I am fighting some really odd problem in an audio D class amp that is emitting a loud hum from the driver with only power going to it. Many have indicated the PS is highly suspect but I can find nothing wrong so far. Using a cap meter on my filter caps, they read about 15% higher than stamped.
My next thought was to take a closer look at the bridge. Diode testing shows it good but I am wondering if powering it could show a different story? Is that unlikely? Just quickly applying 120V to it, I get 107V of DC with an RMS DMM which is in the ballpark.
Should I do some other testing to prove it out or look at something else?
My next thought was to take a closer look at the bridge. Diode testing shows it good but I am wondering if powering it could show a different story? Is that unlikely? Just quickly applying 120V to it, I get 107V of DC with an RMS DMM which is in the ballpark.
Should I do some other testing to prove it out or look at something else?