I'm new to the whole DIY scene. Till now I just repaired gear, recapping or replacing faulty parts.
Now I'm faced with building/buying the right PSU for two MV 810/2 preamps.
I've already read this thread Need help with a power supply for two MV810/2 preamps.
about the topic, but my Kölleda MV 810/2 is a little bit different.
I've recently purchased two MV 810/2 and am trying to get them running. After recapping one, I've managed to get a signal out of it, but it's really noisy (with a big humm). When I touch the chassis the high hissing noise goes away, but the humm is still there.
The schematics of the MV 810/2:
At the moment ground is A2a/A2b.
I'm using a psu with 24 Volt. RS-35-24, Mean Well RS-35-24
- volt is connected to pin A3b
+ volt is connected to pin A3a
Should I solder another ground connection to the chassis from pin A3a? What am I doing wrong? (probably a lot
Thanks in advance!