First, what many others have already written, I have attached the part and it worked immediately properly. Now, however, we have high summer and the room temperature rises above 25 ° before significantly. After several hours of operation, the screen then first short interruptions that are becoming more common, until it finally remains black. As I suspected a temperature problem, I propped the plastic case once. The small board is wrapped tightly with tape. Furthermore then copper foil is wrapped, which is soldered to the cable shield. All the wrapping I have removed and operated the adapter so without housing. Sporadic outs there were after prolonged operation but still. Then I made an improvised heatsink slightly thicker copper foil and stuck with 2-component adhesive on the converter chip. Now it works even in the heat. But the EMC limits will no longer be respected ...
