I want to test a laptop power cord using my multimeter. Can anyone recommend which voltage level I should set my meter to and and what it should read. Also, How would I use the positive and negative leads to get a proper measurement?
2006-12-23 14:19:26 · 5 answers · asked by ericcoz 1 in Computers & Internet ➔ Hardware ➔ Laptops & Notebooks
Note: the power cord/transformer should be fine...why test? If you are plugging it in and not getting any juice to the laptop, first check all connections, and then consider checking to make sure the outlet has power. I've never heard of a power cord going bad.
To test the cord BEFORE the AC/DC transformer, and if you are in the US, the voltage is usually around 115-120 AC, so set it a little higher than that. I use 250 V on mine. Make sure that is AC V.
To test the cord AFTER the AC/DC transformer, check the transformer itself for DC output. Mine is about 20 V DC. Probably set the multimeter around 50 V DC.
Hope that helps.
2006-12-23 14:33:38 · answer #1 · answered by powhound 7 · 0⤊ 0⤋
Thats simple..
Look at your laptop's power cord... it says Input: 110v
and Output: ?
That will be DC so you have to set the multimeter to DC.
Something normal is like 18V for a ;aptop charger...
There is also a graphic that tells you which one is the negative and positive pole at the end of the Jack.
Good luck
2006-12-23 14:33:50 · answer #2 · answered by axo 2 · 0⤊ 0⤋
on your laptop sort, i'm uncertain, yet i recently replaced my previous Dell laptop because of the fact of actuality it boost into having a similar difficulty. After figuring out to purchase a sparkling skill cord, it even nonetheless would not paintings. I took it to a restoration shop, and that they pronounced the motherboard mandatory to get replaced. On my laptop, the area that connects with the cord is hooked as lots because of the fact the motherboard. That area boost into unfastened, and that they are apparently no longer offered one after the different. yet yet another buddy of mine (additionally with a Dell) had his motherboard replaced for a similar reason. you're able to to envision laptop restoration boards for added particular help, because of the fact of actuality your laptop could no longer be a similar.
2016-10-28 06:31:38 · answer #3 · answered by ? 4 · 0⤊ 0⤋
http://www.multimeterwarehouse.com/usingamultimeter.htm
That's all!
BTW, if your laptop is not turning on while you have the powercord inserted, remove the battery from the laptop. Then try to turn on your laptop with the power cord only. It's rare that a powercord is the issue. Try testing the current from the wall outlet aswell.
Cheers!
2006-12-23 14:31:26 · answer #4 · answered by Antil0ck 4 · 0⤊ 0⤋
Easy: Take out the battery of the laptop, plug in the cord, and see if it turns on. If it does, good for you! If it doesn't, you need a new cord.
2006-12-23 14:28:43 · answer #5 · answered by me 1 · 1⤊ 0⤋