We have 92 PCBs that have been made for us and they used green solder mask. We need black.
The board is 233 x 353 mm. Each board has 216 SMD LEDs.
Unfortunately, we had a miscommunication with our supplier in there somewhere and we have no documentation to back up our verbal instructions. We have properly chastised ourselves for this oversight by probably eating the cost.
Any ideas?
TIA, JohnS