How to test AC Volts with multitester - Measuring Tools & Sensors

you need to get a voltage tester or multitester to check the supply voltage to the rear window motor which sould be about 12 volts.To get access to the motor you need to open the facia cover of the rear door.Locate the cable going to the motor, then if you can see the connection to the motor put one end of the multitester pronge (red tip one) to the motor cable connection. Put the other multitester pronge (black tip) end to the metal part of the door. The black tester prong tip should touch a bare metal part of the door ,not a painted surface cause electricity cannot flow on painted surface, usually on a hole with screw on the hole.On the motor side you should touch the bare metal part of the motor cable connection with the red tip pronge of the tester. If the multitester registers 12 volts then you got power supply. check cable connection to the motor , and the connection of the motor body to the rear door to see if its tight enough. If it does not work then its the motor that needs to be check or replaced.

Multimeter

A faulty power supply can cause a computer to function irregularly, or in some cases, not at all. Some of the potential problems that can result from a faulty power supply include the computer not powering up, the PC freezing during boot up or the PC randomly shutting itself off. Each of these cases can be a true headache for the user so having the ability to test the power supply could not only save you from experiencing too much computer downtime it could also save you the cost of purchasing an entirely new machine. Here is how to do it with a multitester.

Check the quality of the receptacle and/or power strip your computer is plugged into (this is the first test you should always perform). Set the multimeter to read voltage and test the receptacle or power strip to ensure that the voltage is reading properly. Your tester should read approximately 120 volts. If the receptacle is good, the next thing you will have to do is turn off your PC and open your computer's case. Depending on the make and model, that can be a chore in and of itself, but you can always check your documentation that came with the machine for guidance. Leave the PC plugged into the wall outlet, but keep the machine off. With the case open, locate your power supply. It is a large, silver metal box with many colored wires coming out of it. Before you put your hands into the CPU box, be sure to ground yourself by touching something metallic or by grounding yourself to the box itself using a grounding wristband that you can purchase from your local office supply or computer store. Locate a power connector that isn't being utilized. If they are all in use, just unplug the one that is plugged into the back of the hard drive or one of the CD drives. Set your multitester to read DC voltage in a range greater than 12 volts. Turn your computer on. On the power connector, look for the black and the yellow wire. Touch your tester's black probe to where the BLACK wire is connected to on the connector and the red probe to where the YELLOW wire is connected. Your multitester should read +12 volts. Keep your black probe in its current position and touch the red probe to where the RED wire is located on the connector. Your digital multimeter should now read +5 volts. If you get a different reading or no reading, then the power supply is bad and should be replaced. If you get the proper reading on your multitester, then your motherboard may be the cause of your PC's problems. THE BEST Multimeter tutorial (HD)
http://www.youtube.com/watch?v=bF3OyQ3HwfU

The dc setting is for checking like the battery voltage in your car the ac is for checking the power inside your house to see if you have 110 at the outlet.
DC setting can be used for testing flashlight batteries pen light batteries etc.

Hi!
This error will only dis appear when you replace the ac power adapter that comes with it.
Or you better check if the output voltage and the amperes are not dropping.
Your power adapter should out with 12 volts and 2.5 amps. Less of this value means its dropping and its not stable..

You can use a multitester to check if the output voltage and amperes did not meet the requirements.

Hope it helps!
Alpug

Turn selector switch to volts D.C. and set range to next highest setting for the batteries you are wantimg to test. For example 25 volts if you are testing a 12 volt battery. Touch positive ,normally red probe on positive side of battery + sign,and negitive on - side, black probe. Hope this helps. Thanks

If it rattles when you shake it it's bad.

There are two types of relays you may encounter, wire coil and solid state. If the relay has an exposed wound wire coil it can be tested for continuity. Otherwise, the relay is of solid state design and requires specialized equipment for testing.Test the compressor relay for continuity using a multitester. Set the multitester to the ohms setting X1.
With the relay upside down, place the probes into the terminals labeled "S" and "M". The multitester should display a reading of zero ohms, indicating continuity (or if using a continuity tester, it should light up).
With the probes still in place, turn the relay over. You should hear the click of the magnetic switch engaging. The multitester should now display an ohm reading of infinity (or the tester should not light up).
Turn the relay upside down again, place the probe on the "S" terminal and place it on the side terminal labeled "L".

The multitester should now display a reading of zero ohms (continuity). Turn the relay over and the reading should change to infinity.
With the relay upside down place one probe on the "L" terminal and the other probe on terminal labeled "M".
The multitester should display a reading of zero ohms. Turn the relay over and the reading will stay the same, zero ohms.
If the compressor relay does not pass all of these tests, it should be replaced.

Hello,

This is either a bad AC adapter or a broken power jack in the laptop. First to test would be the adapter. You will need a multitester set on DC voltage, the adapter should be putting out about 22 volts. Put the red test lead into the center of the plug and hold the black lead to the outside of the plug. If you don't show a voltage then the power adapter is broken and you will need to get a replacement. If you do get a reading then the power jack in the laptop is broken and the unit will need to be taken to a computer shop that can open the unit and solder the connections.

I hope this helps, If so please rate our solution.

Buddy
Corporate Computer
www.ccl-la.com
[email protected]

Try to detached your sata cable and try to check the connector using multitester if the output is 12 volts . if you dont have multitester, replace your sata cable.




Raul D. Sinangote

sounds like the stator under the flywheel is bad that is what charges the battery

ck for blown fuse, ck for broken wire.