I need help,  it’s been about a week and I still can’t get my 555 to work,  I am unable to get the simple LED blinker to work.  Does anyone know of any means to troubleshoot the board.  I am looking for values at certain points on the board that I can test with my multimeeter. I did  have some trouble with a few leads not letting the solder adhere. So I have no way of knowing if I am doing something wrong in setting up the LED blinker, or did I do something wrong building the kit.  Thank you in advance