I looked better at the scope. decided to not botyher about switching spikes.
I discoveryed that with the first test i forgot to select channel 2.
So both channels have the same switching spikes.
After so many years start to rememb er how the scope worked
But, now a strange problem.
I connected the scope calibrate to ch1. and adjusted the setting so i see a square waveform.
After that i did set ch2 to the same settings and moved the probe to ch2 and switched it.
But the signal on channel 2 is lower then on ch1.
After that i have connected my power supply set to 12 volts to the scope.
Ch1 i need to set at 5 volt/div. But if i set ch2 the same i need to switch it to 0.5volt / div to get the same result.
The scope is defective after a long time of no use ? Or something else did happen.
Well i can still use the scope for basic things. but only on channel one for now.
It could be possible that ch2 gain need to be adjusted again, and that things then work fine. (VR57)