A few days ago my second Tunze osmolator broke... So, now I have two Tunze Osmolator / Tunze Water Level Controller 5017 that, after a few years no longer can output the amperage to drive its pump. Anyone knows how to perform a DIY repair of these? If I disconnect the pump a can still measure 12V on the pump output but it goes down if a put any load on the output, so its good except the pump drive circuit. I've also tested with a different pumps that are verified functional, so I know the problem is in the main unit. I guess its a common problem since both my units got the same problem... Ps: I do have the knowledge and tools to swap out a faulty component, but I don´t have the time to reverse engineer the design to figure out where the main problem is.