I got the same chips (replaced DA with D) .. I bought them on ebay from the states also with sockets.
The TV had showed the fault for about two weeks. Failed for good today.
I used a RS solder sucker to help remove the old chips.
I changed IC6400 and tested (I did this one first as it's easier to get at). This didn't work.. still got the 10 flashes.
I changed IC8002 and tested. This did work.
Thanks for the info guys!
Regards,
John