Hi Luciana, first guess would be to buy potentiometer cleaner, remove the cap of the bass poti, spray the cleaner into the poti and see if it gets better.

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That’s great! If problems arise you could also try to short the touch pad with a capacitor (in the pF range) to ground. Maybe you could share your finished device here when it’s done? I’m curious.

Hi, the only problem could be the touch-buttons. I have no idea what will happen if you replace them with cherry buttons. I would suggest to try it out by soldering wires to the touch buttons and connect cherrys there. Maybe report back here when it is working? Thanks.

Has your volca been heavy used? Or has it been lying around for a while?

In both cases you may first try to open the volca up and clean the bottom side of the MUTE and PLAY buttons with isopropanol. There should be a black dot on the bottom. This is intentional, don’t try to remove it. Clean it. If pressed on the PCB this dot makes contact and registers a keypress.

De rien ;) ………………………

I assume you are saying by “broken” that he is physically broken. First google hit on “volca sample potentiometer” delivers this: https://syntaur.com/korg_volca.html There you can buy a replacement potentiometer.

There are many ways to replace the potentiometer:

You could use a hot air gun to heat the whole potentiometer until you can remove it. This presupposes that you have a hot air gun. And there are many other potentiometers which might get damaged.

Another way to do this is to cut all pins connecting the potentiometer to the PCB. I think it are the 6 small ones and two big ones. Then remove the broken potentiometer. Then use a soldering iron and remove the pins which are still stuck in the PCB. Clean the holes with a soldering iron and desoldering braid (or a method of your choice).

Clean everything. Solder in the new potentiometer. I wish you best of luck.

Hi, I don’t think that the red beeper cable is the cause. If your batteries are OK and playback doesn’t work either I’m really out of ideas. I would check the batteries with a multimeter and maybe try a third one. Then I would try to trace the current from the battery pins to the main logic.

Hi, you can try open the Volca and rinse it thouroughly with distilled water. Remove the batteries before. Then dry it with a fan and keep it open and let it dry on air for 24 hours. The re-insert the batteries and hope for the best. What kind of liquid was it?

Hi Bernhard, basically I share your opinion about the Super Macro Mode, which gets only activated if the Zoom is in the Tele-Position. However I don’t have any idea how to re-adjust the position of the cogwheels in Step 14. I would try to block one cogwheel (the small, white one), try to move the big black one and see, if something changes.

Sorry, I can’t help you here. You may try www.korgforums.com. There are some discussions about broken Volcas.