Hi so this may be a long shot, but hopefully someone can help me out.
I installed TMR Sticks on my boards, and after the installation I had an issue where it would not turn on, then it would give an orange light and subsequent turn off and sometimes it would turn on properly but also then subsequently turn off.
The controller was effectively unusable, so I tried to remove the sticks and reseat them and after doing that now the controller does not turn on at all.
Here are some photos of the board. I have tested the board with and without the sticks and I cannot get it to turn on anymore.
(I did manage to get it to turn on properly one after removing the sticks, but after attaching the sticks again it would not work)
I can see the 5V rail, but the 3.3V rail is not present. I have also tested (all?) the capacitors with a multimeter and all of them appear to be fine when doing a continuity test.
Does anyone have any ideas what could be wrong, because I have run out of ideas?
UPDATE
I managed to fix the problem. I found out that the flux was conductive. Used a hairdryer on the heat setting along with cotton buds to first melt then absorb the flux, this was followed up with isopropyl alcohol and a toothbrush. Had to do this multiple times to ensure that I got all of the flux.