So far, JACK! ...

The cleaning of case and pcb dident help .. It did power up right away, how ever the magic rotary bug is still there..

And I even aquired something ekstra.. now there are also some dim white lines? random on the screen.. the power lamp is lit red, its just fading very little on/off.. maybe thats related to the white lines..

Maybe there is some kind of internal error in the cpu? Although it seems like the "control unit" of the buttons that is malfunction.. If I only knew specific where it is on the board...

crap! knew I was gonna use hours and get nothing back... guess the next part is the soldering...