I appreciate the reply but these videos don't seem to address the problem with my LED drivers. I did some more investigating on the driver board and have found there are 10 3VDC LEDs wired in parallel and then 24 of these 10 LED circuits are series together and the driver is supplying ~74VDC to the LEDs using a controller and N channel mosfet. The driver I have is running the mains AC through a bridge rectifier to provide 120VDC direct to the LED string positive, the LED negative is then routed to the drain on the mosfet and the controller is then pulsing the gate to convert from 120VDC to 74VDC in a DC to DC converter setup. The problem I'm running into now is that the little 6 pin chip doing the magic for the mosfet is not labeled with a part number and the flicker I'm seeing is coming from the controller failing to maintain stable voltage out of the mosfet when a load is placed on the same circuit that the lights are on.
I'm not opposed to replacing the driver and mounting it to the top of the light as they are hanging from a drop ceiling. If I were able to calculate the power requirements on the LED strings with bench supply and replace the constant voltage driver with a constant current driver would that prevent rapid changes in load on the AC circuit from causing flickering in the output?
First of all, welcome to the forum, I see you only have 2 posts. There are some very knowledgeable people on this forum.
I am a little confused regarding your comment "the flicker I'm seeing is coming from the controller failing to maintain stable voltage out of the mosfet when a load is placed on the same circuit that the lights are on.". Do you mean the same AC circuit? This unit should not in any way load the AC line coming in and vice-versus, another load on the AC line should not affect this circuit at all. If this is what you are talking about, you may have other problems on that AC line.
A step back may be in order. If you have an o'scope, maybe a before and after shot of the waveform that you see from the output of this lighting circuit before and after the change condition is encountered. Also, if you could clarify your statement, it would be helpful. My first thought after you described this problem in the quote above was that it sounds exactly like what the videos are discussing, a lot of ripple on the output. A current measurement would also help as well as a reverse traced circuit diagram (see BigClivedotcom YT channel), this should be easy enough with that circuit/PCB, and some close shots of the entire board, front and back.
You may just have a poorly designed power supply, however, a constant current power supply may be better for LED light regulation. This type of problem is very difficult to examine over a forum, especially without the waveforms, measurements, etc. to see what actually is going on. I gave you the links to the videos for seeing the process that Dave used for determining his problem on his power supply, thought it may help.
Hope this helps...