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
Thank you
crwdns2934109:0crwdne2934109:0
crwdns2944067:02crwdne2944067:0
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.
crwdns2934271:0crwdnd2934271:0 afields crwdne2934271:0
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.
crwdns2934271:0crwdnd2934271:0 Jose crwdne2934271:0