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What sort of ink supplies are being used in the HP printer in question, please? is it HP OEM-original ink/cartridges, or is it a refill system, remanufactured cartridges, 'HP compatible' cartridges, or something else?
How old is the printer and what is its past history, also, please?
Being disused for that long cannot have helped it any.
Tell me one thing, please: Are you using the batteries to power it? or is it being powered from the wall outlet?
And if it was unplugged for years, there may be a power problem of a certain sort... let me know.
One piece of guesswork-advice is: leave it plugged in for over 6 hours, but turned Off... then try again.
Let me know, please. Thanks.
Thanks for the update. Keep me posted, as anything new develops.
I understand. And I'm sorry to hear about the difficulties.
Your printer is 3 years old and it sounds as if it may have a power problem and/or a circuitry problem. Would you think it worth some more effort to get it working?
Would you think it worth taking to a repair shop for repairing?