I commented below - earlier. There is NO FIX to this trouble. I spoke with senior tech people at HP and they confirm this printer - and many others - are disposable. I complained that a $150-200 purchase was negated by poor quality plastic roller the size of a grape. Furthermore, I would have to buy new machine. Even worse, inventory of ink I just bought was now useless. They agreed and hence the deal on a new generation machine which will likely have similar problems soon enough.
The issue become one of total cost per printed impression over "life time" of machine, not user. There does not seem to be consumer panels/survey on longevity but there certainly is evidence that low-price ink jet printers (or lasers) are "given" away (low/no gross margin) to drive ink sales. The proliferation of models by HP which basically are unchanged in function is part of that marketing plan. It's deliberate and the choice is for the consumer. Can we shame them into growing up and making sense? I doubt it.
I am pledged that next time - too soon, I am sure - I'll will not buy HP and I will buy printer with parts designed to last and made available for vendor or at home repair. Long term, HP is not the tech firm it used to be and buyers need to move on.