I'm trying to get rid of the flux on my board but it seems I have a problem. this is my board:
After soldering two memory under the board(as you can see two memory(a RAM and a Flash)), there is a bit flux among the pins and unfortunately under the plastic of the pin-headers. I have used a spray to wash it out but it doesn't good work for me.
How to clean it(flux) out? I mean the flux under the plastic of the pin-headers. I also have seen this clip:
and I used a combo 50-50% alcohol and acetone but still...
I tried to earse the MCU but it's impossible. it seems there are conduction among the pins.