There are two tests, firstly remove the PSU from the chassis and connect the mains cable to it. The handle should illuminate green when the button is pressed. If it doesn't, the PSU is faulty.
Secondly, with the PSU inserted in the chassis (with internal components connected as they should be for normal operation) and mains attached, but without powering the system on, pushing the button should illuminate the handle.
If the second test fails, it means either the PSU is failing under load or an internal component is pulling it down (occasionally it can be both)
Did the tests and it's the second scenario. Since there can be so many parts that can be faulty, could you provide some guidance into what to test.
I dont know if it's the bridge between the PSU and the motherboard. The board with the **bleep** 24 pin connector the two 8 pins cpus connectors and the 6 pin PCI connector or if it's the motherboard.
Could I start the motherboard with just one cpu ? If so can do I need to use cpu #1 and do I need to connect the second 8 pin connector ?
It is most likely to be the PSU but without being able to swap parts with known good ones it invariably involves a certain amount of guess work. You can disconnect all components attached to the motherboard (CPUs, memory, graphics card, HDDs etc) Disconnect all the power cables from the PDU then try the PSU test, if it passes, try adding the 24 pin and re-testing. If it passes with the 24 pin attached then start adding back components one at a time starting with CPU #1 and CPU #1 power.
The point at which it then fails indicates the likely component that is causing the issue or it could just be the point that the PSU gets overloaded.
DELL-Alasdair R
4 Operator
•
754 Posts
0
February 1st, 2018 04:00
Hi mkfly,
There are two tests, firstly remove the PSU from the chassis and connect the mains cable to it. The handle should illuminate green when the button is pressed. If it doesn't, the PSU is faulty.
Secondly, with the PSU inserted in the chassis (with internal components connected as they should be for normal operation) and mains attached, but without powering the system on, pushing the button should illuminate the handle.
If the second test fails, it means either the PSU is failing under load or an internal component is pulling it down (occasionally it can be both)
mkfly
3 Posts
0
February 3rd, 2018 07:00
Did the tests and it's the second scenario.
Since there can be so many parts that can be faulty, could you provide some guidance into what to test.
I dont know if it's the bridge between the PSU and the motherboard. The board with the **bleep** 24 pin connector the two 8 pins cpus connectors and the 6 pin PCI connector or if it's the motherboard.
Could I start the motherboard with just one cpu ? If so can do I need to use cpu #1 and do I need to connect the second 8 pin connector ?
DELL-Alasdair R
4 Operator
•
754 Posts
0
February 5th, 2018 03:00
It is most likely to be the PSU but without being able to swap parts with known good ones it invariably involves a certain amount of guess work. You can disconnect all components attached to the motherboard (CPUs, memory, graphics card, HDDs etc) Disconnect all the power cables from the PDU then try the PSU test, if it passes, try adding the 24 pin and re-testing. If it passes with the 24 pin attached then start adding back components one at a time starting with CPU #1 and CPU #1 power.
The point at which it then fails indicates the likely component that is causing the issue or it could just be the point that the PSU gets overloaded.