Sorry for writing in english, but i think this is the only Forum which can help me.
I got a Denon DSD 500 with a defect display. It is a common failure and you can find many devices sold with a non working display.
I thought it's a fuse like in some denon receivers but in the service manual I couldn't find any fuse. Every other function is working great, so I think the different internal voltage levels are fine. The service manual says that the oled is powered bei 12v and 3.3v. But nearly every function or other voltage regulators are connected to the 12v line. For example the 3.3V regulator is powered from the 12v regulator. And the voltage regulator for the dsp is powered by the 3.3V line. And since these things work, I think there is no problem with the power supply.
Where can I search or does someone even know where the problem is?