Re: the digitizer, you likely didn't get it plugged in properly before reassembling. Try again.
Re: the LCD, as tsac mentioned above, you have to get the same part # as the one you are replacing. BBs unfortunately will often have more than one LCD part #. "The blackberry torch 9800 LCD screen is currently available in two versions: their codes are respectively LCD-26252-001/111 and LCD-26252-002/111. These two versions are not compatible with each other." This and much more from this website.
You need to compare to your old LCD. If the numbers do match, it is also possible you just got a bad LCD.