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The speakers on my PX-700 are making a fuzzy noise when certain keys are pressed. Can they be fixed or replaced?

With headphones on, my Casio Privia PX - 700 sounds beautiful, but with just the speakers, I can barely stand to listen to it because of a buzzing sound that comes with several of the keys, most of which are in the middle range. I don't know anything about fixing speakers. Does anyone have any advice or know where I could get a replacement set? Thank you.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: Casio Privia keyboard PX-100

There are a number of issues that could cause this, the most likely culprit is the power supply, when I say power supply I mean the internal power supply, 
This means that you have already obtained a good "known to work" AC to DC power supply, and tested it on your keyboard to see if that is the problem. 
If you have completed this step, then your next step is to test your unit with batteries only, if the keyboard works, then you know your problem, is internal to the keyboard. 
There are two issues to check, before proceeding please read the following note.
 (a note here for those who have no experience working with internal electronics)
If you have no experience working with internal electronics I would not recommend, opening your keyboard. 
Two reasons, one, will void warranty if it still is under warranty. 
secondly, you could accidently cause more damage to the unit. 
Now if you are still reading, and feeling confident, you know that as a child you have dissembled many many electronic devices, just to see how they work. 
If you do decide to open the box, disconnect the power supply to the unit including any batteries. 
open the box and locate the power on button, clean using a Dielectric cleaning agent, can be obtained at most electronic specialty stores. 
clean the power button, may work but doubtful, usually the switch itself is usually bad, there is a way to test the switch, however, that is beyond the scope of this answer, if you are following this you will most likely have the knowledge to do this. 
The second and more challenging issue will be the internal power supply to the keyboard, or the interface that connects to your ac to dc converter. 
This can be much more trickier, and I wont go into it here. 
If you test your power switch determine that it is good then you should consider getting the unit serviced by a technician. 
If you examine the boards, (electronic circuit boards,) and notice burned, connections, (darker than other circuits) then most likely it will not be worth trying to fix. 
Hope this helps somewhat, if nothing else, take this print out to your local service dealer, and that will help in getting your keyboard repaired, 
Delete this part, before taking this to your dealer, 
Most electronic products can be easily fixed with a power switch, or power supply, however, many dealers will not tell you this and give you an estimate of fixing the unit that far exceeds the actual cost of repair, 
an example, in a local TV repair shop, a friend brought in a wide screen Plasma HD TV, quoted repair, $654.00  problem, 
power supply, actual cost, $75.00 my friend ordered the part online and with the help of a friend installed the new power supply returning his unit to full functionality. 
So beware, 

Posted on Mar 05, 2008

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yooperbud
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SOURCE: Replacing Battery in Casio Privia

Not sure about your mouse but ry Normal 0 If the mouse doesn't have a little door to open on the bottom, then try this. Just behind the Left and Right keys where your hand rests, apply firm pressure down on the cover and slide to the rear. Some mouse manufactures have used this type of access to replace the batteries.
Hope this helps. Bud

Posted on Jan 20, 2009

  • 1 Answer

SOURCE: Casio Privia Px-120 88 key digital piano frozed.

Hiya,
I had the exact same problem and the piano is brand new! I considered the possibility of the above answer as I had plugged it in via a power cable (it was missing the 3 pin UK plug) and it was also plugged into a power strip. My dad also looked at it and couldn't see why this should cause it...but I tried the different combinations anyway...including with the proper 3 pin plug attached to the adaptor (when it arrived in the post), rather than a power cable. This was the result:

Power cable +power strip = piano froze
Power cable (straight into wall) = piano froze
Proper 3 pin plug supplied + power strip= piano froze
Proper 3 pin plug (straight into wall)= piano froze!!!!

So....in answer to your question...I'd say there's something wrong with the piano! If not, it should've worked for me on the correct combination. :I I will now be returning mine. I worry what the cause is though considering my piano is brand new....and therefore is this a fault that regularly occurs with Casio privias? I don't want to spend this much money on one if it's going to do this eventually.

Posted on Jun 23, 2009

  • 5603 Answers

SOURCE: I have a Casio Privia PX-320. The left side keys

Check that the front of the keys is not hitting the lower plastic case front. If they hit it, then you need to disassemble the case partly and see what has shifted. It is ALSO possible that something has caaaused the aftertouch sensor to move out of position and it is hitting the keys early. ANY of these conditions needs to be addressed before damage is done.

Posted on Dec 01, 2009

  • 5603 Answers

SOURCE: casio privia key issue

The only way to analyze this is to open the case. You may find contaminating material has gotten in, or broken part, or key slightly out of position on pivots or pivot plastic broken.

When opening, be VERY careful of the tender ribbon cables. Have a large work surface that you can unfold the top onto. Be careful to use correct screw lengths and thread in each place you removed.

Posted on Apr 27, 2010

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The power is likely collapsing under load of the speakers but headphones take much less drive.

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Internal power supply components are beyond those individuals that are not adept at electronics.

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