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01-04-2012 12:06 PM
In my case it was a Cartridge World refill. It would print properly that color (yellow), but the printer reacted badly to it. Replacing it with a brand new HP yellow cartridge fixed the problem.
But I still think a firmware update for the 8500A is in order, as there is no indication on the printer display that there's an issue because a cartridge is not properly recognized.
01-04-2012 12:12 PM
Actually, it has been conveyed to technical support: I have sent a tech supervisor an email about my discovery and asked them to fix the firmware.
His answer has been that non HP ink is not covered by warranty.
So I mailed this guy back and explained to him that the issue is not triggered by non-HP ink (ink is just ink!), it is triggered by a number of pages printed by a same cartridge that is "too high". I pointed out the fact that HP and Epson had been sued in the past (class-action lawsuits) over cartridge lock-downs triggered by "too much" use (aka self-destruct code or simple refusal by the printer to print anything as long as said cartridge is inside the printer).
He then answered back telling me he had passed my issue to HP. That was two weeks ago.
01-31-2012 11:18 AM
Finally resolved after:
- 3 x replacement printers (bare printers - no power supply, no printheads, no duplexer, no inks)
- 1 x new power supply
- 1 x new set of printheads
- 3 weeks
Unfortunately, by sending only "bare" replacement printers this meant that I had to swap over power supply, printheads, ink and setup each time.
The first replacement showed exactly the same symptoms/errors
The second replacement did the same again
The third replacement did the same
Then they sent a replacement power supply, but by then the printheads had stopped working (agent said they were not designed to be taken in and out so many times!)
Replacement printheads then worked first time.
So........repair was a combination of new power supply AND/OR printheads AND/OR machine., but not possible to pin down which was actual cause.
Also for those with the "printing" hanging problem, the simplest way to overcome this is to open and close the ink cartridge door - this "kick-starts" the thing back into life without having to reboot by switching on/off and waiting for the whole start-up cycle (which wastes ink too).
On reflection I could probably have lived with this, rather than having my office full of faulty printers - although I can now set up an HP 8500 with my eyes closed.
I have made formal recommendation that HP simply send out a complete unit in future instead of this "part by part approach to problem solving. It would have saved them over GBP 200 / USD 300 in shipping charges across Europe for all these replacements and their return shipments. And I'd have had a working printer in 24 hours, not 3 weeks.
It's a shame because when working the printer is an excellent product - but there's obviously something very wrong with the fundamental design for so many to be going wrong like this.
08-04-2012 05:35 AM
My HP OJ Pro 8500A Plus suddenly has stopped printing consistently. After a power up, it prints for a few minutes and then consistently displays a "Now Printing" message whether or not a print job has been sent to it. While in this mode no print jobs will print out. Only after I turn it off and back on can I resume printing, but it only lasts a few minutes and the problem repeats itself.
Does anyone know how to fix this problem?
08-04-2012 06:53 AM
From my previous post, above, the simplest "fix" was this:
".................open and close the ink cartridge door - this "kick-starts" the thing back into life without having to reboot by switching on/off and waiting for the whole start-up cycle (which wastes ink too)."
Although this does not solve the root cause, it makes printing possible.
Since my last post, the 3rd replacement printer from HP failed, so I demanded that HP replace with a completely different model - the HP Officejet Pro 8600 Plus. This uses completely different ink cartridge technology (no separate print head etc) and so far (3 months) has been fine.
If your 8500A is still in warranty, call up HP and refuse to accept a replacement of the same machine. Quoate all these forum entries and tell them it is well know problem witht he 8500A and you beldeive the product is "not of merchantable quality" and therefore is in breach of the Sales of Goods Act (UK law territories).
The fact that the 8500 is no longer on sale in major retailers tells you everything about this product, only months after it was launched.....
Hope this helps
02-10-2013 10:17 AM
My 8500A Plus gets stuck in "now printing" and "printing fax in memory" - it hasn't caused me ANY PROBLEM until recently (once I agreed to allow my printer to communicate with HP for quality enhancements!!!! I'm DAM% MAD!!!!!!!!!!! I am on deadlines and I NEED MY PRINTER TO PRINT WHEN I NEED IT TO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
02-10-2013 12:12 PM
Thank you - I'm not sure if it's still under warranty or not. I've owned it for over a year. I will try and see if they will replace it with another model.
02-12-2013 10:07 AM
Was HP Support able to resolve your issue when you contacted them?
04-19-2013 06:16 PM
i had same iseue for a few months now but today i ran realignment and other printere tests and now the problem is gone but not sure for how long i hope that never happens again and hop anyone with this proble runs tests and problem goes away