LEDs work now and I'm happy to announce that it has stopped to blow fuses, but please doesn't ask wich step was the right one.
Things done:
- de- and resolder J20 and the voltage-regulators
- new crimp-connections for this section
- used other LEDs
- exchange the test-probes from my multi with new ones (that I had bought already a week ago or so)
Minimum one of the things above has done the trick, don't be able to say wich actual.
Followed ya model I get now: +4,9V, 0V, +4,9V, 2,5V [against ground], thanks for ya effort.
But my 9090 shift slightly out of symm as well, because -14,95Vdc, but "only +14,55Vdc - more component tolerances and measuring errors than realy a problem I think.
edit: So, now it's hopefully more understandable, was not realy my best morning this morning...