A couple of weeks ago all my X10 devices stopped working, i have a receiver (set to zone A) that plugs into a power outlet and a different receiver downstairs (set to zone B) and remotes that transmit to the receiver that activates the sensor in the light switch that turn on/off or dim the lights.. I changed the receiver, no difference, I changed the remote, no difference. I changed the batteries, no difference. I unplugged the repeater the dryer plugs into, still not working. I dont have a hub or connect to the cloud. I am using X10 HR12A Palmpad remote control with RF Plugin Transceiver Model TM751. The light switches are predominantly Insteon Switchlinc V2 Dimmer Model 2476D or Insteon Model 2477D. I also have lamp modules Model LM 465 and a SignaLink repeater Model 4826A that plugs into the dryer outlet. Both zones stopped working at the same time and I'm pretty sure I havent plugged any new electrical items into the wall outlets. I have just added a PLC01 Powerline Repeater X10 hoping to boost the signal but that made no difference, still nothing working. The PLC01 does have an led on the front that is supposed to blink twice when it receives a command from the transmitter but it doesnt blink at all. The only thing working is when you press the on/off buttons for 1st device on the remote you can hear the click of the transmitter turning on and off but no commands are getting through.