I can see on the current consumption of my switching power supply how it behaves. So i found out the problem resides on the mainboard, because i swapped the graphicsboard to a working unit where it also works fine. Funny, but very interesting for testing purposes! But it would communicate over CAN and would also play music of this is done while the Satnav is running. Of course it is of no sense, because without the HMI one is unable to do anything with it. They can operate indepandently, so it is possible to pull the graphicsboard (with the touchscreen and buttons on it) and the mainboard will boot properly. The system has two main components connected together, the mainboard and the graphicsboard. I've done serious research into that issue and also some repair tests. Then it keeps off until power is pulled and put back again. After this, i can be pushed on two more times, where it does the same. It just keeps running for some seconds and all seem ok, but then it shut off the display. One of my current projects is to find out what causes the Blaupunkt (Bosch) "Travelpilot NX", which is build into many Ford vehicles, to shutdown after powering on. I'm also a member in other electronics-communities but none of them is really handling this. I also run a (German) website where i try to publish some of my solutions and backgrounds to it. I'm highly interessted in any automotive electronics and also done some research and projects in this area. Maybe this is the totally wrong audience, so please be kind and tell me.
Hello! I'm new to this forum and joined in the hope to find people like me, who are interessted in repairing things and let other participate.
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