asked Jan 7, 2010 at 9:35am
Hp HP OfficeJet Pro L7680

Hp office jet pro L7680 printing problems

Hi ... I have 2 problems:

1 - the black ink is not printing. colour ink prints fine. I have installed new genuine hp black cartridge (previously has been compatible tho) no black lines at all, gradually got worse with other cartridge so swapped to new one but still no black lines.

I've tried the clean print head, align etc but no joy. Any ideas?

2 - the printer is used on a home network but the ip address keeps changing and I have to manually correct the port ip address. Why does it do this and how to stop it?

Any ideas/help greatly appreciated.

Printer failures seem to increase when you need them the most!