Problem, Tuner A is well recognized, but gets no channels.
Manually add the channel list gives no TV picture or no signal message, or maimed picture.
It looks like a bad reception, but the signal is strong.

Check near the U700 (xilinx spartan xc3s500e chip) the resistors on good contact.
In my case, the R820 did not make good contact.

(Thank you to Johnny_B for publishing it)

All the best about hardware/support from Johnny_B, link :
http://jb8a8f8.com
http://jb8a8f8.nl
_________________________