Kingwin PC Computer Power Supply Tester, Digital LCD Screen, ATX/ITX/IDE/HDD/SATA/BYI (KPST-01)

I have been building computers for over 20 years and this is the first tester I have had. Wish I would have gotten one a while ago. I was having some intermittent issues with one of my computers and could not figure it out since it would power on, but some drives would not work or take a while to show up in windows. also some weird USB issues even tho the computer would boot up and run, but then sometimes crash. I put in a spare lower watt power supply and the computer seemed stable, but I really needed to confirm where the issue was because it could have been the CPU, motherboard or PSU at this point. The directions were a little awkward and seemed contradictory saying. make sure to only plug one cable in at a time, but then saying its ok to leave in the 24 pin power, cpu power and pcie cables. Everything checked out fine so I started testing my molex and sata power cables. So one sata connector was flaking out and I had to seat it right for testing. At first I thought the tester was flaky. ended up that connector was flaky, Then testing other Sata power, one showed all 3 leds lit, one only ever showed 2 lit. It was all over the place and I need to test on another psu I had to make sure it wasnt the tester and what lights were supposed to be on. Testing a new spare PSU, every single Sata connector showed 3 lights and so I determined the old PSU is what had the issue with some flaky connectors or a bad power rail in the PSU. I am not sure since it has been in service a while and I never had any issue with it. But I was able to successfully determine my issue saving me the time and cost of trying to find or purchase other parts for testing. This item is great and something I will always test from now on because it is so easy to use.

Works well to test power supply.

The ability to test used and older power supplies is becoming more and more important. A DYI computer builders are reusing chassis and power supplies it is important to know when those used supplies are good or not. Knowing that you can reuse a power supply can save money on the next build. Knowing when to discard a power supply can prevent damage to a mother board and/or drives when no voltage is on a specific connection, or worse when the wrong voltage is on a connection. The Kingwin PC Computer Power Supply Tester peace of mind in knowing when a power supply can be used or must be discarded. The instructions are simple and easy to read. It has saved me money and prevented me from damaging a new mother board. I highly recommend this as a needed tool for any DYI builder.

This works fairly well

Easy instructions. I was 5 hours from home doing service and was able to diagnose problem immediately. I will carry it with me to all service calls.

The device shows accurate voltages but shows a false failure (Blinking PG display) if the PG signal is 120ms or less. PG signal needs to be between 100ms and 500ms which means 120ms should not show as a failure.This is a problem with both this one and the one from Fuhengli since they are both the same design but with a different logo.It is still a very useful device for showing the voltages. Just don't believe a blinking failure of the PG signal. The design should but updated since many of the newer Power Supplies will show a PG signal below 150ms.

Works well I have this on computers bad 3.1 volt causing bad memory only after reboot .

works well