K7200

K7200: I just assembled my K7200 I can regulate voltage and current, but the display panel does not give an indication.
Lights are on, but just a - sign and a dot are illuminated.
What can be wrong?

Are both displays indicating the same ?

Yes, Thanks for your reply.
But I solved this problem.
I checked the print and found the mistake.
The Amp reading is perfect,
The Voltage reading is unstable.
What can I do to solve that problem.
I read something about grounding the frontpanel, but what point shoud I connect to what point.
Regards,
Frans van Mook