Octa Mkii stuck in sone weird mode where the LEDs are strange colors and all the buttons in the top left are dont work. It seems like some kind of weird “mode” but i cant find any information about it anywhere… has anyone else experienced this?
Saw a digitakt come through with a similar issue recently. I’d say put in a support ticket and see what they have to say.
Recall the. DT owner said something about an empty reset fixing his?
Yeah, i was afraid of that. I found some documentation by a DT user with a similar issue, deff wasn’t a “mode”. Ive opened a ticket and so Ill see. Likely an empty reset. Sigh.
Hmmm … you are afraid an empty reset may fix it?? 
What’s holding you back from trying an empty reset (hold [FUNC] while powering up to access the startup menu)? An empty reset just clears the RAM completely and doesn’t change anything on the CF card so it won’t hurt you or the OT in any way.
From the startup menu you can also access test mode to check some basic things like LED colors, trigs and crossfader behaviour, the display etc.pp. …
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Really? I just assumed it was a factory reset / format and therefore a last resort. So, it wont erase my project?
I ran test mode and everything is ‘OK’…
Update: empty reset didn’t fix it. And now project is gone. Cool.
You just need to load the project again, because the OT has “forgotten” what the active project was.
I will, as soon as the main problem is fixed. Because, currently, the proj / part / aed / mix / arr buttons do not work / respond.
Thanks your help.
Does it even behave in that strange way when you start it up without a CF card inserted?
Normally it should boot then in demo mode eliminating another possible error source (a corrupted CF card).
Not responding buttons may also be caused by an other “sticky” button, btw., but this should be testable in test mode by pressing each button and see if they react normally.
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No, the device does not return to normal when starting it without CF card.
All the LED lights are arranged in an odd color scheme that is the same each time i start the device. No flickering. No glitchy behavior, which led me to believe it was a strange ‘mode’ that i accidentally activated…
Still awaiting response on the ticket. Elektron is slowly becoming more trouble than its worth… there’s always something going off with these things.
Have you tried test mode to see if it gives you errors?
What Elektron said?
They said its likely the UI PCB that needs replacement. So, its NOT some secret “party mode” like i was hoping. Such a pity. Its been SO hot here lately that i wonder if i dropped some sweat into it 
Either that or im just ‘lucky’.
Sending it in on warranty.
Thanks for everyones comments / help!
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Just saw this topic because I got almost the same random color issue on my OT, the strange thing Is that, after switching off and on the unit, the bug was gone, I really hope this is not happening again. By the way, can you tell me what was finally the real bug that Elektron found?
What is your OT’s manufacture date?
Update: i had no more issues these days
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Hi, @WERKAANZEE, is the pcb UI the one with the tact switches on it? I know a guy who has the same problem, I’ve taken apart another OT in the past, but I can’t remember exactly how it was done.
Has the whole pcb been replaced or just the culprit component. It looks like a multiplexer problem, LED matrixing.
@Outch303909: The OT has 2 PCBs inside: the logic board that has the CPU on it and the UI board which houses the screen and all the buttons, switches and lights.
I wonder if it isn’t a bad contact, it might be worth it to try reseating the internal connectors between the boards.
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Thanks @kj.
I just had the exact same issue as OP and was terrified!
I had just been touring with my MKII OT (for the first time) and played a show with it succesfully outdoors, no issues at all. I have a proper Analogue Cases case for it, so thought there would be no issues even if it got bumped around in my carry-on luggage. I got back to the states and went to work on it some (booted up fine), but then got LEDs that look very similar to OPs. After fretting about it and creating a support ticket, I saw somewhere that other elektron devices can behave this way when they get to cold.
As it turns out, I had stored my carryon bag with the OT inside it in an unheated part of the airbnb I was in during the winter, and it must have gotten pretty cold in there (maybe 40-60 F)? I moved the OT somewhere warmer and let it run all night, and then the next day all but one of the LEDs returned back to normal! Then on the next day, after using it even more, even that single LED returned back to normal functionality ! 
Very curious about others experiences with this. I have some electronics experience, and know soldered connections can falter in extreme temperatures. But I would hardly classify what I exposed my OT as “extreme”. This would definitely makes me think twice about playing a show outdoors in the cold with the OT, which is kind of a bummer.
Also I wonder if this issue might be foreshadowing future issues with my unit? I’ve been using it a good amount since without any problems, but I hope all the solder+capicators are still in good condition…
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