Start it up in test mode (hold FUNC and switch it on, press trig 1 to enter TEST MODE). Should say 0 errors.
Hold trigs 3/4/5 sequentially to do a quick LED test - they will light up all buttons in R/G/B (there’s no Blue light for the 8 x PAGE lights so don’t worry about that)
Give all knobs a turn and watch the screen for feedback - there should be no jumping of the white line on any params.
Press all encoders down and check the screen for confirmation that the press was registered
OR just say LOOKS FINE MATE CHEERS and pay without checking anything. Like I do.
Ask him if he retained the receipt from the original purchase. If you can prove date of original purchase to elektron (in the event of a warranty repair), the warranty should go from that date instead of the build date on the bottom of the machine.
You’ll have a warranty either way, but DT2 was released close to a year ago now, so depending on where and when it was originally purchased, that extra bit may amount to some additional 10% - 25% of the total original warranty.
If you can get the receipt, or a copy of it, even if you don’t ever end up needing to do a warranty service it still sounds good for peace of mind. Good luck, have fun!
So as to not make it sound like you’re saying “did you steal this?” you would probably be better to say “I read that the elektron warranty starts with time of purchase when you can prove the date of the transaction, otherwise it will go from the build date on the sticker…” and lead into the question of does he have the receipt.
Just thinking of how you could phrase it to make the request sound more innocuous rather than accusatory.
If you don’t go for putting it in Test Mode, at the very least I would definitely give all the encoders a few clockwise and counter clockwise spins (to check for skipping). I had an OT with skipping encoders, and it felt like being cursed by the devil.
Press record and trigger all the sequencer buttons to make sure they light up. Hit each of the menu buttons Sample, Filter, Amp, etc) to make sure the transport controls work. Bring headphones to test the headphone jack. If you can hook up to some speakers, try that. Last, I’d try the input jacks as well if you can, just to make sure it can hear incoming audio. I did all this when I bought my used Rytm 3 years ago.
fwiw for future readers and future advice giving - all the new Elektrons use analog pots, not encoders like the og OT … i.e. analog, not digital … they aren’t without their own issues, but that kind of skipping ain’t one
here's internet copy/paste
Sin/cos potentiometers are specialized position sensors that output continuous sine and cosine signals, enabling precise angular position measurement and control, unlike traditional potentiometers that provide a linear resistance change.
Here’s a more detailed explanation:
Function:
Sin/cos potentiometers utilize two wipers on a resistance track, one for sine and one for cosine, with a 90-degree offset. As the shaft rotates, these wipers generate continuous sine and cosine signals, allowing for precise angular position determination.
Applications:
These potentiometers are well-suited for applications requiring high precision and reliability, such as robotics, automation, and motion control systems.
Advantages:
Precise Angular Measurement: The sine and cosine signals provide a continuous representation of angular position, enabling accurate control and feedback.
No Dead Zone: Unlike standard conductive plastic potentiometers, sin/cos potentiometers provide continuous signals across the full 360° range, eliminating dead zones.
Directional Information: Combining the sine and cosine signals allows for the generation of a digital incremental signal with direction of rotation information.