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Popping sound through sound system speakers

Seems like it is about 60-70% of the time when the keyboard is being played that it pops through the system. our keyboard is a ydp-223. nothing else hooked up to the sound system does this. So I was thinking that maybe there was something to change with the keyboard. It happens most of the time when the pedals are being used, but not everytime. It will pop one measure then it wont till several measures more into the song. Then there are sometimes it does not do it through the whole song. Would like some suggestions if you know. This is used in church services every week.

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Make sure that the trim (gain) isnt set too high on your keyboard's PA channel. it might just be clipping due to input levels that are too hot.

Posted on Nov 26, 2008

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Blue LCD screen


I had the exact problem, mine was a YPG 535 brand new in box I put everything together with stand and FC4 pedal. When i got ready to play just a blue screen and none of the red lights came on and no sound, I notice when i was messing with the on and standby button hopeing it would work the speakers would make a popping noise I personly thought it was a manufacturing defect.....i'm sending it back to have it replace. I never had problems with yamaha products but seems like more and more defects are happing with newer portable grand series!

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Enter button not working


If this is a traditional keyboard (not laptop) or extremely fancy keyboard.

Try unplugging the keyboard. Then.
  1. Take a butter knife and slide it into the crevice next to the "enter key".
  2. Apply a small amount of pressure to pry the key upward.
  3. With little effort the key should pop off or slide off.
  4. Check the spot the key was for dirt, dust, food, etc. Clean it if you must. Make sure the actual key does not have anything stuck to the bottom of it.
  5. Push the key back onto it's place on the keyboard.
  6. Plug back in and see if that worked.
If this did not work, you may need to replace the keyboard OR you may want to make sure no viruses are playing an aweful trick on you.

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My Yamaha psr-500 wont turn on. When I push the on button the speakers make a popping sound and when I hold the on button down I get static through the speakers along with 3 notes one after the other


Is this on mains or battery? This keyboard must be nearly 20 years old, it's done well! If you have batteries in but are using mains power, the power adaptor could have failed and not enough juice left in batteries to work. Try new batteries and try without any.

Aug 09, 2013 | Yamaha Musical Instruments

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The sounds in the keyboard after playing for a munite or two start to pop up


Sounds to be getting old and has some dried out filter capacitors that need replacing.

Feb 19, 2013 | Musical Instruments

1 Answer

We heard a loud pop... then saw a flash of light set off by the internal speakers. What causes this? Are these speakers out of phase? What's causes this?


These are rated peak 600 Watts... your amp should NOT be bigger than 200 Watts RMS per speaker cabinet driving these to prevent burning out the speakers. The pop MAY have driven the speakers to full excursion and temporarily shorted the speaker voice coil. Test the DC resistance of the speaker... if you find it is under about 3.7 ohms you have damaged the speakers and continued use may damage your amplifier.. Often people will unplug a guitar cable causing a loud pop in the PA system and that CAN damage the speakers if the amp is too big.

Aug 16, 2011 | Kustom KSC215H PA Cabinet

1 Answer

Have a Impedance Compensating Speaker Selector that suddenly no sound comes from my speakers. Could the amplifier be blown? How can we check this?


First (and real easy). Use an ohmmeter to check the speaker(s) in question to see if the voice coils are blown. If the speakers show resistance (somewhere under 10 ohms) you should get noise. If you have no ohmmeter, you can momentarily touch the wires to a 1.5 volt battery. If the speaker is any good, you will hear a "pop".

However...that being said...Without more info, some speaker systems have their own fuses. THese could be the source of a no-sound problem. Sorry I cannot be of more detailed service.

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2 Answers

WHEN I'M ON THE CLEAN CHANNEL AND SWITCH TO DIRTY WHILE PLAYING, I GET A POPPING SOUND FROM THE SPEAKERS. PURCHASED 3 DAYS AGO AND THIS STARTED RIGHT OUT OF THE BOX!


You are likely driving the unit too hard.

When you drive a speaker too hard the voice coil is driven beyond the linear range of movement and the speaker will "pop" as it hit the end range.

Compare to an identical unit. This problem is common when one gets too small a unit and tries to get too much out of it.

The dirty setting of the amp flatops the signal and drastically worsens the problem.

People buy a 15 watt amp and expect it to sound like a 200 watt and it just doesn't happen. You have not given us the model number so this is my best guess.

If your unit has a 12 or 15 inch speaker, it should NOT pop unless you really overdrive it. It is very hard on both the amp and the speaker to have the popping condition. I won't get into the technical reasons at this time.

Mar 18, 2010 | Musical Instruments

1 Answer

Line 6 spider 210 volume problem


The bypass switch in the headphone jack is likely broken. NEVER unplug the headphones while the amp is on.

There are certain small amps that have a possibilty of popping the power amp due to a feedback arrangement. Likewise, never use the headphone jack for ANYTHING other than headphones.

Dec 20, 2009 | Musical Instruments

1 Answer

Mackie SRM450 speaker keeps making a 'popping' sound


First thing is to verify that a ground loop from your driving equipment is not causing the problem. Easiest way is to drive it with a BATTERY operated little CD player so no ground loop could exist.

Verify that your power cord is in tight and try another cord to verify it is OK.

Beyond this, service is probably required. If unit is out of warranty, you could have a person open it up to see if anything is obvious.

A possible proble is bad connectors or worse, a cracked circuit board.

Analyzing if noise is from both the woofer and high range speaker is a first step.

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