I have an old Sunbeam ultrasonic Humidifier. The fan works, but the transducer circuit is blowing the 1A fuse. When I pulled the rectifier diodes out I found them to be blown. What I noticed is that before the 2nd fuse broke the positive terminal of the transducer was drawing significant amount of current to the point of melting the insulation a little. The transducer doesn't look cracked and is not shorted.
Now I found this thread:
https://www.electronicspoint.com/threads/ultrasonic-cleaner-not-working.64155/
This person had a similar problem and I am just not sure how exactly they fixed it at the end. There was some mention of capacitors being faulty, The cap packages in my circuit look ok and I dont have a multimeter that is capable of testing caps. Is it possible that the only thing they changed was the fuse and rectifier diodes?
Edit: added a line describing the transducer condition
Edit 2 Grammar
Now I found this thread:
https://www.electronicspoint.com/threads/ultrasonic-cleaner-not-working.64155/
This person had a similar problem and I am just not sure how exactly they fixed it at the end. There was some mention of capacitors being faulty, The cap packages in my circuit look ok and I dont have a multimeter that is capable of testing caps. Is it possible that the only thing they changed was the fuse and rectifier diodes?
Edit: added a line describing the transducer condition
Edit 2 Grammar
