Actually your terminology is confusing me a bit. Can you be a more specific and add some details?
Are you talking about the Maxtor HDD or some AV cord/cable?
Otherwise:
First confirm that the AV cord is applicable and appropriate for your requirement.
If not, return it as the "wrong cord" and get the correct cord.
If so, return the cord as "not working".
That said, how do you know that the Max HDD fro 1990 is working and/or workable in your PS2?
Need to narrow down the problem device and situations.