Dear customer,
I am an electronics engineer and I am capable to analyse and develop improvements for LED lighting systems. I will need more details regarding to the kind of malfunctioning you are experincing so i can trace a corrective design or method to solve your product's problem.
At this moment, I don't have enough information to calculate an appropiate budget for this work, but I am confident that if the problem is an electronic design problem, the amount I specified will be enough.