I hope no one minds me starting this thread over but I could use some help. I have several X-10 Powerhouse switch modules through the house (<2000 sf) all working fine except two (originally the problem was with one but I added another). Both of these wall switches refuse to work as long as I have either of two computers turned on. The third computer doesn't seem to bother it. Without the computers on, all switches work just fine. I recently added a Leviton 6201 amplifier/coupler thinking that would clear up the problem with noise interference but to no avail. Would changing the house codes or moving the transceiver help or do I need to invest in a noise filter? The prospect of another investment has my wife leaving the yellow pages open to 'Attorneys' so I'd like to know of any alternatives.

A second note to this problem. I spoke with tech support at one of the internet vendors and he suggested that the problem was the Powerhouse wall switches and that I should throw them out and get Leviton Intellisense switches. Has anyone else solved this problem by using the Leviton switches? After checking the price I'm sure that replacing all of my wall switches would make some divorce lawyer giggle.

Doug,

Sounds like a noise problem to me. Try turning the monitor(s) off with the computers on and see if you still have a problem. Most likely, it's the monitor(s).

You can plug the 'problem' device(s) into one of these and it should help: LV6288 Plug In Noise Filter

Try this site:

[Link: smarthomeinc.com]

Hope this helps!

Scott Funk

You don't have any parts of your computer plugged into an X-10 unit at all, do you? Or even directly into the wall???

Most switching power supplies are going to cause issues of that sort when you're trying to send additional "information" down those lines.

Make sure the computer and monitor are plugged into surge protectors at the very least.

I was under the impression that surge supressors were not a good idea since they dump the noise back onto the AC line. The computers are on outlet strips plugged directly into the wall, to into an X10 unit.

Excuse me, I meant to say not into an X10 module.