Sea and Sea YS D3 power control nob failure

I have had two Sea and Sea YS D3 strobes fail recently. The power controller nob no longer clicks and changes the power output in the strobes. Once the power controller fails I no longer have the ability to change the power output. Sea and Sea replaced the first strobe which has now failed as well. I have had two failures out of 3. Has anyone else experienced this issue?

My suggestion is for you to write the Sea&Sea president and ask him for two new replacements, or to ask the seller to replace them with  Inon Z300 strobes.

Locally, in California, I would take the seller to Small Claims court to get my money back, no lawyers are allowed in SC court, and you have an open and shut case for defective product reimbusement.