nanoDLP

Hi.

I have had my wanhao d7 for a few months now and have been printing without many issues, but in the last month ive had my UV LED light flickering which caused poorly cured prints, i just increased the cure time per layer and it seemed to work anyway, but now i cant get the UV LED to turn on at all, do i need to just replace it or is there anything else i can try before i order a new UV LED light?