Officejet 7740 Printer dead. Control panel black, icons alight

[daisycutter400]

My printer control screen has gone black, but the icons still glow. On Mac it's showing offline.  I tried taking out cartridges but nothing moved when opened panel. I tried advice from 2024 turn off and hold power button 15 secs, nothing resolved. Strange as the warranty expired 4 days ago?!?!

[Hawks_Eye]

Hi @daisycutter400 

Welcome to the HP Support Community! 

Thanks for posting your query! We're here to help you get back up and running.

My sincere apologies for the inconvenience caused to you.

We'd hate for you to be stuck in a situation like this. Because you matter to us.

Please try the below suggestion again and let me know the outcome.

POWER RESET 

Let's do a power reset on your printer by following the steps below.

Press the Power button to turn on the printer.

With the printer turned on, disconnect the power cord from the rear of the printer.

Unplug the power cord from the wall outlet.

Wait at least 15 seconds.

Plug the power cord back into the wall outlet.

Reconnect the power cord to the rear of the printer.

Note: Please connect the printer directly to a wall outlet.

If the printer does not turn on by itself, press the Power button to turn it on.

Update the firmware on an HP printer

HP regularly releases new firmware versions for printer enhancements, app updates, or issue fixes. Update the firmware regularly to get the most out of your printer.

Click on the link below for instructions on how to update the firmware of your printer.

https://support.hp.com/in-en/document/ish_1776648-1643972-16

If this solution hit the spot, please come back and click "Accepted Solution" to help others find the answer. And if you'd like to say thanks, select "Yes" on the bottom left of the public post, as that would make our day! 

Take care, and have an amazing day!

Regards, 

Hawks_Eye

[daisycutter400]

Hi, Sorry for delay coming back but was called away a couple weeks.

The suggested actions haven't resolved the problem. It remains inactive, black screen white icons on left illuminated and wireless blue on right illuminated. when I ope cartridge dept, nothing happens and cartridges remained locked in position.  

The computer (Mac) simply says 'printer offline'.

Any further ideas?

Thanks

Pete

[TCSW8]

I have exactly the same issue and following the steps of unplug replug doesn't work at all. What would be the next step to solve this?

[Hawks_Eye]

Hi @daisycutter400, @TCSW8 

Thanks for troubleshooting; I appreciate all your efforts and patience.

I'm sending out a private message to assist you with the next course of action. 

In order to access your private messages, click the private message icon on the upper right corner of your HP Support Community profile, next to your profile Name.

Hope this helps! Keep me posted for further assistance. 

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

Take care, and have an amazing day!

Regards, 

Hawks_Eye

[daisycutter400]

Hi, they have suggested I talk to an online bod and given me a link but seems I have to pay £21 for the service. Im loathed to pay but will if needed and if it works I'll let you know what they suggest. Im just awaiting their response as to whether I need to pay or not.

[lp00000000000]

Hi! Did you manage to fix it ?? I have the same exact issue, and seeing on this forum MANY other do!!

[lp00000000000]

Hello, i also tried all the “reset” solutions proposed all over the forum but nothing changed.. if there are any other possible solutions please let me know! I am in italy..

[Kuroi_Kenshi]

Hi @lp00000000000,

Welcome to the HP Support Community! We're stoked to have you on board! 

To help us get started on resolving your issue, could you please share the model name of your device?

We're looking forward to helping you get back up and running! 

Best regards,

[MD246]

Hello. I have the same issue and tried all of the recommended troubleshooting suggestions with no change. Has a solution been found? Please help me to resolve this issue.