Brand new PSU fails PAT test worse than old PSU

[Darryl_Wilcox]

Hi there,

 

We have a PC that failed a PAT test, the lead was fine on it's own and so it has to be the power supply itself. We bought a new power supply which is fine for the job and that has failed, and failed the test worse than the original PSU inside the PC.

 

Any ideas? Should I take it back to the shop and ask them to replace it?

[Andrew_C]

How has it failed? Earth bond, insulation or leakage?

[Hightower]

EDIT: Just re-read post