Need help to suppress interference in a power supply.

[ninja_zx11]

Hello friends, I just modified 110~220v 12V 100 amp JD200 server power supply(from dell poweredge6800) for my high current needs.I had to reroute the AC input from front of the supply to the back.Its working good but i am having strange problem.It works fine during the day but sometimes it shuts down and error led lights up (LED displays over voltage,under voltage,over current or fan error)during night(after ~7-8pm).
I am not an expert and could be 100% wrong but suspecting that interference in the power line is max at that time and because i rerouted the power cord and its very close to the circuit board which monitors voltage and current errors and somehow its tripping the error.Please check the attached picture showing power cord runing close to the daughter board which monitors the voltage and current.
So could anybody please suggest me how to remove interference?Can i use a snapable ferrite core on the ac input cable?Or any other way?Thanks

[CapLeaker]

Re: Need help to suppress interference in a power supply.

Did you replace the fan already?

[japlytic]

Re: Need help to suppress interference in a power supply.

If the fan is running, are all of the case covers installed?
It could be overheating due to poor airflow when all of the covers are not installed.

[ninja_zx11]

Re: Need help to suppress interference in a power supply.

If the fan is running, are all of the case covers installed?
It could be overheating due to poor airflow when all of the covers are not installed.

Yes i am running it with all fans installed and the cover closed.So heat is not an issue.

[CapLeaker]

Re: Need help to suppress interference in a power supply.

what happens if you put an online ups in front of it to condition the power all the time?

[budm]

Re: Need help to suppress interference in a power supply.

Did you have the problem before the modification?
Did you monitor the LINE Voltage feeding it?