iFixit - Answers With Device "Synthesizers"

Teenage Engineering OP-Z: How do I remove the keyboard for cleaning?

Sat, 19 Sep 2020 22:01:49 -0700

I was hoping that there was a way to clean underneath the buttons themselves. The board itself seems to be sealed in. Is there anyway around that? Thank you

Teenage Engineering OP-1: Why won't audio come from the right channel of my OP-1?

Tue, 17 Mar 2026 18:42:12 -0700

I have made sure that all the tracks are panned towards the center, but no audio comes from the right channel. If it is plugged into speakers or headphones and panned to the center, audio only comes from the left side. If it is panned to the right no audio come out. I was curious as to if there is something I am missing or if this is a hardware problem that requires repairs/parts. Thanks!

⟐ Commented March 17, 2026 at 18:42 MST

Teenage Engineering OP-Z: Where do I get replacement encoder dials?

Sun, 07 Jul 2024 23:11:22 -0700

Encoder dials don’t seem to be available and I’m missing two thanks to lending it out, please help

3D file for replacement encoders with space for a 6mm DIAMETRIC magnet https://drive.google.com/file/d/1-O0g11s...

⟐ Commented July 07, 2024 at 23:11 MST

Teenage Engineering OP-1: Why is my OP-1 not turning on?

Sun, 28 Feb 2021 14:11:54 -0700

I have been storing my OP-1 and using it since 2013. The other week it stopped turning on; currently, when I flip the power switch, I hear the power get to the speaker but the screen does not glow at all. Is this a screen issue, ui issue, or is it something else? It has turned on previously but it only works after I perform a firmware update or sparingly at any other time.

⟐ Commented February 28, 2021 at 14:11 MST

Akai MPK25: How can I replace my usb port?

Sun, 26 Jul 2020 13:44:14 -0700

The usb port to my MPK25 is busted, help me replace it, please?

⟐ Commented July 26, 2020 at 13:44 MST

Teenage Engineering OP-1: Why is my USB port not working?

Mon, 19 Dec 2022 13:49:49 -0700

The USB-port (data connection!) is not working (whereas charging via USB is).

I got to know this, when I wanted to save my work and I could not. I tried different PCs with different OS (win xp, win 10, linux ) but the PCs did not recognize my USB device OP-1. Either (most of the time) the PC did not react at all or it showed the message "The last connected USB device could not be recognized.".

Okay, then I did something crazy: I tried all of the five options in the TE boot screen.

Most of the options worked, unfortunately option 8. "Format Drive" too.

After that my OP-1 did not work at all. I can switch the device on and off, but that's all, no button is operating. The device is still charging. Invoking the TE boot screen is possible and choosing the options as well, but because of the defective USB port nothing more is possible. BTW I tried several USB cables and several PCs.

Please give me some advice. Is there a TE service point, to which I can send my device in?

Thank you!

⟐ Commented December 19, 2022 at 13:49 MST

Teenage Engineering OP-1: Why is my volume knob stuck at one volume?

Wed, 24 Aug 2016 05:27:39 -0700

Hey there,

My OP-1 Just stays at one volume. The knob that controls the volume stays at the loudest even if I turn it all the way down. Not totally sure what to do, or how to repair.

Thanks

⟐ Answered August 24, 2016 at 5:27 MST

teenage engineering EP–133 K.O. II: Fader is loose, causing flickering

Thu, 22 Aug 2024 07:16:39 -0700

Hi, I recently opened up my ep-133, there is something wrong with the fader. When I use the pads to play a sequence there is flickering caused by wiggle in the fader. It appears the fader is loose or broken. I have another ep-133 unopened (I was planning on keeping it as a collectable) and I'm worried it will have the same issue as they were purchased at the same time.

Can I get a replacement/fix?

⟐ Answered August 22, 2024 at 7:16 MST

Midiman Oxygen 8: When I move the keyboard, I hear something bouncing around inside.

Sat, 02 Nov 2019 11:04:42 -0700

I'm just curious if this is a sign of something being broken, and if so, what should I do?

⟐ Commented November 02, 2019 at 11:04 MST

Teenage Engineering Pocket Operator PO-24: fix my Teenage engineering pocket Operator

Mon, 19 Jun 2023 17:13:47 -0700

I need to replace the screen as well as a button.

Teenage Engineering OP-1: Sound from speaker not working

Sat, 04 Nov 2017 07:51:35 -0700

How do I get the speaker working? It no longer works. Phones do give sound.

I've reflashed and reset the device. Changed the phones.

⟐ Edited by author November 04, 2017 at 7:51 MST

Teenage Engineering OP-1: Why won't it turn on?

Fri, 21 Apr 2023 17:20:33 -0700

I've read every blog as well as watched the very, very few videos with regards to this problem and yet the outcome is still the same....upset individual.

when you hold down the help key you can check the battery level indicated by the VU/battery meter located on the right side of your OP-1.the battery level is indicated by the LED array on the right side of your OP-1.all LEDs lit (including the red) indicates a fully charged battery good for around 16 hours of heavy use. The stand-by time is approximately 2 years.to recalibrate the battery meter please do the following: disconnect USB, turn your unit on and leave it on until it turns off by itself. do not manually turn off the unit. this could take up to 18 hours. the unit is off when the screen has turned black.after this, charge it fully using a computer or any standard USB charger. this can take about 2.5 - 6 hours depending on your situation. (the battery is 1800mA). this should recalibrate the battery indicator.

2nd type of instruction

Make sure the OP-1 is turned off.

Disconnect the USB cable and wait a few seconds. Important!

Connect OP-1 to a computer or charger using USB and leave it turned off for a few hours.

After this disconnect USB again and leave it turned off for about three seconds.

Finally reconnect the unit again. Does it charge now?

Try this a few times, and report back.

Nope, not even the above instructions worked. Never has it ever left the studio nor handled by anyone other than me. Please HELP ME Please.

Martin

Chicago

⟐ Commented April 21, 2023 at 17:20 MST

KORG Monotron: don`t power on how to fix it

Wed, 30 Jul 2025 10:28:35 -0700

my monotron do not power on testing it with a 3volt AcDc Adapter Could you help ,please-

or have i to throw it away?

⟐ Answer edited July 30, 2025 at 10:28 MST

Teenage Engineering OP-1 field: OP-1 field Faulty Microphone Repair

Thu, 05 Mar 2026 15:15:46 -0700

I've loved my OP-1 field and taken good care of it, but in the last month or so the internal mic went from sounding terrific to only ultra high end and zero body in the sound. Has anyone come up with a guide to replace the mic? Thanks!

⟐ Commented March 05, 2026 at 15:15 MST

Teenage Engineering OP-1 field: Onboard mic problems. On op 1 field

Thu, 05 Mar 2026 15:14:04 -0700

Mic went from being ok to losing its power and even if i talk loudly up front snd close to it u can barely hear it, but the ui reacts the the mic levels when i tap it with my finger so its working but not properly. The unit has been used for 4 months only and its kinda frustrating that the mic went off, the thing hasnt left my desk and i tske care of it very much…bummed out and looking for solutions

⟐ Answered March 05, 2026 at 15:14 MST

Korg Electribe SX: Whilst putting in the adapter. He stays dead. No life..

Thu, 22 Sep 2022 11:15:29 -0700

I put the adaptor in and normal on display you see “welcome korg….”

It does nothing anymore, i have send it to some friends with more knowledge, but they dont have a clue..

Maybe its something with the motherboard? I hope not..

Thanks guys i hope you can help me.

Here are the fotos of my korg

While turning on the korg, display’s light turns on bit no text appears. And not fuctionable

⟐ Commented September 22, 2022 at 11:15 MST

Teenage Engineering OP-1: Why is my OP-1s line out and speaker not working?

Thu, 19 Dec 2019 14:31:39 -0700

I turn it on and it starts making a glitch sound. Speaker and line out dont work at all even though the sound bars and the led light tell me its making sounds

⟐ Answered December 19, 2019 at 14:31 MST

Teenage Engineering OP-1: Why won't the screen turn on even though everything else works well?

Mon, 02 Dec 2019 16:29:32 -0700

New unit, purchased about four weeks ago.

About two weeks ago the screen stopped working. The rest of the unit seems to be working well, sounds come out of the unit when I press keys, and I can toggle through different functions, however I’m working blind.

I tried to do a reset (COM while turning on + pressing 7 after ) however this didn’t work.

I tried to connect to my computer to then upload firmware, but unfortunately when I connect the unit (after turning on with COM + pressing 1 after) it doesn’t show up as a drive in my MAC. I’m not sure if this is a cable issue, as I’m using the one provided by TE.

The unit is still under warranty, but given that TE just announced they will discontinue, returning it would mean I will not be getting one back. Any help would be deeply appreciated!

⟐ Answered December 02, 2019 at 16:29 MST

Midiman Oxygen 8: Keyboard does not respond when played

Mon, 28 Nov 2016 18:56:28 -0700

The LCD screen lights up and my computer acknowledges when I changes the values of the dials, but I get no response from the keys when pressed.

⟐ Answered November 28, 2016 at 18:56 MST

Teenage Engineering OP-1: Why wont Ifixit stop re-sellers from poaching connector boards

Tue, 24 Jun 2025 16:32:54 -0700

This part is notoriously always sold out.. i have been trying to get this board for 4 years and its BS that they are always poached and resold. last image is the only seller i can find right now for 300 bucks. does Ifixit or teenage engineering care?