HP 75

[Paul Berger (Canada)]

(03-04-2015 06:35 AM)Garth Wilson Wrote:  My Thinkjet no longer prints. It acts like the cartridge is dead, but all cartridges act the same. Absolutely no printing at all, even right after priming the cartridge and cleaning the contacts. The printer goes through the motions, but the paper stays totally white. Are there any easy things to look for? It's not much of an issue, because I go through other interfaces to print with parallel dot-matrix impact printers.

Have you ever had ink leak out onto the head carriage? The ink is slightly corrosive and if left on the contact area it will corrode away the connections. The contacts will look fine as the plating seems to protect them but there is a little of the bare copper foil on the flexible circuit that connects to the ink cartridge. The symptom is usually dropped dots but there is also a common connection that would cause no printing if broken.