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Harsh Tokerman
Oct 25, 2004
Every once in awhile I like to hook my laptop up to my TV to view things a bit larger. That works fine, but when I plug my audio into our receiver (3.5mm? headphone jack -> l/r rca jacks) there is a lot of background static on the line.

I can get this to stop if I unplug my laptop from the power source, but it's a beast of a laptop and the battery needs replaced, so that doesn't really work. Can I buy a different type of audio cable to combat this, or am I just SOL? the power supply's been replaced once before, and it's done it with both.

The laptop is a dell inspiron 9100, the receiver is a Harman/Kardon AVR 335 though it does it regardless of the receiver.

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Harsh Tokerman
Oct 25, 2004

pim01 posted:

You are experiencing a ground loop. To get rid of it, you'll need to isolate the two grounds of the systems, by using a ground loop isolator, surprisingly :). Radioshack sells one for $17. It should be adequate, but does cause some loss in quality.

Thanks! Now I must find a Radioshack that has some in stock. Is this a problem with most/all laptops, or is it not very common?

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