Random Popping/ crackling sounds when not playing synth

Discussions about anything analog, digital, MIDI, synth technology, techniques, theories and more.
Post Reply
Musicwerks
Newbie
Newbie
Posts: 77
Joined: Sun May 04, 2014 7:13 am
Real name: Yeo
Gear: MaxiKorg DV800, MiniKorg 700s, MiniKorg 700, Korg Prophecy, Korg M3
Location: Singapore
Contact:

Random Popping/ crackling sounds when not playing synth

Post by Musicwerks » Tue Jan 26, 2016 3:23 pm

Hi all,

I have a 3rd hand Maxikorg which is showing some problems.

After warming up and playing for sometime, I will start hearing popping and crackling sounds in the background on both upper and lower sounds when I am not playing the synth. The notes will also get an extra popping effect on the attack when I play.

Then I would need to switch off for a while. It becomes okay after that again.

Can anyone advise me what might be the potential problem?


Refurbishment done thus far
a) The two SK30 transistors have been replaced.
b) Power SUPPLY lines have been recapped.
c) the lower voice VCO panel has been all been recapped.

Thanks in advance
Musicwerks

adhmzaiusz
Active Member
Active Member
Posts: 273
Joined: Tue Jan 29, 2008 8:27 am

Re: Random Popping/ crackling sounds when not playing synth

Post by adhmzaiusz » Tue Jan 26, 2016 3:38 pm

Sounds to me like a cold solder. You'll have to examine the boards to find it.
‹‡›

sawwave
Newbie
Newbie
Posts: 2
Joined: Sat Aug 08, 2015 6:26 pm

Re: Random Popping/ crackling sounds when not playing synth

Post by sawwave » Tue Jan 26, 2016 6:09 pm

I had a similar problem with my Microkorg XL. There was a faulty ground connection between two boards. Not that simple to figure out, but easy to fix.

User avatar
garranimal
Synth Explorer
Synth Explorer
Posts: 1728
Joined: Mon Sep 27, 2004 8:57 pm
Location: USA
Contact:

Re: Random Popping/ crackling sounds when not playing synth

Post by garranimal » Tue Jan 26, 2016 7:22 pm

I had something similar going on with a Korg Delta, it was a dying capacitor in the filter circuit. It was very hard to track down.

Post Reply