Disconnect one end of the resistor from the circuit. It does not matter which end of the resistor is disconnected. Disconnect the resistor by pulling on the resistor. If the resistor is soldered in place, melt the solder with an electronic grade soldering iron and pull the resistor free using small needle nose pliers. Soldering irons are available at electronic parts and hobby stores.
Note the resistor tolerance. No resistor is precisely the value indicated on it. The tolerance indicates how much the printed value may vary and still be considered a properly sized resistor. For example, a 1,000 ohm resistor with a 10 percent tolerance indication is still considered to be accurate if it measures no less that 900 ohms and no more than 1,100 ohms.
Ensure that the DMM comes on and does not indicate a low battery condition. Set the adjustable scale of the DMM to the next setting higher than the expected resistor value. For example, if the DMM may be set to scales that are multiples of 10 and a resistor marked as 840 ohms is to be measured, set the DMM to the 1,000 ohm scale.
