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Master volume potentiometer

 
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1bobkins



Joined: 29 Jan 2013
Posts: 7

PostPosted: Mon May 06, 2019 3:14 pm    Post subject: Master volume potentiometer Reply with quote

Hello.
Where will I buy the master volume potentiometer for the Pa4x ?
What is his symbol? At some point, it grows stronger.
Sorry for my English.
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karmathanever
Platinum Member


Joined: 12 Jan 2004
Posts: 8513
Location: Australia (Oz !!)

PostPosted: Mon May 06, 2019 4:32 pm    Post subject: Reply with quote

Just confirming - you want to get a new potentiometer for the master volume?

Pete Very Happy
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Bescki
Senior Member


Joined: 03 Feb 2007
Posts: 250
Location: Kosova

PostPosted: Mon May 06, 2019 8:16 pm    Post subject: Reply with quote

I also have problem (and a lot of friends) with master volume knob...
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korg1
Approved Merchant
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Joined: 17 Nov 2002
Posts: 464
Location: http://pasongstyles.com/

PostPosted: Mon May 06, 2019 8:19 pm    Post subject: Reply with quote

second time i hear someone having problems with volume/balance pontesiometers.

Recently i was in Athens and i managed to get 2 pieces for a friend who also had problems.
The spare parts were from Croatia actually,and costed about 19euro each.
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BR
Platinum Member


Joined: 19 Oct 2004
Posts: 1069
Location: USA

PostPosted: Wed May 08, 2019 3:59 pm    Post subject: Reply with quote

Me too I have problem with Master Volume knob.
I am not sure if this is the same problem as 1bobkins.

When I raise a little bit the Master Volume from 0 it goes to maximum volume.
Not sure but this may be a result of dirt or dust built up on the potentiometer.
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Snoopy
Full Member


Joined: 05 Jul 2016
Posts: 203
Location: North-West Germany, Eastfrisia ;)

PostPosted: Wed May 08, 2019 6:28 pm    Post subject: Reply with quote

Maybe, due to excessive using, the carbon-layer is damaged.

Dust doesn´t seem to be a problem.

BTW: How often do you use the volume-knob ?

I have my PA4X more than 3 years now, maybe I used the knob 20 times...

For home use set the level once and leave it...

For on-stage-use once adjust the output-level to the mixer and leave it... ( increasing volume sould be done with the mixer then... )

BTT : In case you can´t get the exact values you´ll have to open the case and extract the potentiometer. Usually the values are printed on it. If not you can measure the value...
Any better electronic-market should sell such potentiometers for a few € / $
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Korghelper
Junior Member


Joined: 26 Jul 2017
Posts: 55

PostPosted: Thu May 09, 2019 5:34 pm    Post subject: Reply with quote

Two things can be important contributors to unreliable main volume knobs...

First is dust and dirt. Unless your arranger is in a sterile clean room, dust and airborne dirt ARE going to settle. If anyone smokes in the room, tar will settle on every exposed surface and make it stick even stronger. Eventually, there's a good chance that that dust and dirt finds its way to the potentiometer wipers, and you now have a crackly or jumpy knob. This is exacerbated by keyboards that use fans to suck air inside the case to cool componentry, allowing the dust and tars to settle in places you might not think it can get to.

A plastic (not cloth!) cover is a huge help here. Prevent any dust settling during the majority of time you aren't playing the instrument reduces the odds of problems by orders of magnitude. Get a custom made, fitted to the instrument type. The tighter and closer the fit, the less dust will get to the panel and jacks.

Next is a case. Make sure you use one for transportation, and make sure the instrument does not flop around inside it! You would be amazed how many cases fit well side to side, but the lid doesn't prevent the keyboard flopping around as you carry it. Should the master volume knob (or any knobs and sliders) contact the case or bump against the hard padding or even worse, the case itself, wear will occur to them. Make sure there is custom padding fitted to hold the keyboard securely, and that padding is only on parts of the keyboard with no knobs and sliders (the end caps is the best place for this).

Lastly, yes, you remember to clean your keyboard from time to time. You vacuum off the surface, wipe with approved cloths and cleaners, don't you?But how often do you clean the inside of your case? It's defeating the point to clean the keyboard and then put it in a dusty, dirty case! Vacuum out and clean out your case as often as you do the keyboard...

Take the above advice, and the odds of a knob or slider problem go down a LOT.

Last piece of advice... keep an eye on availability of spare parts. Especially if you tend to keep keyboards for a decade or more before you upgrade. If you see or hear that spares are becoming harder to find, it doesn't hurt to buy a few for the critical components (main volume, sliders, start/stop knobs) just in case..!
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BR
Platinum Member


Joined: 19 Oct 2004
Posts: 1069
Location: USA

PostPosted: Thu May 09, 2019 6:23 pm    Post subject: Reply with quote

Snoopy wrote:
...BTW: How often do you use the volume-knob ?

I gig with my Pa4X three or four times per week in different locations and some practicing at home.
So I cannot say exactly how many times I use the volume knob.
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1bobkins



Joined: 29 Jan 2013
Posts: 7

PostPosted: Mon May 13, 2019 8:56 pm    Post subject: Reply with quote

Has anyone read the potentiometer symbol?
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Korghelper
Junior Member


Joined: 26 Jul 2017
Posts: 55

PostPosted: Tue May 14, 2019 6:29 pm    Post subject: Reply with quote

BR wrote:
Snoopy wrote:
...BTW: How often do you use the volume-knob ?

I gig with my Pa4X three or four times per week in different locations and some practicing at home.
So I cannot say exactly how many times I use the volume knob.


But do you tend to use the exact same spot on the knob every time you play?

Maybe you can avoid the bad spot (until you get it replaced) by moving to a bit less volume or a bit more (out of the jumpy zone!) and then adjust at the mixer to compensate.
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1bobkins



Joined: 29 Jan 2013
Posts: 7

PostPosted: Tue May 14, 2019 7:42 pm    Post subject: Reply with quote

I ordered this:
Potentiometer 6 mm 10k? ± 20% 0.05W
Rotating eyepiece RK09D Alpine Alpine
RK09D1130C2P
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