Yes I would imagine that they are standard off the shelf surface mount LED’s. They are mounted to their own PCB’s. There are no resistors on these PCB strips, so all the control comes from the proprietary driver/mother board. The LED’s in question do not appear burnt out, which is leading me to believe it’s something wrong with the mother board. Before the Form Cure, like you, I did design and make my own solution. The biggest issue I faced was heat deteriorating the LED’s, I was about to embark on another iteration and they brought out the Form Cure, so I did not bother, as my time to spend on developing such things is limited, even though being a Design Engineer myself.
I did bring up consumer law with them, but as I understand it; I would have to prove that the parts/product were inherantly defective from the first 6 months of ownership. Unfortunately the “right to repair” laws are only for select domestic appliances and companies have two years to implement changes. So the only solution from Formlabs was to buy the same again.
I would have expected them to at least supply parts and help diagnose the main cause of the issue. My experience with Formlabs products in general is they perform really well, but are really unreliable, even when maintained properly. They have tendency to sell high cost warranty and PSP plans with there products so they do not have to build reliable products and just pass these costs onto the customer.