Hum problems solved

[wilkev]

I just used a three prong adaptor to bypass the ground and that took away all of the hum

[bryant]

exactly where did you connect the three prong adapter,
between the wall and strip outlet, computer and strip, computer and wall.
Please tell us how everything is wired and exactly where the adapter is placed (between what two sources)?

Thank you.

[wilkev]

For my laptop (Acer 5610) I plugged it into the outlet and Just now I plugged it into a strip and it worked good either way. Just to test it, I took the adaptor off and plugged it into the strip and I got the high pitched whine back. mine actually is more of a whine than a low hum. Hope it works for you.

[mindonstrike]

Originally Posted by wilkev

For my laptop (Acer 5610) I plugged it into the outlet and Just now I plugged it into a strip and it worked good either way. Just to test it, I took the adaptor off and plugged it into the strip and I got the high pitched whine back. mine actually is more of a whine than a low hum. Hope it works for you.

If you are going to use an adaptor to defeat the ground for your laptop power supply I would set it up so that only the laptop is ungrounded. Since the laptop case is all plastic there probably not much danger there, however if your mixer and/or other metal encased equipment that might be plugged into the strip develops a ground fault without a way to shunt that power to ground and trip the breaker, you may become the new path to ground

Sam

[wilkev]

Yeah I use a strip when I do a show and the laptop is the only thing that gets the 3 prong adaptor. I just bought the laptop and the hoster program so I was just setting it up in the house on the kitchen bar top when I first noticed the whinning sound. But otherwise it will be the only thing not grounded. (provided the venue has grounded outlets) Thanks for your help!

[bryant]

Originally Posted by wilkev

For my laptop (Acer 5610) I plugged it into the outlet and Just now I plugged it into a strip and it worked good either way. Just to test it, I took the adaptor off and plugged it into the strip and I got the high pitched whine back. mine actually is more of a whine than a low hum. Hope it works for you.

So are you saying the adapter is between the strip and the laptop, while the strip goes directly to the wall outlet with no adapter. i want to duplicate this. This is why I'm being so precise here?

[goonie227]

You are playing with your life here guys buy a hum eliminator and don't mess withungrounding your system.

[wilkev]

yes that is right the only thing that is ungrounded it the laptop power supply. I am not to worried about getting shocked from an ungrounded plastic power supply.