Brian H

One other possibility is the Starlink Power supply is making power line noise or is a signal sucker. Especially if the Insteon modules are the older power line only model. Is the Starlink supply connected on the same power feed as the ISY994i and PLM? A PLM link count may also show something. Though it can be wrong if their is any Insteon messages during the count.

Sounds like a big improvement. Both switches have to be an Insteon or Icon for both to work correctly. I used an Insteon switch module and a mechanical switch. In my case I wired both travelers to the Red output. So either mechanical setting still worked with the Insteon module and the switch did nothing. Glad it works OK for you.

If it is a 2477S Dual Band Module. Page 12 gives the Factory Reset sequence. Remebber if it is in a 3 way setup. All the setting are gone and it will function like a new switch with no links. http://cache.insteon.com/documentation/2477S-en.pdf

Yes

Depending on its age and model number. There was a period of time where the 2476S Relay style and 2476S dimmer style SwitchLinc. Had a bad run of tact switches. The paddle would activate the switch and it would click but not make internal contact. Some only the Off or On switch and sometimes both. Remote controlling was perfectly fine. Smarthome actually gave us a 7 year warranty on that series of models. Your description sounds like it maybe a tact switch. Sometimes fine, some times bad and some times wiggle the paddle it would work. I did see a how to on replacing them and I believe someone here has done it.

I still use the query all. As I have a intermittent 2456S3 Appliancelinc. That occasionally gets locked up. I believe by power line noise.

The PLM has a Link Database Memory in it. If it gets corrupt it can cause communications issues. Power cycling and resets can sometimes get a weak power supply going for a short while. A weak power supply may also effect the power line signal. I honestly can't see a rebuild changing the processor or RF control chip as both are programmed with firmware only Smarthome has access to. Unless salvaged from another PLM or they mistakenly didn't set the protection bit. So you could read the firmware back into a file. The PLM does have two 5 position programming connections. Main and Rf for the chips. The memory chip and RS232 chip probably could be exchanged. Long thread here on how we changed our caps and symptoms. https://forum.universal-devices.com/topic/13866-repair-of-2413s-plm-when-the-power-supply-fails/

The 2412U has the same ~2000 link database in it as the 2412S. It is probably like the 2412S and the ISY994i. The ram is slower and many had problems around 800 Links. If the PLM database was fresh abd all the devices had to be added. Every link is every device has to be updated with the new PLMs address. Along with the modules added to the new PLM. The 2413PLM is serial as pointed out. Just used a RJ45 network style cable. Some here have made a cable to go from the 2413S PLM to a DB9 serial type connection, if needed.

If the power bar had a surge and noise suppressor in it. The bar can also absorb power line signals as noise. I had one with a capacitor across the line and it killed the signals. Watch your power needs. The X10 XPPF is only a 5 amp filter or the XPF 20 amp one is quite large. The Smarthome FilterLinc was 10 amps but hard to find these days.

I took another look and the Licon brand was in my 4.? versions. If it is a 4.? with the cap parallel to the board. You should sill be able to use the original sized 470mfd/35V. I had one of the 30 volt Zener diodes short. Under the cap. I got lucky and replaced it and the cap for good measure. Since it is around a 30 volt supply. The 35 volt cap should be fine. Depending on size a 50 volt would also work with a larger voltage tolerance but probably a larger size. Longer or fatter depending on what you try to use.

I had a few go bad myself. One was On and started to pulse on and off at about a two second cycle. Mine was a green cased NOVER brand cap. It is not a high frequency supply. It is a half wave circuit. 30 cycles on the cap. Not like what was in the PLM and another few Insteon modules. I just got a good quality Panasonic 470mfd/35V designed for power supply use. Panasonic EEU-FC1V471 but any good brand should be OK. They where taller but still have room to close the top cover. This is the Icon version of the V1.4. The V4.? used the same capacitor just a 100% different design. I have used that capacitor in a V4 and my V1 modules. In the V4 it is sideways parallel to the board and has some component glue holding it. https://efundies.com/guides/insteon/hardware/paritial_schematic_of_insteon_icon_on-off_module/icon_on_off_schematic.png

You may have a power line issue. Any new devices like a cell phone charger or any other electronic devices? Some are known signal suckers or power line noise makers? Unplugging a device and seeing if things chance is one test. A deteriorating presently installed device could also be a factor.

Are you using the ISY Launcher program? It picks the correct information to access the ISY994i and no longer need a different start program with the proper data for each version.

You may want to plug the module into the same outlet as the PLM. It could be possible you have a new signal sucker or power line noise maker. That is effecting the X10 signal to the chime module. The power line receiver in the chime module may have gone bad and it would still ding-dong on powering up, Try rotating the House and Unit Code wheels to clean them. We have seen some modules with age. Get intermittent and actually be on a different address than the wheels say they are set to.

As pointed out. We have seen brand new modules with test links not removed before being sold. Both the ISY controller and PLM have a maximum link database size. PRO adds a larger link size to the ISY controller and the 2413S PLM is ~1000 links.

Yes since the ZWave Security was added for the 500 series boards and is not for the 300 series ZWave boards. I take it you saw the 300 series 5.0.16C thread where it can be found. https://forum.universal-devices.com/topic/27669-5016c-isy994-last-version-to-support-z-wave-300-series/

Little more information. In the Scene I have it set to Siren Trigger Home, Duration 6 seconds, Delay Immediate and Chime Mode.

I am using that module in a scene and you may find three places to set parameters. The listing in the Administrative Console did not set what I wanted. In its listing in the scene list where I added it. It also did not seem to set what I wanted. When I highlighted the scene name it self in the Administrative Console. I was able to get it working the way I wanted it to work. One thing that may not be too well known. That module and the earlier Alert Module where the ones Smartlabs did not provide proper or any data on how it was to be handled. So it was reverse engineered by the folks at UDI and possibly may not function exactly as the manual says it should work.

Can't say about the 2477S but I know my 2635-222R On/Off Module was a refurbished 2635-222 and had a 30 day DOA exchange warranty from the now gone Smarthome.

From what I have seen. In my ISY994i. Restore Modem (PLM) does a software reset command of the attached PLM. Then writes the links into it and changes the old PLM 6 digit ID to the new 6 digit ID in all the modules.

The EMI SH21115AS is a 2 pole relay and the EZ SH1115A is a one pole relay. Though both pins for each function are tied together inside the original relay. The rating maybe the same as both. As the pin for each function are tied together on the board. So with the EZ SH21115AS both internal relays contact sets are in parallel.

Thank you for the link. I will give it a look.

I found some information on the relay you mentioned. It was a Goodsky product and as you mentioned 1/2 the power rating as the EZ. I have not seen a specification sheet on it yet but will keep looking.

The relay is a Goodsky EZ-SH-1115A. I have seen a few Ebay listing selling the relay but didn't check the status too closely. Some where used removed and tested. https://www.goodsky.com.tw/en/relays/general-purpose-relay/67-ez-relay

Yes that is the 120VAC coil relay used in the V1 2456S3 units. Near the Red output wire on the board. You will see the two open capacitor mounting pads. In Version 1.3 they where removed because they sometimes shorted and kept the load on. I have had a few of the larger 470uF/35V caps fail. In mine it pulsed on and off at about a one second cycle. Replacement fixed the cycling. If it is clicking I would think stillwater's though on a stuck contact maybe what is happening. Here is some information on the module. It is an Icon but the differences are no pass through outlet on the front and a green or amber LED. https://efundies.com/guides/. The what is inside an Icon module pages show the information. The partial schematic of an Icon Module shows the small P160J coupler and how it turns the 120VAC relay on and off. Yes the +5 volt logic voltage is connected directly to the 120VAC Line input. All the voltages are set with electronics referencing to the Neutral.