You have been around this issue for quite some time. Nevermind your history with the pumps. Is it fair to say that the Jebao controllers and power supplies are "unlikely to fail because they are solid state?" Twillard is acting as though there is not a record of these parts failing on Jebao pumps. I guess becasue they are solid state, the claims of them failing are not valid.
I know your head has not been stuck in the sand when it comes to the history of Jebao reliability issues as well as threads on other reefing forums regarding this and other Jebao made (Waveline - first and second gen, Reef Octopus - first gen, Speedwave, ect...)pumps.
Gcarroll, I know you are not a Jebao fan and I have nothing against the points you make for not using them. They are valid points. But as with all equipment we stick in our tanks, there will inevitably be a point of failure. whether it is the new Vortec pumps, MP's (I see lots of failures posted on the wet and dry sides) Jebaos, Aquailluminations, Reef Breeders, Tunze or any of the other multitude of brands.
the Power supplies sent to me from Fish street were laptop style power supplies that came with multiple tips and were adjustable voltage. This was for some of the Very first edition of the Wp40. these bricks are still in good shape and provide power. what failed on one of the WP40 I had was the pump itself. it just quit turning the impeller. Not sure why and I havent cracked it open.
The Power supply on the DC6000 is pretty much just that as well. a 110 volt Ac to 24 volt DC converter. yea, probably a cheap one, but these are very run of the mill anyways. it seems to be working as it was designed. as for the Internals on the DC pumps, I am not an electrical engineer and thus dont have any technical knowledge except to know that they are basically electo magnets that change polarity and cause the impeller ( that is seperated from them by a plastic housing) to spin. I am sure there is more to them than that. as for the controllers, I dont use the Jebao controllers wit my old WP40 and now my new WP25 because I have them hooked to my Archon via APC module. I do use the DC6000 controller and use the feed mode when I do maintenance.
For me, the piece of equipment I most worry and actually see fail are heaters. Oh yea, I had a Koralia fail in my fuge and about kill my tank as it started to leak voltage.
Man, I remember the days when Jebao was Jebo. they made some really crappy things. I had a 48" power compact Jebo light back in the day. What a piece of junk.