I suggested trying a different daughter board as perhaps your current one may be defective. As it is a removable part, it wouldn't be so bad to try and see if a different one would make any difference. This would have to be an A4000 daughter board. Do not try and use your A3000 one.
A3640 that's not working could be an entirely new issue. Have you set the clock jumpers on the motherboard to EXT position? This is required in order for A3640 to work.
