How to use a multimeter to test Power supply?
My iMac does not start up. I followed the light test to see if the problem is a bad logicboard. But I´m not sure, since the second light shows quickly and goes when I press the power button in the logicboard. So to be sure I want to test the power supply. I have a multimeter taht I´ve been using only to measure batteries and now want to try with the power supply. The problem is that I don´t know how to set it and use it. Sorry for my english
Bu iyi bir soru mu?
Hi, in mine it is not if the motherboard or the PSU because if I plug in only the fans work, the capacitor are good and are the good Y.
It is easy to set up and measure the voltage. The power supply is AC resource. You can follow my step to do;
1. Turn to AC mode position on the meter. If you have a multimeter has auto detection function, you don't need to do this step.
2. First, use two probe plug in two holes of the power supply.
3. The monitor will show a value of AC voltage. If the source does not have power. It has not value.
That's it .
Read more function in here.