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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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Showing 6 responses by nonoise

nonoise's avatar
nonoise OP
10,547 posts
 
Actually the Burson PI-160 is an integrated: sorry I didn't mention it as such. But I see your point as it wouldn't matter if it were a DAC or integrated. I'll try what you suggest later this evening.
Thanks.
nonoise's avatar
nonoise OP
10,547 posts
 
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.
nonoise's avatar
nonoise OP
10,547 posts
 
Not to worry. When I asked around for the Jensen unit, no one had it in stock. Jensen is about 15 minutes from where I live and they'd have to make it for me for about $59. I found a cheaper alternative for $3 at a local electronics store that they say will do the same thing. They sell lots of them and get no returns. Its worth a try. Will let you know.
nonoise's avatar
nonoise OP
10,547 posts
 
Chadnliz:

I got Time Warner to come out after some haggling. Seems that since my equipment is not Time Warner's then the problem was mine to solve.
LOL.
After patiently explaining it to them again, and with a request to speak to a supervisor, I got a free visit for this Saturday. By the way, the lady I spoke to over at Jensen said that this happens all the time, around the world, which is why they have none of the ground isolators in stock. They would have to make me one.
nonoise's avatar
nonoise OP
10,547 posts
 
Jea48:

I've written that down to remind the service technician.
Thanks.
nonoise's avatar
nonoise OP
10,547 posts
 
Just had the Time Warner tech over and claimed he's never experienced this before. He was sincere. I also got a phone message (before he came) from TW stating that they think they solved the problem.

What was unbearable at, say, 1/3 volume is now gone and it doesn't manifest itself until about 5 clicks from full volume (that's about 13 steps higher than I would ever listen). So the hum is now, not a problem. The tech said he had one other call to make that complained of the same problem and thought it might be related, and to confer with his higher ups to figure this out.

Looks like I'll just break down and get the Jensen to head off any future problems. Thanks to all for your input.
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