Last year, my Insteon 2413S PLM failed, and I succussfully fixed it by following this post.
Yesterday, I noticed that my EZIO40 (Smartenit Insteon relay device) had no LED or power. When I opened it up, I found that it contained a 2413x board, similar to the one inside the 2413S PLM.
I applied this same capacitor fix to the EZIO40 and it is now operational !!!
Thanks again for the great information.