Hello, Im new to EE.
Recently, I designed a LED driver and dimmer circuit and ordered the PCB. Im using a TLC555 for PWM and a LM3405 as the driver. I have soldered on everything and double checked continuity and everything seems to be fine. But when I run 5V through with a powerbank and put a multimeter in current mode on the other end where the LED is supposed to be, I don't get any readings. I haven't received the LED yet which is why I used a multimeter to complete the circuit. I think there are 2 possible sources of error: Either I fried a component while soldering, which is unlikely because I made 2 boards. The other reason is that there is something fundamentally wrong with my circuit design.

 

MODS - please delete this I have solved my problem

 

MODS - please delete this I have solved my problem

For the help of anyone who might want to learn from your question, please take the time to explain what the error was and how it was corrected.

 

What had happened is that my multimeter cannot read the PWM'ed current so it registered as 0. I tried it with a simple DC motor and all was well! Moral of the story: get some rest you can think clearer!