I have rewired my hilt side PCB to use 20AWG on all but data line (22AWG for that one) and also wired 20AWG from battery (18650 3.7v 3120mAH 15A). I was getting weak light prior to the upgrade now I get no light. Testing on a remainder LED strip piece (previously used for testing) gives the same result.
I am measuring just over 4v (same as battery) between the positive and negative pins on the PCB but also see 4V between data line pin and board ground as well as data line pin and PCB negative (I do not recall voltage on the data line prior to this)
I confirmed not continuity between +/- PCB wires and the data line so not sure why voltage is there now.
I see around 3v at channel 2 pad but no volts on channel 1, 3, ad 4. I am not sure what these do but thought I had voltage on all of those prior to rewire.
When holding the PCB pins to the blade side PCB (to test the lighting) I saw smoke from the solder point at L2 (between channel 2 and 3) then that soldered connection came off completely. I have reattached the L2 connection but still no lights.
I ran all the typical voltage checks as provided in the manual and they all came back in expected range.
What is the next trouble shooting step?
How do I confirm the board is not fried?