AM1808 sata issue

Hi guy;

we met a issue about the AM1808 sata port. how can I make sure that the AM1808's sata PHY is broken?

we have one board that can not detect the sata HDD(the same load in other borad work ok).

here is the waveform I get from the issue borad when there is no sata HDD connect on the sata port. The sata tx port continue to send out the OOB signal but without the algin primitives on it. 

I also get one from the ok board, as below:

My question:

1.it seems that the issue board's sata port is broken. but it work ok in some days ago. so what will bring this port to broken?

2. any other test method to locate the root cause? and what we can do for this issue board? only to resolder the AM1808 IC??

thank you.