UPDATE:
As touching the pins was the only indicator for help I tried different resistors to short some pins. Dirty but seems to be a way. I could identify one pin which is affecting it. Oscilloscope tells me it's a 3.2v stable. Anyway may investigate more later. If I connect it with one MOhm to the pin beside it, it's getting better. The lower I get with the resistance the better it gets. At a value of 510 Ohms it almost disappeared.

I think I'll solder this resistor down but to be honest it's not really satisfying me as I have no clue what it's affecting etc. I think 510 is still a relatively high resistor, especially with only 3.2 V applied.
What do you think about this? Is it somehow making sense to anyone?
Picture: The two pins I am talking of marked with black points. It's a micro HDMI, but I can't get any Theory around with the pinout either.
Thanks for any explanation
