Differential expansion question

[cjrobin27]

I have an expansion like in the first picture connected to my f16. Output D on the expansion is connected to 1 differential receiver. Port #3 on that receiver will not work. I've tested and replace all the rj45 connections. I know it's not the pixels because when I swap to another port on the same receiver they work. Would the chip in the second picture go bad in a sense that 3 of the 4 ports on the receiver work and one wouldn't? i've also swapped the receiver and still port #3 does not work.
Thanks

[cjrobin27]

pictures would not upload in original post

[JonB256]

It takes a few "non attachment" posts when you're new before you can do attachments. Spammer protocol.

[cjrobin27]

It takes a few "non attachment" posts when you're new before you can do attachments. Spammer protocol.

Was wondering....I tried a few times with no luck.  Thanks for letting me know