Denon DN-S3700 user hacks, solutions, fixes,


In the wild, there are these legendary units still working fine or with minor defects.

Lets make them last even longer, cause they are simply COOL :slight_smile:

This topic is to help owners with maintenance.

Please share your experience in finding & replacing parts, software & hardware solutions, improvements, interesting projects…


I have 4 of these and refuse to give them up! Absolutely love them! Only issue I have is sometimes when I put a CD in it gives me a load error. Powering them on or off doesn’t fix it. Tried a laser cleaner and that doesn’t do the trick either. Seems the laser gets stuck or something because it requires a soft bang to get them to read the CD. Anyone know of any other way to circumvent that issue?



Same thing with all 4 of them?


The easy answer is “both” but is this a problem with shop bought CDs or home recorded CDs?

It would be extremely unlikely for 4 separate machines to suffer and identical issue.


Only with 2 of them. One that I take out on the road and the other that stays in the studio. Usually with the Serato Timecode CD. Not copies I burned at home either. Factory originals.


yeah big up the 3700’s, i’m a 3900 user forever.Anyone here replaced a start switch (plastic one) here? I bought the circuit/underbonnet pdf file for the 3900 but im not too confident about going in yet!


having some issues with my 3700s both of them having a delay effect with the movement of the platter and the sound… I’ve tried to get the downloads for the firmware. however i can’t seem to find the model number on the Denon site in the product list… HELP!!!


Platter delays wont be firmware related, especially not on two players simultaneously.

Is the delay apparent when using CDs, or with DJ software, DVS/timecode ?


using the time code CDs with SL3 software


In the PRESETS menu, makes sure that the Audio Curve option is OFF for any Timecode/DVS software use.

Audio Curve is kinder to speakers etc, but that kindness sort of “distracts” DVS/control tone software.

Other than that, it’s just the usual trial and error of getting the DJ software latency setting down low enough to get rid of any delays in performance, but keeping the latency setting high enough so that older PC’s or slower PC’s dont distort the audio.


Ok thanks a lot DJ_Boothe. I dropped it down from 10 to 5. And turned off the curve. Hopefully that helps. I’ll keep you informed.


Bringing new life to these decks!

Features added:

Touchscreen 10 points, video output & mixing dual layer, dual sound card & up to 99 decks/layers & internal mixing, up to 6TB storage,… :slight_smile:


One of my platters stops after 20 minutes of of practicing on scratching… The music will still keep playing though the platter will no longer have any movement… I have to shut down the deck for a few minutes then platter will start to rotate again. I am using the USB audio files when this happens, though it occurs with CD’S TOO. The other deck works fine… This just happens when i practicing on scratching techniques… Any help would be appreciated…