Hi i have an epson sx400 wifi printer and it wont print black i`ve run cleaner a lot and all other usual things but no joy, it was fine till last inks changed which it did`nt recognise but ok now just not printing in black ! any ideas ? I was thinking of stripping it down to see if i can clean it manually if possible as it maybe blocked somewhere, but if no good or lose my way i`m thinking of a cheaper good replacement but i wondered which make would be cheapest for inks ? any advice please . Thanks.