Hah, right in time. My trusty GPS-4303 has started misbehaving yesterday evening. If I set CH2 to say 10V when output is off behaves OK, then I turn it on and it drops to something like 1-2V , the meter shows the correct 1-2V as it is but it is annoying. Does anyone has the schematic for these power supplies ? If you do, please let me know if you can share it.
In rest, to stay on the thread topic, these are solid and nice power supplies. The 4303 was my work horse for long (4+ years) and I got it used. I have other more fancy but this was always on my bench, quiet, easy to use no fuss