Humdrumaudio
Member
- Joined
- Sep 25, 2018
- Messages
- 9
Hello, I've been working on this Ampex 350 that pegs the meter ever time it's output is plugged into another piece of equipment(any other piece of equipment). To me this seemed like a grounding thing but everything checks out from the schematic to the unit, except that I can't find the output transformer's core pin to verify it's being grounded (I figured this was the issue). There are two unused pins on the output transformer, and after verifying that they aren't part of the windings, I grounded them but it didn't fix the problem.
The "hum" that is pegging the meter is 60Hz and only reveals itself when plugged into another piece of equipment. Also the volume doesn't impact this hum. Any ideas?
Thanks
The "hum" that is pegging the meter is 60Hz and only reveals itself when plugged into another piece of equipment. Also the volume doesn't impact this hum. Any ideas?
Thanks