Laserjet 6040 control panel blank

We have a couple of 6040 MFP's that now have the same fault, when they are powered on the display panel will light up but nothing is displayed and we are unable to use webjet admin via the NIC. However if you leave the printers off for a couple of days and then turn them on they will often work ok (the display is fine and the nic is working again).
We have checked all the connections to the dispaly so I'm guessing its a hardware fault - has anyone else had this?

Hi Bulldog_Cymru,
I suspect your question would be better answered in the HP Enterprise Business Community, as the HP Laserjet 6040 is a commercial model.
My technical expertise is with consumer products and software, I am sure the commercial folks would be happy to help if you re-post your question for them to answer. The HP Enterprise Business Community is an HP Forum designed for the Commercial and Enterprise customers to help one another. I am sure you will find some HP folks there to help too.
Click here to log into the commercial forum > HP Enterprise Business Community
Best of luck.
Please click the Thumbs up icon below to thank me for responding.
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Sunshyn2005 - I work on behalf of HP

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