HP Officejet Pro K550 Not Powering On

When I press the power button on the printer, nothing happens. The printer is plugged into an AC power outlet. The power cord has been tested as well as the AC power outlet. Power is coming to the printer but the power switch or something beyond the power switch is failing. This printer has worked fine up until recently. I need to know how to go about testing the printer from the power on switch to inside the printer itself. The power cord is fine and I have determined that power is getting as far as the power switch. Any problem to be resolved only exists from the power switch forward to inside the printer.
Is there a fuse that can be replaced?
The power cord has no inline adapter like most printers. Therefore, the adapter, if one exists, must be inside the printer beyond the power on switch.
How do I go about taking the printer apart? I am willing to do the work to determine what the problem is. I understand electronics and can trouble shoot most issues.

Hi there bigdog5280,
This article should cover the issue you are experiencing. Give the steps outlined a shot and let us know if it helps.
Best of Luck!
You can say thanks by clicking the Kudos Star in my post. If my post resolves your problem, please mark it as Accepted Solution so others can benefit too.

Similar Messages

HP OfficeJet Pro K550 not working after restoration

I have succesfully restored from a SuperDuper! backup. Everything is working, however I noticed that I cannot print. The HP software was installed and finds the printer, but when I click on print, it brings up the printer queue, and then stops it after 5 or so seconds.
I have removed the software and re-installed it countless times, even from a separate administrator account. When I remove it, it says that some files were shared and couldn't be deleted. No matter what I do it always says this. I've repaired permissions on the disk (for which it finds plenty that HP has mucked up), to no avail.
Has anyone else had similar problem with HP software?

I don't know what the **** was wrong with it, but I did a clean install of Tiger, and put back my backup DMG and it is now working. I just hope it doesn't break!

Unable to install officejet pro k550 in windows 7

Driver failed to install. Have also tried info from this page http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02663702&lc=en&dlc=en&cc=us and still cannot get printer to install. Either as a network or when connecting via USB. USB printing gets installed and is ready and working but not the printer driver. I am doing everything on the Win 7 laptop as an administrator. I've installed Dell, Lexmark and an HP Color LJ CP1215 with out any problem but not this officejet pro k550.

Hello jm092749.
Welcome to the HP Forums.
I understand you are seeing a "MSVCR90.dll is missing" error when trying to install your printer. I will do my best to assist you with this.
This issue can be hardware or software-related. I located a complete guide to troubleshoot this issue. If you follow the instructions in order, you should be able to resolve the issue: How To Fix Msvcr90.dll Not Found or Missing Errors
I believe the issue will be resolved after following these steps. If not, the computer is facing a hardware issue, and will likely need to be repaired. Either way, please post your results. If this was the information you are looking for, please mark this post with an Accepted Solution and Kudos. Doing this will allow others to locate this information easily.
Thank you for bringing this issue to the HP Forums. Have a great day!
Mario
I worked on behalf of HP.

HP Officejet Pro K550dtwn NOT 10.5 Compatible, HP considers it obsolete

I have just found out from HP support that they have decided NOT to write drivers for the Officejet Pro K550 duplexing printer for OSX 10.5
The HP officejet pro k550 duplex printing prints the second page upside-down.
The current driver, 2007 10/26 v. 9.7.1 DOES NOT correct this problem.
They do NOT note on their site with the driver that the problem will not be fixed. They consider the printer obsolete even though they continue to advertise it as being supported under 10.5.
Leopard shipped with print-only drivers, which means that they do not support any hp printing options, like duplex under Leopard. So the ones included on your Leopard install disk will NOT print duplex.
Here are some of the original posts:
http://discussions.apple.com/message.jspa?messageID=7282125#7282125
http://discussions.apple.com/message.jspa?messageID=6134277#6134277
Message was edited by: lionzpaw
Message was edited by: lionzpaw

If the Tiger drivers worked underneath Leopard, wouldn't HP just use the old drivers instead of doing nothing?
Possible but I doubt it, I have a feeling that the drivers had to be downloaded, even for tiger. Trying to remember the last time I reinstalled tiger.
Message was edited by: lionzpaw

Margins ignored on OfficeJet Pro K550

I have a VB 2008 .NET program that I wrote. It prints labels. It works perfectly on my HP LaserJet 1018. I set the margins depending on which label on the sheet I want to print and it prints on that label. But on an HP OfficeJet Pro K550, it shifts the print down and to the right. I tell it to have a 0.5" left margin and 0.6 top margin and I get 1" at the left and .75 " at the top. The other two margins are correct and the resultant labelis the correct size, just shifted down and right.
Obviously this won't work because it doesn't print on the label!
I tried MS word 2003 and told it to print with 1/2" top and left margins and it worked.
So why does it work on the LaserJet and not the InkJet with the same margin settings?
Thanks......... Carl

HI goj,
Here is a link to a document about using the two-sided printing on your auto-duplex unit.
Make sure you follow all of the steps and this should resolve your issue.
Let us know if this helps or if for some reason your problem is still happening.
If I helped you at all it would be great if you clicked the blue kudos star!
If I solved your post please mark it as solved to help others.
I'm a printer tech with HP.

Officejet Pro K550 Driver Failure in 10.6.8 & 10.7.4

A coworker's HP Officejet Pro K550 has stopped printing. Initially the error codes from the front panel indicated a paper jam. After disassembly (which is NOT easy btw) and a complete cleaning, the printer still refuses to function. I can print test pages all day long by holding the Resume button on the front panel of the printer. However, once I send a page to the printer from Microsoft Word, Preview, or any other program, the printer seizes and both the Power and Resume button flash as if there is a paper jam. There is none as no paper comes out. Curiously, if I use a Generic PCL Printer driver instead of the HP Officejet Pro K550 driver, I can print in black and white just fine. I've tested this on laptops running 10.6.8 and 10.7.4 with the same results. I've reset the printing system on both machines with the same results. I'm officially out of ideas. Can anyone think of what's going on?

hi there,
i get the exactly same error,
i can also print by Generic PLC driver,
or output a config test page by holding power and pressing red X once on the printer.
but i always get "drucker ist belegt" which means "printer is in use" error when i try hps mac osx K550 10.7 driver !
everything works (hp utility tools to calibrate etc. stuff) except for printing from whatever application i use
what the hell is happening here? and how can i get full funtionality back?
i already have Firmware version 20061019 SPP0013H which seems like the only one i could download-
but, although i would possibly need this firmware update-
there is no way to install the firmware update,
since clever people of HP decided not to leave a tool for osx lion users,
the manual for doing firmware updates is only written for 10.4.8 users (maybe half a dozen years ago?!)
i cant find a update firmware option anywhere although i see a firmwareupdate.task plugin which seems to be for hp printer utility.... but i cant use it sensefully ....
what are you up to? making me crazy? making people buy new stuff?
is there any solution in sight?

HP Officejet Pro 8500A not printing from black cartridge

This happened in an instant-no warning. I have tried all known troubleshooting and have disconnected. The cartridge is one month old - no error messages.

Hello there! Welcome to the forums @Mickgogs ,
I would recommend scrolling up to my last message about the black ink not printing. I have posted a troubleshooting guide to help resolve the issue. If the steps don't help, call HP directly to see what your options are.
Re: HP Officejet Pro 8500A not printing from black cartridge
HP's contact info:
If you are calling within North America, the number is 1-800-474-6836 and if you are calling outside of the US/Canada,: click here.
Have a great weekend
R a i n b o w 7000I work on behalf of HP
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HP Officejet pro 8500a not printing black

HP Officejet pro 8500a not printing black, we put new cartridges in two times, we replaced the printer head. If I change the document to a blue color, it will print that.

Hi Martymartin,
Welcome to the HP Support forums. I gather that your Officejet Pro 8500a will not print black ink but will print blue ink.
I have included a document with trouble shooting steps to take to help resolve this issue. If the steps in your document don't resolve the issue please call our technical support at 1-800-474-6836 if you live in the USA/Canada region. If you live outside the USA/Canada region please click the link below to find the Technical Support number for your country/region.
Printer Does Not Print Black Ink or Color Ink, or Prints Blank Pages
Hewlett Packard Technical Support
Regards,
Happytohelp01
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Please click “Accept as Solution ” on the post that solves your issue to help others find the solution.
I work on behalf of HP

Ink low lights on the Officejet Pro K550

I have this officejet pro k550 in which some lights went on indicating I'm running low on ink in some of the color cartridges. I replaced all the cartridges and the lights didn't go out. Now I look at "utilites" (on my Mac computer) and it says that I'm running low of ink. Do the lights automatically go out when you replace the ink cartridges or do I have to reset something? How can I be out of ink when I'm using new HP cartridges?
HELP PLEASE.

Did you find a solution? I have done the exact same thing and spent many hours trying to resolve this to no avail! Now I have 2 printers that won't work!!!

Officejet Pro K550 in Windows Technical Preview

The most recent update to Windows Technical Preview Build 9879 keeps stopping the print spooler when the Officejet Pro K550 is attached. It worked fine in the previous builds. Any ideas? I need to keep the USB cable disconnected until I want to print and then uninstall the printer each time or keep restarting the print spooler each time I want to print anything.
Thanks

Hi,
Try running Windows Update and check if any driver update is available, any drivers for the Technical Preview are only available from Microsoft Update servers.
If the issue persists, you will need to wait till an update will become available by microsoft, as a beta OS you are likley to experience this kind of issues, devices hasn't have been tested much, as well as the entire operating system.
Shlomi
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IP Printing: HP OfficeJet Pro K850 not in driver list

Hi
After hours of work, I reckon I cannot solve the following problem on a iMac running Tiger 10.4.11 by myself. I installed a HP OfficeJet Pro K850 on my Mac directly trough USB, and everything worked fine. Then I decided to upgrade the whole system by connecting the printer trough a D-Link DP-G321 Print Server, in order to share the printer for the entire network. Despite everything works fine with Windows PCs, I can't get it to work with the Mac. By adding the K850 to the printer list, after typing the IP Address of the print server and the queue name, I have to choose the printer manufacturer and the model. Sadly, there is no entry in the HP list saying OfficeJet Pro K850, nor any similar printer models. I then simply tried to add the printer as a Generic PostScript Printer and print a document. I am sure there is a connection between my Mac and the printer, for the printer began to print strange texts until I pressed the cancel button on the printer. So it seems to be a driver problem, in fact the printer does not appear in the driver list, although the driver is (or should be) installed on my Mac (from the HP OfficeJet Pro K850 driver CD). How can I get the driver in that list? Appearantly, there is no "standalone" driver provided by HP, since the driver should be integrated in Mac OS X Tiger (at least that's what HP told me).
Any help would be very appreciated!

You can find this issue addressed here many times - but I guess you would need to know some background first...
There are two kinds of drivers on OS X - Carbon and CUPS. Not like on Windows, where a driver is a driver. Manufacturers of non-postscript printers mostly provide Carbon drivers, where they can specify which comm protocol it uses. Your HP driver is written for USB only. You need a CUPS driver to use the network protocols, which are all part of CUPS.
Install the 3-part hpijs driver:
http://www.linux-foundation.org/en/OpenPrinting/MacOSX/hpijs

HP Officejet Pro 8100 not printing from PC

Have a HP Officejet Pro 8100, suddenly stopped printing from PC, noticed base shaped symbol showing up above ink display, on/off button also is flashing when print is requested, checked printer status stating there is an error. Using Microsoft office 2010

Hello,
Please try the below steps..
While the printer is ON, unplug the power cord from back of the printer.
Wait for 30 seconds.
Plug in the power cord to the printer.
Wait for the printer to go silent.
Remove and re-insert the ink cartridges.
Regards,
Jabzi
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HP Officejet Pro 8100 - Not Printing

New HP Officejet Pro 8100 - driver installed for wireless network printing.
Printed Test Results - "No Problems Found....successful setup of your wireless printer".
However, when I try to print I can see the request in the print screen, but it says "Print file was not accepted". This is happening from the computer the driver was installed on (Mac OS X Ver 10.8.4.
When I try from another iOS device, I can see the printer, and can request the print job, It says its sending to the printer, but the job never shows up in the print que and doesn't print.
Help!!

What router? Have you restarted it?
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I am employed by HP

HP officejet pro 8100 not printing documents when asked, and slow to respond.

My Officejet Pro 8100 has allways been used wireless. It allways had a lag when asked to print and producing the document. Often the unable to connect to printer message comes up, then shortly latter it started to print.
We have now switched to Vergin Media ISP. The printere was set up to the new network as before no problem. The router is lacated downstairs by by our TV where the cable enters the house. Our 2 pc's are now wireless due to this (one windows XP and one Windows 7). Then there's Ipads etc.
Conectivity is not a problem the pcs are located in our study with the printer upstairs. My Ipad works in the Garden so theres plenty of range. All devices are on the same conection.
The problem with slow printing is now worse. Ask to print and often nothing happens. Switch printer off/on and it may print the last comand of not. It may accept the next command to print or not. Indescrimnently it may print 'misssed prints' at any time.
Basically it cannot be relied on to print when asked to, really frustrating!! The printers wireless indicator is lit its conected to the network. Any ideas as this is a real pain. Remote printing from a phone is a no go as it probably wont happen.
We need to print and it happen.

Hello @Ants9,
Welcome to the HP Support Forums!
I would like to assist you today with resolving the slow printing issue that you're experiencing with your networked HP Officejet Pro 8100 ePrinter from your Windows computers and other devices. I understand that this issue began with your original router and now is occuring with your new network. I am going to run you through some troubleshooting steps below to resolve this issue.
Step 1: Run Print and Scan Doctor:
To verify that your printer is properly detected on your Windows XP and Windows 7 computers I would like you to download and run the HP Print and Scan Doctor Tool. This Tool will run on your computers and 'fix printing' issues for you. Should any driver, connection, or software conflict be found than the HP Print and Scan Doctor Tool will attempt to resolve those conflicts for you.
Please click here to download the HP Print and Scan Doctor Tool. Please download this Tool on your Windows XP and Windows 7 computers.
Once the Tool has completed, please test printing again. Should the issue persist, please proceed to the next step.
Step 2: Powercycle Network:
First, unplug the power cable to your Router
Once your Router is unplugged, turn off your printer
Next, shut down your computer
After 30 seconds to 1 minutes, plug your Router back in
Next, turn on your printer
Turn on the computer
After a few minutes the internet connection will return. Please check on your Windows computers and ensure that you're able to browse to websites before continuing. Once the network is up and running again please test printing to check the printing speeds.
Should the issue persist, please proceed to the next step.
Step 3: Update Firmware:
There is chance that corrupted programming in your printer could be causing the slow printing issue. Therefore, I am going to have you update the Firmware Version on your printer.
Please click here to download the latest programming on your printer. Once the website opens select the Download button on the top left. Follow any onscreen instructions to send the Firmware Update to the printer. This update can be run from either the Windows XP or Windows 7 computers.
Please test printing again to verify if everything is now working as it should be.
Please respond to this post with the result of your troubleshooting. I look forward to hearing from you!
X-23
I work on behalf of HP
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HP Officejet Pro L7580 not recognized and unable to install

Hello everyone,
We purchased a MacBook Pro and for sometime we had it connected to our HP Officejet Pro L7580 using its usb connection. This MacBook Pro is running Mountain Lion software with the current printer update. We moved and relocated our printer to a more suitable room. In our house we have two routers. Our main router is Actiontec MI424-WR and the secondary router is Dlink DIR 655. The Dlink is connected lan-to-lan with Actiontec. The printer is connected to Dlink router which is downstairs. I have spent considerable amount of time figuring out why our MacBook Pro doesn't recognize this printer. We have other computers at home that runs in unix (Ubuntu) and windows (Windows 7) and those computers are able to print, scan, and fax to this computer without problems. The connections to all computers are the same which is wireless. I have read a lot post in this community and as well as HP community and it doesn't provide any solution to this problem. I am able to ping this printer from the MacBook with no problem. When I install this printer using ip method the scan option is not there. However if I bring the computer downstairs and install it using usb the scan option appears. I am thinking that HP didn't provide a driver for scan option if you're connected wireless or ethernet. But I found out that the current drivers for mountain lion for this particular printer has a scan capability. I need some help in figuring out what's going on with this. I would like to be able to scan using this laptop where I don't have to physically connect it to the scanner. I am completely lost with Mac.

Apple support:
Network Printer Troubleshooting
Reset Printing System

HP Officejet Pro K550 Not Powering On

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