I opened up a DCC170 today and I noticed it was repaired in the past. It looks like a professional repair, there is even a small PCB attached to it near the battery power cable (where its connected to the PCB). Anybody saw this kind of repair before?
This might be a early production model. We have those at the dcc museum as well. They came from Gijs Wirtz and Tieme Kuyper. You have to leave it and should be glad it works as I believe the boards might not be interchangeable with other dcc 170 and the service manual only partly helps.