I had a simple wireless switch solution installed nearly 10 years ago to allow me to turn on backyard lights which are powered from the garage from inside my house, without needing to turn all the power to the garage on/off. The design includes three X10 components -- an SS13A switch, located inside my back door, about 30' from the detached garage, a TM751 transceiver module, which is plugged into an outlet in the garage, and an XPFM fixture module that is wired inline to the power feed for the backyard lights.
This design has worked consistently for years and suddenly stopped a couple of weeks ago. I started by replacing the battery in the SS13A (no luck). I tried using the push button on the TM751 to manually control the lights, but that didn't make a difference either. I ordered a replacement fixture module off Amazon, but I noticed that the XPDF Dimmable module was only a couple dollars more than the XPFM, so I got that. I installed the XPDF and still nothing, although at some unknown point in trying various clicks and points, the power came on to the lights, but I could not turn it off.
Today, I found a spare TM751 that I had not used before (BTW - I've already checked to make sure the house and fixture settings are all maintained). At first, that didn't make a difference, but when i took a spare SS13A out to the garage, I finally had something close (or at least closer) to success. If I'm standing less than 15' from the TM751, and press the ON switch 2-3 times, the light comes on - not a clean "ON" action, but more like a gradual dimm-up. when I click the switch off, it dimms-down to an off. These are not long dimming actions (less than a second), but they are obviously different that how the systems acted before.
My real problem is that if I'm MORE than 15' away, nothing works (and the backdoor of the house is still 30' away).
My next action is going to be to reinstall the original XPFM module to see if the dimm-up/dimm-down action goes away, but I thought I'd see if anyone in the support community can provide advice.
Is there a chance that a neighbor installed some piece of electronics that has blocked my signals?
What action is supposed to happen when I push the button on the TM751? Even when this new SS13A is controlling the new TM751 (from less than 15' distance), I don't hear the push button click, like it does if I actually push it.
What other advice can anyone offer?