer

QS8 keyboard. Why is volume in organ mode much louder than piano mode when I switch between modes without touching volume slide?


On organ mode, in general, almost all brands of the modern keyboard, velocity setting is not enabled. Setting velocity is used to determine how much the level of the sound that follows how strongly you press the keys. It is really just to imitate the sound of vintage organs, which in the past, electronic organ technologi not use the velocity on the keys. So, how strong / slow we press the keys, the sound level will remain the same.
At the Piano mode,modern keyboard using setting velocity. This also to imitate an acoustic piano, which, if we press the keys slowly, the sound level will be slow as well, and vice versa.
So, in your case,at the same volume slider, try to play on the organ modes, note level. Moving to the piano mode and press the keys securely powered (full power). Then the sound level should be equal to the organ mode.
On modern keyboards, also included organ sound that added velocity setting. Usually found on the user bank.

Sep 01, 2015 | Alesis Music

1 Answer

Alesis QS8 keyboard. The volume of the organ is much louder than the keyboard when I switch between both modes without touching the volume slide. How can I fix this.


On organ mode, in general, almost all brands of the modern keyboard, velocity setting is not enabled. Setting velocity is used to determine how much the level of the sound that follows how strongly you press the keys. It is really just to imitate the sound of vintage organs, which in the past, electronic organ technologi not use the velocity on the keys. So, how strong / slow we press the keys, the sound level will remain the same.
At the Piano mode,modern keyboard using setting velocity. This also to imitate an acoustic piano, which, if we press the keys slowly, the sound level will be slow as well, and vice versa.
So, in your case,at the same volume slider, try to play on the organ modes, note level. Moving to the piano mode and press the keys securely powered (full power). Then the sound level should be equal to the organ mode.
On modern keyboards, also included organ sound that added velocity setting. Usually found on the user bank.

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1 Answer

Why are some keys on keyboard are not playing


It's most likely to be dirty key contacts.
The contacts are conductive pads. They get "crud" on them over time, which then just needs to be cleaned in a certain manner.
Best to clean all the pads over the entire keyboard. It's not difficult for someone with experience, but it's not a job for a novice.
My guess is that the keys are toward the center of the keyboard.

Jul 29, 2014 | Yamaha Used Arius Ydp140 Digital Piano...

1 Answer

No sound on one key


That's very annoying! The keys press on to a contact strip running the length of the keyboard. Over time this wears out and notes can either stop being dynamic or stop playing altogether. You can buy the strip off ebay and have a go replacing it yourself - not too expensive. I paid someone 50pounds to supply and fit one to a 61-note keyboard.

Dec 18, 2013 | Yamaha YPG-625 (YPG625) Digital Piano

1 Answer

Yamaha YPT-410 When playing the keyboard, the sound cuts out when playing multiple keys, and then begins again only to cut out again. Does not matter which keys. I have done a factory reset and it did not...


It's probably your keyboard. Some keyboards are limited with it's polyponic capabilities. Some can play many notes at one time, some cut out when it reaches it's limits. Check your manual for specifications.

Aug 25, 2011 | Yamaha Corporation Of America 61 Key...

1 Answer

I'm using the Yamaha P-85 Digital piano. Unfortunately it has lately had some problems. When I'm playing to notes next to each other (especially e and f (mi & fa) or b flat and b (si & si...


In playing fast you have to make sure to release the note fully and let the key come up. These keys have TWO contacts that are used in the scheme to measure note velocity. If BOTH contacts don't open, the note will NOT re-fire. The second symptom you have written would be a characteristic if one of the disconnect diodes has shorted. These diodes direct the strobe signals that scan the matrix of key contacts to avoid other octaves responding when multiple keys are depressed including those in other octaves. Servicing of the unit is required. It is unlikely you have the tools to DIY this problem. ONE THING to try is to tip the unit and gently tap it to see if some debris MIGHT have fallen in that may be shorting some of the matrix connections.

Apr 25, 2011 | Yamaha P85 88Key Portable Digital Piano

1 Answer

I have a Yamaha PSR-S700. Recently, the touch sensitivity in one of the keys stopped working. Very little pressure applied would cause the note to sound as if the touch sensitivity was off completely. Now...


You MAY be confusing touch sensitivity with VELOCITY sensing. Touch sensitivity is PRESSURE put on AFTER the note sounds that causes modulation. VELOCITY is what is used for example to control the loudness of pianoo notes depending how fast they are struck. VELOCITY sensing is done by using TWO contacts at every key... one closes first. IF one of these gets dirty, FULL velocity will be sensed and it will be LOUD. The contacts can be cleaned using ONLY 99% isoprophyl alcohol and Qtips after MUCH disassembly of the keyboard. The contacts are conductive rubber pills in silicone rubber domes. Clean boththe contacts and the circuit traces they pres down onto.

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1 Answer

The sound on my synths is not working. I just bought reason5, and all that makes noise is the kong drum machine. I am very new at this so it is probably a stupid problem, but whenever I pull up the...


okaye, i justt figured itt outt, hopefully you gett an email aboutt this postt...

so anywayz yo,

how many instruments you have hooked up to your mixer? thats the key, #1.

make sure you have atleast ATLEAST 2 mixers in your start up program, once you use the max output input for your original mixer, the next instrument patch you load will not be routed, (no more space), you'll have to route it manually (press Tab) *get familar with routing your own devices, for reverb/chorus and such,

this applies to everything about recieving sound from your project/keyboard. and just route your extra devices on the new mixer --they go up to 14 channels, i have like 22!
so thats my solution, hope itt applies.
Dre'
South Caro-line-em- up
~1~

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1 Answer

Psr e303 yamaha double sounds


Do you cover the keyboard when not in use as small particles of dust can make their way in between the keys?

You can try blowing any obstruction out with a can of compressed air, may solve your problem.

As I'm not familiar with this Model, does the keyboard have 'touch response' on board? If so there will probably be a 'Contact' strip made out of tubular rubber under the keys and this can sometimes 'burst' especially on a certain key that is played most of the time. For example if you play mostly in the key of 'G' or keys that use that note....

Hope you find this helpful......

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