From my understanding the power supplies are probably the cause of 95% of the failures. I've seen a couple taken apart and they are pretty cheap. That's why RLSS is now sourcing Meanwell power supplies for their version of this pump. I may use a Speedwave on my 120 build but if so I will swap out the power supply for a locally sourced and better quality one.
All this being said, there have been countless thousands of these pumps sold under the three different brands (actually 4 if you count Jebao themselves) and while the failure rate is higher than say for Tunze or eheim or other more established brands, most of the pumps sold are running happily and without problems.
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