I've completed a build of a ezamps.com LM3886 kit. It consists of the PowerZero Power Source power supply, with the upgrade to the 160VA transformer, and 2 point Zero LM3886 modules.
Here is the problem. If I power up the amp, with or without source connected, it will emit a loud, 60 hertz-ish buzz. Here is the strange part...this happens only around half of the time I fire it up. If I leave the amp alone, not changing any other conditions, it may or may not buzz.
Any ideas where to start on hunting down the gremlin?
Dave
Here is the problem. If I power up the amp, with or without source connected, it will emit a loud, 60 hertz-ish buzz. Here is the strange part...this happens only around half of the time I fire it up. If I leave the amp alone, not changing any other conditions, it may or may not buzz.
Any ideas where to start on hunting down the gremlin?
Dave