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 Flanger with high pitch feedback sound?		  New Topic  Reply to Topic
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Vim Fuego
Gold Member

Denmark
566 Posts
Posted - 06/05/2009 :  20:47:39  Show Profile  Reply with Quote
Hi all

I have a Korg PMX-40 with a stereo flanger.. when this flanger is engaged it immediately starts to make an extremly loud high pitch feedback sound.. it dosn't matter how the pots are set - just this squaling when engaged

Anybody has any ide how to troubleshot this kind of thing? Looking at the PCB nothing springs to mind..

Cheers
Edited by - Vim Fuego on 06/05/2009 20:48:35

Dr. Bob
Moderator

Australia
6593 Posts
Posted - 06/06/2009 :  06:59:02  Show Profile  Visit Dr. Bob's Homepage  Reply with Quote
Hi Vim Fuego

While I don't know this Korg unit.
i can't even find a reference to in on the web,
All I get is Sennheiser headphones with the same model number...

If it's a multiFX - perform a factory reset on it
In case someone set it up incorrectly.

If it's a single effect:
I would check-look around the Resonance pot & circuitry.
Most Flangers will self oscillate if the Res control is set high,
or if the pot has failed in some way.

Maybe post up some pics for us to have a look at.

Regards Dr. Bob
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