Question about HP Officejet Pro L7780 All-In-One InkJet Printer

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My HP Office Jet Pro L7780 has suffered a complete failure - screen is bright when power is on and blank except for vertical coloured thin lines - rather like an elongated bar code. It has just shipped from Dubai to UK but was totally enclosed in a giant parcel of bubble wrap and I placed it safely in the shipping container with several fragile objects that were not damaged so I do not think shipment was a factor. However when setting up, by mistake the wrong power adaptor was plugged in - it was not over voltage but under voltage so could this have scrambled something in the memory to give this non-function situation? Frank

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Screen is damage.

Posted on Jan 02, 2013

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Posted on Jan 02, 2017

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SOURCE: printer output has shadows, blurring, streaks, lines, poor color

Seem like blocked hole(s) on the color print head...
Most likely if there is a deep clean option then do it (may need a few times to unblock a hole or never).
Also get the printer physically cleaned up if you can see dusts inside (vrtical lines on color bars).

Posted on Mar 20, 2009

  • 1684 Answers

SOURCE: HP 7590 office jet pro scanner does not communicate

Hello,

The scanner function is not available when you are connected wireless, you must be connected via USB to your PC for the scanner to function correctly.

Buddy
Corporate Computer
Over 21 years of PC and printer support/repair

Posted on Jun 18, 2009

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............. thank you ......(HAMID)

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Darshan

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