Appliance Repair Prospect Heights
Remove the DC motor from the mount. Make sure you remove any electric power source that could cause it to start turning accidentally. It may be necessary to follow the instructions of the manufacturer to remove the motor, as some are firmly wedged in place and could cause electrocution.
You can then test the continuity of the motor by connecting it to a Volt Ohmmeter. Ensure that the meter is in the "ohms" position, then place the red and black leads into its connections (the red lead should be attached to the "ohms" and the black lead to the "common" point). Test that the meter is working properly by touching these two leads together - the screen should read zero ohms (or full continuity).
To test your DC motor, touch the leads of the ohmmeter to the leads of the motor. The meter's screen should indicate a low resistance (somewhere between 10 and 30 ohms), but if it reads an infinite ohms or an open circuit you should rotate the end shaft of the motor. The ohmmeter should give different readings as this shaft is rotated (which is an indication that the electric motor itself is good, but that there is a problem with the electrical circuit. If the meter still reads as an open-circuit, the conducting brushes could have gone "bad".
Remove the brushes at the end of the electric drive motor using a screwdriver (they are under the plastic end cap on the opposite end to the drive shaft). Check the brushes for cracks and breaks on the surface. The area of the brush which sits against the conductor should be smooth and curvy. If there are any broken wires or springs, the motor will fail. If the brushes are fine, the problem could be the commutator.
Remove the screws running the length of the motor with the screwdriver. The plates that make up the commutator should have an opening between them. If you notice any broken wires or burnt varnish, the commutator has failed and its damaged parts will need to be replaced.
Overloading plug-ins causes fire hazards in your house. It gets overloaded by too many thing plugged in at once. It can cause the cords to burn up and fire and smoke to come from the plug-in itself. If you have too many things hooked up to a fuse, it can cause it to turn off the power to parts of the house, and this means you need to get the fuse box checked out. When you have them check out the fuse box, get it fixed so the wires are not messed up and won't cause a fire. Sparks can be shocking. If it is shooting sparks, turn off the power to unplug it so you will not get hurt and so it will not cause a fire.
It can cause the plug-in to melt if it gets too hot, and it will leave black marks on the face of the plug-in. If this happens, you should not use the plug-in until the wires have been checked to see if they are working correctly and if they are safe to use. It can also fry the sockets in the computer, TV's, and the other electronics that have overloaded it. Overloading plug-ins can cause it to overheat. Unplug the plug before it gets too hot. Do not plug in too many lights simultaneously, as this will overload the circuit and blow it.
The same thing applies for extension cords. Never put an overloaded extension cord on an old carpet or rug as this can also start some fires. Pull the plug out of the wall if you smell smoke. It is likely overheating. If an appliance shorts out while plugged in, the electricity can travel up the cables and into the socket. This will leave burn marks on both the socket and wall. You will need to have the wires in your walls checked and repaired if this happens. They can cause a fire at anytime if they are not replaced.
The fire damage that could be caused from it will have to be removed and cleaned. It is dangerous to remove the wires yourself. Before working on the wires, all power must be turned Good Old Appliance Service off. Professionals must make sure that the power is working properly when they turn it on. If it's not hooked up correctly, sparks can shoot out and shock you or start a blaze. If it starts a flame, it can spread throughout the house through the wires and fry everything.
