Continuity
Select the continuity position on the multimeter (use the diode symbol for testing LEDs).
Power is OFF when using continuity and testing diodes.
![](http://tech.gpvanier.ca/wp-content/uploads/2019/10/digital-multimeters-basic-guide-3-728-e1571943775822-300x208.jpg)
1. Check for continuity between the 220R resistor and LED. (beep)
![](http://tech.gpvanier.ca/wp-content/uploads/2019/10/Continuity1_bb-e1571944386719-1024x352.jpg)
2. Check GND (ground) connection between LED and 10uF capacitor. (beep)
![](http://tech.gpvanier.ca/wp-content/uploads/2019/10/Continuity2_bb-e1571944403704-1024x402.jpg)
3. Check that positive leads on LED and 10uF capacitor do not have continuity. (no beep)
![](http://tech.gpvanier.ca/wp-content/uploads/2019/10/Continuity3_bb-1024x402.jpg)
4. Use diode mode to verify that the LED is functional. (LED should light up very dim)
![](http://tech.gpvanier.ca/wp-content/uploads/2019/10/Continuity4_bb-e1571944422446-1024x375.jpg)