How would I go about removing this pcb to reball it? I have a quick 861dw hot air station but I spent 5 minutes heating it and it didn't really do anything and I stopped because everything around it was getting giga hot and it was discolouring.
I was doing 330c 90% air

Do I need a board heater below it? I can't heat from the back because there is a billion things on the other side but I can remove the pcb and put it on a hot plate or get a board heater at a lower temp
I was also using liquid no clean flux and it kept fucking off which may have been the problem idk.