Looking for a IBM 5110 EMI filter.

[Stegeman, Henk HJ SITI-ITIBHW5]

Hi all, 
 
Who can help me with an EMI filter from an IBM 5110 ?
Mine has an internal non-repairable short circuit.
 
This EMI filter is a CORCOM type F2280 and is located in the mains 
entry box underneath the screen tube.
 
Any one ?
 
Thanks Henk