After replacing the caps on some of my LampLinc's they remain dead or only marginally communicate.  The 30 Volt rail is good as is the 5 V rail.  Any suggestions?

Which model Lamplinc?

Both the original 2456D and dual band 2457D2 where labeled Lamplinc. The 2457D2 later manuals did change the name but the early manuals did call them a Lamplinc.

Edited December 24, 20222 yr by Brian H
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On 12/23/2022 at 2:09 PM, Bob Chase said:

After replacing the caps on some of my LampLinc's they remain dead or only marginally communicate.  The 30 Volt rail is good as is the 5 V rail.  Any suggestions?

I expect that that the presence of a 30V rail indicates the a single-band LampLinc 2456D-series.  The other information " my LampLinc's they remain dead or only marginally communicate" are insufficient to offer any recommendations.

-Pinch

That sounds correct.

Also if it is in a case. Is looks like a PLM. That was the case used for the 2456D.

You may want to look at. Since it is power line only. Some changes in the house maybe effecting the communications. Like any new electronic device or existing ones moved. I would suspect the power line interface circuits if both send and receive are a problem.

I will see if I have any 2456D modules to look at. I do use the 2456S ApplianceLinc modules.

Gentlemen,  thank you for your replies.  When my mouser order gets here I'll do more troubleshooting.  Perhaps I'll swap out some parts with a working ApplianceLinc and see if the problem moves.  Like if one of the poly caps are bad.