i950 printer problem

Alpha One

I have a Canon i950 printer that was working very well except for a slight
streaking. After I cleaned the head several times using maintenance it got a
little better. I decided to take the heads off and use a damp paper towel I
placed against it to see if it cleaned it better. I tried this maybe 3 times
and it was getting better. However, the third time I put it back on the
printer it didn't print anything at all, nothing. I assumed it was me that
ruined the head so I ordered a new one directly from Canon (cheaper that
anywhere else on the Net that I could find).
The problem is that with the brand new one it prints absolutely nothing as
it was with the old one I thought I has ruined.
Any idea what it could be? The printer should be working fine, I see no
reason for it not to be.

Tony