Hey guys. My simplex 4051 sounds terrible with unfiltered power, and doesn’t even work on filtered power from my panels. Just wondering if there’s something I can do to clean it to get it to work or of anybody has any ideas. Thanks!
Oh and the metal plate does move in when it’s running on filtered power. It just makes a quiet screech sort of. Not a horn sound. Other horns work great
Okay, there’s four nuts on the back that control the electromagnet’s position. If you be very careful you can move those nuts to change the magnet’s position. Do it right and you’ll find the sweet spot where the horn is loud. If you watch my video where I converted a 4051 to a 4050 you can see me adjust the nuts on my horn.