I just moved a project of mine from a breadboard to a PC board. It was my first time doing that and so I'm not 100% sure that it's right but I think it is. What the problem is that when I turn the circuit on only about 60 mV go through. I checked the batteries and they're putting out around 5.2 V but as soon as power reaches the board it drops to nothing. Does anyone know what is wrong/how to fix this?

 

Check your wires and solder joints where the batteries are connected to the board.

Use a magnifier and make certain that you don't have any "solder whiskers" shorting out traces.

 

Thanks. I got it worked out

 

To help others that may have a similar problem can you tell us what the problem was?