Question about HP PhotoSmart 7960 InkJet Printer
I've got two 7960's running and there are no firmware updates. I've also found them to be highly reliable and so far (touch wood) they've been unaffected by thunderstorms.
I think that your problem is probably due to a bit of dirt on one of the cartridge contacts, often this is caused by using third party carts which have tried to copy HP's "protective tape" with one which can leave a sticky residue. Even HP's tape sometimes does so but it's very rare.
Turn the printer on and open the lid, wait for the cartridge docking station to retract and remove the tricolour 57 cartridge and you'll see three double rows of contacts behind.
With the lid open and the cartridge removed, remove the power socket to the printer from the wall outlet. Leave the printer for ten minutes or so and have a cup of coffee. Afterwards, return to it armed with an anti-static wrist strap earthed to a suitable point, a piece of thin card or stiff paper wide enough to fit under all three carts and a pencil with an eraser tip (with plenty of rubber left above the metal ferrule) and some cotton buds/q-tips.
Slip the card beneath the carts, if possible smear the upper surface with a little Pritt-Stick or similar adhesive first but it's not essential. make sure you're still earthed and use the eraser tip on the central row of contacts. The card will catch the debris (and stick to it if there's adhesive). If you see anything other than pristine contacts then they need cleaning. Do not use a hard (ink) eraser as they sometimes contain metallic particles and the residue that they leave is abrasive.
When you think you're done, use the cotton buds to gently sweep any remaining debris onto the card. Carefully withdraw the card and refit the 57 cart, but clean the cart contacts first in the same way before doing so. Reconnect the printer power supply and test the printer.
Hopefully it should now work, if not repeat the process but finish off with lint free tissue on the end of your fingertip moistened with isopropyl alcohol, and repeat on the cart..
If the cartridge doesn't work after this then the flexible pcb inside the printer is damaged If you can dismantle the printer and trace each track then you *might* be lucky enough to find the break and be able to bridge it with electrically conductive paint . If you can't then your printer will need a new flexi pcb, but they're not cheap to replace and you may find afterwards that the fault is still elsewhere due to something like the possible static damage you mentioned or just an unlucky random failure.
If you lived in the UK I'd let you have one of the three others I have stashed in the loft, new and unused. I only bought them as unsold stock disposals because it was cheaper than buying replacement sets of cartridges!
I hope this has helped you, and only ask in return that you return the favour by rating my answer.
Posted on Jul 10, 2009
Yes, I believe that you didn't take off the long peice of of plastic which covers the cart.
If not, try shaking the color. then put it on again.
Hope this helps!!
Posted on Jun 26, 2009
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Posted on Jan 02, 2017
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