Hi
@HuneyBear, yes, you are correct about PLC (programmable logic controller). I've worked with them for decades. (40 years aerospace R&D lab., talk about redundancy!) I was just trying to describe them for others who may not have worked with them before. When designed properly they can actually take up less space.
I guess now I'm starting my own pile of dead controller parts. Grand total to date,....one. But it's a start. ;Playful I also have many other pieces of dead equipment (i.e. pumps, lights, heaters, etc.) over the years as no mechanical or electrical device lives forever.
To wit the desire for a more modular system. I believe that the vast majority of people would be capable of pulling the plug from a single dead power module that needs replacing and temporarily plug it into a wall socket (via extension cord if need be) until their favorite supplier/deliverer (i.e. Amazon Prime) shipped a new module out. The rest of the system just keeps chugging along. No real need to keep a spare of every item on hand. Factories have been operating this way for years.

Hi
@Dub, while I agree with your basic premise, I don't think that this is an excuse to accept shoddy equipment. Actually I think it is the exact opposite. It is through these exchanges that the manufacturers can get some real world feedback on their products. The rest of my system has been operating flawlessly for years, so I do think that Apex is a pretty good system. But no one can deny, with all the real world feedback, that the EB832s have some "room for improvement". I'm willing to bet that someone at Neptune is reading all these post and hopefully will be taking it into some consideration. Fingers crossed! With the competition ramping up, it would be in their best interest.
(Just saw that a couple more post were made while I was typing. All comments welcome. The more the better for the manufacturers to get a good perspective on the matter.)
P.S. Hope I didn't come across as too harsh on anyone, not at all my intention, but sometimes hard in written word.