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Korg pa3x sound problem

 
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Tamsing



Joined: 17 Nov 2022
Posts: 8
Location: ONTARIO CANADA

PostPosted: Fri Nov 18, 2022 12:27 am    Post subject: Korg pa3x sound problem Reply with quote

Hi all , my 1st comment/question on this forum. I bought a used pa3x a couple of months ago in supposedly `perfect` working condition. It functions and plays well for anywhere from 1 min to 1 hour then the sound goes crunchy on styles and full keyboard. I have taken apart and cleaned and checked connections , also replaced the KIP 2172 soundboard (by the assignable DNC buttons) which helped some but it randomly still happens. Has anyone had this happen and what did you do to fix? Bringing it back and asking for money back will only result in small claims court so don`t suggest that please. TC Helicon harmonies still work during this.
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karmathanever
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Joined: 12 Jan 2004
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PostPosted: Fri Nov 18, 2022 1:36 am    Post subject: Reply with quote

I assume you've gone through a full process of elimination like external cables and sound gear, getting same problem from headphones, OS restore etc...??

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Tamsing



Joined: 17 Nov 2022
Posts: 8
Location: ONTARIO CANADA

PostPosted: Fri Nov 18, 2022 2:05 am    Post subject: Korg pa3x sound problem Reply with quote

Hi , thanks for the reply. Yes I have tried and checked numerous things . It does the same thing thru headphones or external amp/speakers. I tried factory reset twice , boards and connections look good but who knows. I have the 1.63 OS and 256 memory was installed by previous owner. I haven`t tried reinstalling the OS like a overworked tech suggested since i`m not sure how. I was able to locate and order a new battery pack but it hasn`t arrived yet.
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musiccankill
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Joined: 30 May 2010
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PostPosted: Fri Nov 18, 2022 2:36 am    Post subject: Reply with quote

Can you record an audio clip or a video and post it here?
Does it sound like this one? :
https://www.youtube.com/watch?v=ZjUr9XGcedg
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Tamsing



Joined: 17 Nov 2022
Posts: 8
Location: ONTARIO CANADA

PostPosted: Fri Nov 18, 2022 2:56 am    Post subject: Korg pa3x sound problem Reply with quote

Hi , thanks for your reply, It is more pronounced than that in the video. It goes from working normally to sounding like a cat being thrown thru a window on all style and keyboards sounds. It isn`t about after touch (ie how hard I touch or play) just from normal to unplayable. I will try to catch it on video and post .
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Tamsing



Joined: 17 Nov 2022
Posts: 8
Location: ONTARIO CANADA

PostPosted: Fri Nov 18, 2022 5:06 pm    Post subject: Korg pa3x sound problem Reply with quote

Thanks, I ordered a battery pack partly because the sites were saying it`s been discontinued and partly because the sound is normal when I start playing and goes wonky when it warms up. I saw that the battery pack has a temperature wire so stabbing in the dark here. Maybe straight out removal of batteries is the way to go. Does one have to leave the board plugged in if they do that? I tried pushing the shift and style start button simultaneously which actually cleared up the sound somewhat when its working..
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Tamsing



Joined: 17 Nov 2022
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Location: ONTARIO CANADA

PostPosted: Fri Nov 18, 2022 11:46 pm    Post subject: Korg pa3x sound problem Reply with quote

Update: I removed battery pack completely and haven`t had a re-occurance in 1.5 hrs of playing. Maybe temp sensor malfunction?
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musiccankill
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PostPosted: Fri Nov 18, 2022 11:50 pm    Post subject: Reply with quote

Hello, I doubt it is the battery.The sensor is there just for protecting the battery from catching on fire while charging...
Did you listen to the entire video?
When i start playing the style later in the video, the drums (and the rest but drums are way too noticeable) are distorted with digital distortion.
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Tamsing



Joined: 17 Nov 2022
Posts: 8
Location: ONTARIO CANADA

PostPosted: Sat Nov 19, 2022 12:24 am    Post subject: Korg pa3x sound problem Reply with quote

Watched it , sound problem is similar but not as severe . What was your solution?
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musiccankill
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PostPosted: Sat Nov 19, 2022 12:29 am    Post subject: Reply with quote

It was a cpu board issue (DSP section).
3x has only 1 board.
It ll surely need to be looked by an experienced technician in motherboard repairs if the sound is digitally distorted.
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