Brian H

Sounds correct. The RJ45 serial 2413S PLM end only had three sires connected. From other posts here.

Be careful. The RJ45 network style serial connection on the PLM end only uses three wires. Other pins on the PLM end are not serial like send and receive TTL level signals. That should not be connected to anything.

Another symptom is a dim or out LED on the side. Can be rebuilt built. These days most go the new latest version PLM.

I believe you also had post on the Insteon forum. I posted a link to the manual there. Though you may already have it since you are using on already.

Yes the dual band modules. Do receive the Insteon RF messages and send them back on the power lines. The power line only devices. Have to be reachable by that dual bands power line communications message. The 2856D you can control it is receiving the commands. The ones even in the same scene that do not respond. Are not receiving the commands. It sounds like you have a power line communications problem to the 24856D modules that do not follow the commands. Any new or moved electronic devices that maybe making power line noise or have become a signal sucker? You may try a test and start unplugging other electronics on the circuit the unresponsive 2856D is on. The 2856D is a plug in module. Try moving it to a different circuit and then see if the response changes. If you have any phase coupler to get the two incoming power lines. It may have failed. You may want to hold off on the factory reset and see if anything else. Like a signal sucker, noise maker of failed phase coupler is the issue.

Yes it is old and 26 pages long but you should find information in it. https://forum.universal-devices.com/topic/13866-repair-of-2413s-plm-when-the-power-supply-fails/

Try clicking on the data line it is displaying and chose of you want a LAN or cloud connection. I use LAN myself. If the LED on the side of the PLM. It is an indication it has failed. If you are handy there are repair threads on repairing them.

Only the 2477D and 2413S PLM will receive Insteon RF commands. From Insteon controllers like a Remotelinc II. As the rest are power line only. One other thing to think of. If older ones are using the original I1 protocol. A restore will use eight single bit messages and eight ACK messages back to write one byte of data into a modules link database. So it will take time for a restore especially if there is poor power line conditions and retries have to be done.

What controller models are you trying to use? Are they controlling the dimmers through the ISY994i? If they are through the ISY994i. You should be able to see the changes in the Administrative Console. When you try the Query you can get further clues with the Event Viewer in Level 3. Only the 2477D is dual band. The others are power line only. Something else may have been effected with the power switch. Try a factory reset on one of the switches and then a restore.

I have a few spare PLM modules. As I like to look for obvious changes in the PLM. Along with a spare ISY994i.

Try a power supply. When they fail all kinds of strange things happen. I have had at least one on an ISY26, ISY99i and now a ISY994i. Since you tried more than one PLM. Try a new cable between the PLM and your ISY994i. They have on occasion gotten flaky.

Depending on if the metal frame of the switch is mounted on a surface that will help remove the generated heat. Incandescent loads also may have a current surge when starting with a cold filament. To consider. Relay type as pointed out would be better if you don't need dimming.

Insteon dual band devices also have a built in communications test you can use. Some manuals call it the 4 tap test, some the beacon test and some have a flow chart to follow to enable the test. The dual band modules and their range extenders [dual band 2477D2 Lamplinc with the dimmer parts left out]. Do not couple or pass on X10 messages. Many of the passive X10 couplers will also couple Insteon power line messages. Some of the active X10 coupler repeaters can see the end of an Insteon power line massage as a bogus X10 message and try and repeat the command. I have a XTB-IIR that knows enough to not false on Insteon. So in my case I have a mixture of X10 and Insteon devices.

Guy is correct. The tact switches on the PCB get intermittent and may even click but not actually make contact. When the paddle mechanically activate the tact switch. There was a repair instructions on how some one did the repair. There was a early production run of the 2476 Switchlinc that we actually gave us an extended warranty [back when Smarthome sold an add on 7 year warranty ] if the switches went bad. I had a few myself.

They control the load output from the module. The pair can be controlled for the load connected to it and it can be used to control other devices.

Did you have a chance to look at the revision of the 2443 Access Points? Any revision of 2.0 and above are base 2413 PLM electronics and can have the same capacitor issues. One of mine the LED on the side was off and the second one was very dim. In my case the same capacitor fix for the 2413S PLM worked. You can try power cycling them and see what happens. You can also do the 4 tap communications test on them. 4tp test also will run on the 2413S.

You may also want to run the built in tests between the two 2443 access points to see if they are still communicating. If they are any revision 2 units. They are built on the base 2413 PLM and have the same capacitor issues as the 2413S PLM. I had to rebuild mine with capacitor issues.

The internal and external photos. Look like the AC input could be changed to match the countries standards. Of course this was back in the days when they actually had modules in other countries but the PLM was 120VAC 60Cy only.

This is from the FCC Database files for the 2234-232 updated PLM replacement. Sounds like the present owners maybe thinking about producing it. Expanded operation to 100-240VAC and 50/60Hz. Increased Insteon links storage from ~1000 to ~4,000 links with faster read/writes Uses the same communication protocol and structure to match earlier models Updated all processors with increased memory space and speed Beefed up electronics to reduce failures due to AC-mains electrical spikes, noise and heat from poorly ventilated install locations New and smaller enclosure that matches other Insteon plug-in products Increased power line transmitting signaling levels and robustness New RF circuit with higher sensitivity components and calibrated antenna circuit Supplies 5VDC capable of powering single-board computers like ISY TM controllers Added fast TVS surge suppression on the Serial port to prevent static damage For the Polisy and eisy users. There was a 2234-222 USB model.

The DST issues where also reported on the Insteon Forums. So the ISY products where not the only controller with possible issues.

My older ISY994i changed as expected today.

Also they are RF devices and go in to power saving mode. Each one has to be woken up individually and then do a restore on it.

Module has to be restored as there are writes pending to the module. If battery operated module has to woken up first. Also effected by turning on and off automatic writes or battery devices.

If some of your modules are the older power line only models. They can be effected by power line devices as the new devices in the house are added. So in theory older modules may not fair better. Even with the great UDI products.

You may have to have the special UDI USB adapter on the Polisy end. As I am not too sure if it can do serial. I know the eisy can not do serial. There are other signals on the RJ45 style connector that you do not want to connect to anything. Like TTL signals.