My Oppo hums


With my new Burson PI-160, my Oppo now hums at the speaker with the volume turned up and when still connected via ICs and on another input, passes the hum on (albeit slightly with nothing playing). There is no OFF feature on the Oppo, just standby. It was never present with the older Burson or the Classic 6.1 that I still have. If I disconnect the Oppo, the hum is gone. The mickey mouse IEC has no ground plug and that may be the problem: won't know until tomorrow when I get one with a ground plug (if they make one) Has anyone else experienced this?
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Does the Burson PI-160 use the equipment ground, third wire? If so you may have a ground loop problem.

If you have a CATV or SAT cable system and it is connected to the audio system in anyway then the hum could be ground loop related....

For a test disconnect the CATV or SAT coax cable from the system. Check for hum. No hum buy a CATV cable ground isolator. Jensen makes a good ground isolator.

The Jensen will not work on a SAT system.
Summitav & Jea48:

Thanks! That seems to be the culprit. I disconnected the cable COAX from the cable box and 'viola!' the hum disappeared. On all inputs. Now I'm off to get that Jensen ground isolator.
You guys on A'gon are the best.
Dont get the ground isolator until you have your cable/sat guy come out and fix earth ground, its their problem to fix. My cable co fixed mine for free last year.
Why spend your money if you can get it fixed for free?