Question about Yamaha Full-Size Keyboard

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Psr e303 yamaha double sounds

When I hit the G note below middle C it will do a double sound. The first sound is normal, even if given a soft touch but when I begin to release the G note there is a real loud note. IT only did it once in a while at first but now it does frequently. I hope it is just a dirty contact of some sort.

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  • imageplus1 Jan 05, 2009

    No I don't cover it but I will start to. I tried blowing off the keys with a can of air. It seems to have helped a little but it still does it.

    Thanks for the information and help



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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......

Posted on Jan 01, 2009


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My zoom g1x theres no sound.all power are working lcd light are on.but the sound cannot come out.can any one help me..

What letters / numbers that appears on the screen?
If the display is normal, and you can switch to other banks, and can edit each bank, then the problem of no sound, is at the pre-amp IC input, output amp, or CODEC converter.
This is the overall image of G1X inside.zoom-g1x-theres-no-sound-all-power-2ss5ycyvkoajtv035dpuezke-2-0.jpg Next, we zoom-in the middle of picture above.
See the next picture.
IC2 (left) is input pre-amp IC (NJM2100).
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Test whether the input IC is working normally, turn ON G1X, plug the guitar, go to BYPASS/TUNER menu. When the TUNER function could work, certainly input IC is not damaged.
Means only two possibilities, namely CODEC and output IC. That is not easily tested, except in specific ways.

May also, there are problems in the input / output socket.
Turn ON G1X. Try the following (see figure below):
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If lcd light are on (as you say), but appearing G1 or d5 or bt, and the system are hang / frozen, this is a different issue to the one described above,and dealt with in different ways too.

References IC datasheet:


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Banjo tuning and bridge placement

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I have a Yamaha P70 digital piano and one F and F# stopped working. Then the adjacent G,A,B,C ansd the sharps inbetween would only work sometimes - ususally after the piano had been on for awhile. The...

I just experienced my p85 with a key problem on the F# below middle C. You will need to disassemble the keyboard and usually the keys are groups of 6 - 8 keys. If you remove the group that has the problem you might be able to find the problem visually. Mine just involved removing and reinserting the F# key back into the assembly. Then reinstalling the group of keys. If you can't get the key to work properly, you will probably need to buy the group assembly from Yamaha.

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The key contact has gotten contaminated. They are a black conductive rubber pill pressed against circuit traces on a board bellow the keys. Remove that key and maybe others to get at the contacts in silicone strips. Clean ONLY with 99% isoprophyl alcohol and Q tips. Clean both the pills (two per note) and the circuit traces they touch. You have to release the spring at the back of each key to remove the key.

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When striking 3 keys key nomber;11 b flat;13 c;15 d,the volume is very high in level with all there any way i can repair or overcome this. this is in full keyboard mode thank you

Is it a dynamics sensing keyboard (does it sound soft when you play softly and loud when you hit the keys hard)?

If so, you need to clean the double contact under those keys that sound too loud (if contacts are dirty, the key might either not work at all or it may loose the ability to sense how hard you hit it and will work at full volume).

You'l probably need to disassemble the unit and remove the keyboard to be able to remove the keys that don't work well, after you've done so, you need to clean the lower (under) side of the double rubber button which is struck by the key when you hit it, also be sure to clean the contact tabs on the circuit board undereath the rubber pad (you can use ethyl or isopropyl alcohol and "cotton sticks").

This should do the trick if the contacts are dirty, but it may have no effect if they are damaged or worn out (in such case you would have to replace the rubber pad for that particular key).


3rq8 (Triarcuate)

Jul 31, 2009 | Music

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