I recently purchased a COB from eBay that arrived DOA and want to know how to rebuild. It didn’t come with a bulky driver (doesn’t not have any cooling fans) and from the options listed for a new Topic I can not figure which heading to put the query to. I assume it is new technology since a google search shows that a driver is required and this light has nothing like what is posted. Anyways I am looking to make it no more than 600W startup/ 250W continuous and of course I will need it to be for flowering and with the most amount of Lumens output, within my budget. I don’t mind purchasing a driver but if there are COB’s that don’t require the bulky drivers I have seen posted on DIY builds then I would want to know of them.
…and what is Grobo?