Hi there Community!
I’m having trouble with 2 x SC5000s. And I can’t get anything on the display. Does anyone know a way to debug them? I really think that this is a mainboard problem. If someone else encountered this issue/error, please let me know and we’ll go from there.
I would really appreciate some user help, Denon is lacking support, components, will, you name it 
Hi @Raoul_Demi
Can you give us some more details because what you are indicating does not seem very clear.
A video would probably help to better understand what is happening exactly if you could post one.
Hi @Gaian and thank you for your reply.
Of course, I will post a video and some pics. Interesting point is that they behave normal, even boot and I can see the logo in the middle of each jog, also I can see them linked to the laptop (via usb) and I can do the firmware update or downgrade. I can even switch layers, but nothing on the display/touchscreen. Except backlight. That one I can see. On both.
Btw, I saw that there are only a few pictures of them dissasembled, I have a lot of them and know every inch now. For the ones interested, I’m here to help.
Ah here we have the end of the story, the ribbons connecting the screen to the motherboard are damaged following a human intervention inside the unit.
In this case the best solution is to contact technical support to obtain the damaged parts or consider repairing the units
Maybe @Rob_Gaudet could give you some help here.
I’m surprised that two separate SC5000s both needed their display cables to be removed.
Was someone trying to feed display signals to HDMI or something ?
Don’t be surprised. They are made of very cheap plastic. And they brake. In my opinion, the build quality is near to “disposable”. I mean, come on, for the amount of money they cost, very fragile. You can have wifi and bluetooth and Tidal and dual layer but when you put the jog wheel on some cheap mouse scrolling wheels…
The initial work started after some backspins and brakes on the jogwheels. The tiny mouse wheels fell out of place. The units needed fixing, so after this was fixed, the ribbons broke. One thing leads to another as soon as you remove the first screw….
Trust me, the human intervention did everything by the book and they still broke. Cheap, very cheap. Everything inside.
I did contact technical support, no luck. No stock, no nothing. Only available on backorder with advance payment and weeks/months of waiting (subject to change, not in the client’s advantage).
And btw, you don’t want to know about the costs involved….IF you have the luck of receiving them after months of waiting, and mailing and trying to reach out
With or without human interventions, the forums are full of problems related to hardware/software/display issues on these units
I would really appreciate it. 
Hi @Gaian,
Here you can see a short video regarding the issue.
Best regards, Raul.
Hi Paul,
If the flexible ribbons connecting the screen to the main PCB are damaged, it is logical that you no longer have a display, since they are the ones that send the display.
You must therefore replace them with new flexible connection ribbons.
Only InMusic will probably be able to provide you with these parts, or at least the references of these ribbons so that you can possibly find them somewhere on the internet.
You can possibly try to contact instrumentalparts.com to see if they can provide you with the part or its reference number.
The best thing you can do is contact Denon DJ support:
Hi Gaian,
The flexible ribbons were changed, I ordered new ones. And still, nothing on display.
Are you sure you didn’t connect the ribbons backwards?
Maybe @Ghiata_Loredan should help you.
What do you mean by backwards?
in the wrong way
I’m 100% sure that they were connected the right way. I used a ‘before’ photo
Are you also sure that the ribbon’s connectors on the main PCB side and the screen side have not also been damaged?
I cannot tell about the inside of the connectors on the PCB and screen side. The ribbons are brand new. Is there a way I could check these connectors inside? they are so slim…
I wasn’t necessarily thinking about the inside of these connectors, but about the general condition of the connector, doesn’t it seem broken or damaged in appearance, does it still seem to be correctly soldered on the PCB/screen.
These connectors are particularly fragile and can be damaged very easily if they undergo constraints.
If you now get absolutely nothing on display, it’s time to put the old damaged ones back and see if you then again get the logo.
If you do, then you know your new ribbon cables are not OK.
might also (and I’m afraid to say it) be the case of a GPU failure. it’s like a small pc inside. 4 GB RAM, BIOS chip, firmware chip and CPU & GPU all-in-one…
I can get the logo with both, but I’m talking about the Engine logo on the small display in the middle of the jog wheel
The fact that the jogwheels screens work and display the Engine OS logo perfectly makes me think that the CPU and the whole system is working properly.
The problem is in my opinion only at the level of the display of the main screen. So located somewhere on the path of sending the display to the screen
Have you seen the behaviour from the video I sent?