Hi,
I wanted to share with you the solution to the problem that my Denon unit presented, described above.
Finally I have been lucky that the user @DJ_Manolo , an electronics expert, with a technical service in the country where I live, Spain, was kind enough to contact me to offer to repair the unit.
Once in the repair shop, the fault diagnosis was as follows: “This unit has no electronic problems. The problem is mechanical. We have disassembled the motor piece by piece and removed the oil it contains, which is very thick when cold, and the motor is difficult to move. We have replaced it with a specific one for turntables, more appropriate in our opinion and the unit has not failed again. The synchrony is now correct.”
Once I got the unit back home, I was able to verify that it was and that my Denon SC5000M unit now worked perfectly, almost, I would say, better than factory, with no pitch lag or jitter.
I am very happy with the performance of my Denon SC5000M power unit after the repair.
I had previously contacted the official Denon technical service and for them it was an unfeasible repair, they avoided it. In the official technical service they only change modules, circuit boards, motors… In this case, they would have given me a new motor that, almost in all probability, would have come with the same factory defect. Imagine the cost (approx. €300) plus labor (unaffordable).
I am enormously grateful to Expo-Electronica Spain and, more specifically, to @DJ_Manolo , for the repair and tuning of this unit. The treatment, friendly attention, professionalism, quality, efficiency and speed unmatched. They have a very cheap pick-up and delivery service, so I didn’t even think about it. 100% recommended for other users in Spain, especially in DJ equipment and professional audio. In addition, the technician has experience as a DJ, which makes him, unlike other technicians, understand the demands of the profession. Many heartfelt thanks to Manolo for this “impossible” repair, in which he put all his dedication and genius to solve it, for an affordable cost.
I leave the photos of the disassembling of my Denon SC5000M for repairing.
Regards.