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Top Student
Posts: 2
Member Since: ‎03-02-2014
Message 1 of 86 (38,205 Views)
Accepted Solution

Black Ink Won't Print - HP OfficeJet 4620 - FIXED!

When I replaced the black ink cartridge with an XL version of black, it would not print.  I went onto this forum and saw that some had problems and were not able to resolve them. 


I ran the HP Print and Scan Doctor and upon cleaning the heads, EUREKA!  It now works!


Good luck!

Accepted Solution

Re: Black Ink Won't Print - HP OfficeJet 4620 - FIXED!

UPDATE:  Actually, it didn't work.  A few prints later the printer started doing the same thing - fading out to nothing.  I ran the print doctor again and it didn't work.  Took the cartridge back and replaced it with another 564 HP Cartridge and IT NOW WORKS!

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Regents Professor
Posts: 8,710
Member Since: ‎11-27-2009
Message 2 of 86 (38,181 Views)

Re: Black Ink Won't Print - HP OfficeJet 4620 - FIXED!



Thanks for the feedback and glad to hear the Doc fixed it





I am an HP employee.
I am speaking for myself and not for HP. Twitter: @Ciara_B_27
Top Student
Posts: 2
Member Since: ‎03-02-2014
Message 3 of 86 (38,148 Views)

Re: Black Ink Won't Print - HP OfficeJet 4620 - FIXED!

UPDATE:  Actually, it didn't work.  A few prints later the printer started doing the same thing - fading out to nothing.  I ran the print doctor again and it didn't work.  Took the cartridge back and replaced it with another 564 HP Cartridge and IT NOW WORKS!

Posts: 31
Member Since: ‎04-29-2014
Message 4 of 86 (38,006 Views)

Re: Black Ink Won't Print - HP OfficeJet 4620 - FIXED!

[ Edited ]

  just in case anyone else encounters this problem, heres whats really going on and heres how to fix this annoying issue. its relatively easy to do and more efficient than wasting money on a new printer or having it repaired  like most people end up doing.


     whats going on? the ink has clogged the printing heads and has solidified shut. the "clean print heads" feature the printer came with does not have the ability to fix this. that feature is to clean up dirty heads, not clogged heads. why hp decided to make this model without a simple to remove cradle is beyond me, but fortunately the cradle DOES come out and can be cleaned with hot water.


     theres a few items you will need to make this happen the easy way or you could just break out the tree limb loppers, like i did, and vent your frustrations.


     what you will need: a pair of needle nosed pliers, a T9 torx screwdriver head ( auto parts stores sell them for a couple bucks), some paper towels and an area to work (its easiest to do this in a corner of a room, on a small table or the floor).  keep in mind you are dealing with ink, so change out of your good clothes just in case and also grab a paper plate or a few sheets of printing paper to set the ink cartridges on as you work.


     1)  ok. lets get started. !!!FIRST UNPLUG THE PRINTER RIGHT NOW, SO YOU DONT ACCIDENTALLY DIE BY ELECTROCUTION!!!  i forgot and when i began unscrewing the first 6 screws, the chime kept going off and im like **bleep**? i was impressed by the safety measures hp took while engineering this model. 


     2) the printer is now unplugged and then go to your corner work area and place the printer so there is a wall or barrier on its left and also a wall or barrier behind it. do this while facing it as if you were about to use it.


     3) now, what you have to do is open the printer like you are going to change the ink and on the right side there is a plastic guide that prevents the top from opening all the way. look on the side and you will notice it could pop off with your fingers. pop it off and open it all the way open so you could get at the screws the lid would have prevented you from accessing.


     4) lean the scanner portion and top portion against the back wall.


     5) all screws you will be removing are size T9H torx screws. there are ten total. there are 2 black screws in the front top and then 4 black screws in the back top. remove them and put them on your paper plate.


     6) next is 1 short silver colored screw located under the control panel, use your finger and feel around  beneath the  *  button. unscrew it, put it on the paper plate.


     7) next you are going to remove the face/control panel to get at the last 3 screws so locate the little illustrations on the top of the printer, there are 2 on the bottom left and 5 on the bottom right (1 and 2 on the left explain paper jam removals and then 1-5 on the right explain changing ink cartridges). then about half an inch south of the number 5 illustration, on the lip, is a plastic bracket. six inches to the left is another one then 6 more inches to the left, under the illustration number 2 (paper jam removal) is a third bracket. undo them using your fingernails. and just flip it up like car hood and then lay it down on the main top portion of the printer, minding the flat wire which is connected into the circuit board of the control panel (if the flat wire popped out because you got too rowdy on it, then simply insert it back in when you reassemble).


     8) next, unscrew the 3 longer silver screws which are located under the panel you just popped off. there is 1 on the left and 2 on the rightish side. toss em on the paper plate.


     9) now that all the screws are removed, take the face panel and partially pop it back together.


     10) then take the whole top ( the part with the little illustrations and lift it like a car hood, ONLY THIS TIME OPEN IT TO THE LEFT and balance it on the edge of the printer, leaning it towards the wall or barrier on your left. BE CAREFUL NOT TO YANK ON THE FRUIT STRIPE COLORED WIRES ON THE LEFT AND ALSO THE BLACK FLAT WIRE THAT CONNECTS THE SCANNING PORTION TO THE MAIN PORTION OF THE PRINTER. 


    11) next grab the needle nose pliers and remove the 2 silver colored tension springs located behind the printer cartridges. pay attention where they were attached so you remember where they go during assembly. take a pic with your phone if you have to or simply re-figure it out like i did. toss em on the paper plate.


    12) then disconnect the 2 large flat wires and 1 small flatwire attached to the back of the ink carriage. take a picture or remember like i did. i imagine bad things may occur if you reverse them on re-assembly. grab the phone and take a quik pic to be sure. 


    13) now remove the ink carriage, cartridges and all, by lifting the front first.  be careful of the little transparent ribbon in there that moves the carriage left to right and vice versa. you dont want to damage that little guy. now take the carriage to your paper plate. dont drip any ink or accidentally get it on your fingers without knowing or you will make a mess.


    14) remove the ink cartridges and set them on the paper plate, ink side up to avoid a mess, these things sometimes drip. set the plate off to the side. its time to clean the print heads.


    15) then go to the sink, with the empty ink carriage and turn the water on hot and then just let the empty ink carriage sit there with the water mainly going through the screen of the clogged color (inspect and make sure there isnt a little rubber gasket surrounding the little screen if there is dont lose it. i didnt look too closely and i dont think hp has them but i know some other printers do). it wont stain the sink but wash down any ink as it comes out to be sure. also notice there is a small circuit board attached to it. dont bang it up but getting it wet doesnt matter.


    16) keep doing this until the water runs clear. 


    17) then use your finger and rub the screen gently with your finger and then rinse it, washing away the ink until the water runs clear. continue this until there is no more ink and the screens are clean. do it to all the colors just for good measures. the problem color that wouldnt print, you will notice takes longer to clean than the other colors.


    18) now look on the bottom side of the carriage. those wierd looking things are the heads. rinse them with hot water and wipe them with paper towels. then flip it over and blast the screen side again. also in between the screenside and the heads (on the side of the carriage) is an opening that is also probably gunked up. blast it with water too. then flip it over and wipe the heads again. repeat this step until nothing wipes away or until you are sick and tired. 


    19) shake off then use paper towels to dry the entire unit. make sure the unit is dry.  especially inside the female plugs. blow in it or break out the hair dryer and gently dry it. dont sit there and melt it though with the blow dryer. but the sooner it dries the less likely your ink cartridges sitting on the paper plate will dry out. the ink wont dry out fast just dont take a nap or go out on a date until you are reassembled with the ink portion.


    20) now you have completed the cleaning of the heads and probably wont need to do this again for the length of time it was since you bought the printer. and just like a roadtrip you used a map to navigate, you will use these instructions in reverse for re-assembly. but keep in mind when re-inserting the 3 flatwires you disconnected from the back of the ink carriage, make sure you have the little metal contact points on the flatwires (male side) inserted so they touch the little metal contact points on the carriage plugs (female side). ALSO BE EXTRA CAREFUL NOT TO DAMAGE THE BLACK FLATWIRE CONNECTING THE SCANNER PORTION TO THE MAIN PRINTER PORTION. THERE IS A LITTLE GROOVE IN THE PLASTIC WHERE IT CAN BE SEATED TO GUARANTEE NO CRIMPAGE. USE IT. also make sure the 2 hinges of the scanner portion/lid are seated properly before fastening the the top with the 6 black screws.


     now re-assemble the printer and reinstall the ink cartridges. and then plug in the unit, and turn it on.  if you get any notifications on the control panel saying the carriage wont move, then open the hood and take out the ink cartridges, push around and make sure the carriage is seated properly and that the tensioner springs are in place properly. repeat if neccesary until notifications go away or just do a test print and disregard the notification if you messed with it already a few times. thats what happened to me and the notification went away on its own. once its online, open the hp utilities and press the "clean the heads" button. do it 2x in a row and you will be back in style, with extremely rich and bold colors and yes, raven black print.



     you can always take your aggressions out with the tree limb loppers or the tin snips like i did and snip out the center plastic that prevents you from taking the carriage directly out. this eliminates disassembly and re-assembly entirely. just make sure you DO NOT CUT THE TRANSPARENT RIBBON THAT MOVES THE CARRIAGE BACK AND FORTH. this way the next time it happens it only takes you 10 minutes before you are up and printing. 


enjoy!  -  Porf

Posts: 8
Member Since: ‎05-06-2014
Message 5 of 86 (37,647 Views)

Re: Black Ink Won't Print - HP OfficeJet 4620 - FIXED!

I have had this problem on and off now for more than 6 months. I too, thought "Eureka" the first time the cleaning of the print heads solved my problem. 


I think I could have purchased a new printer by now with all the wasted ink. 


I know that I have most spent a ridiculous amount of TIME on this thing that should have been better spent elsewhere. And while I thank you for your thoughtful description of how to take it apart, there is no way I am going to attempt that -- way too likley that I would simply end up wth a bunch of broken parts.


HP should be ashamed of itself for making such sub-standard products.


And equally ashamed as these units (and many more models like them) are likely ending up "trashed" as consumers simply purchase another printer because they can't go without a working printer.





Posts: 31
Member Since: ‎04-29-2014
Message 6 of 86 (37,641 Views)

Re: Black Ink Won't Print - HP OfficeJet 4620 - FIXED!



i totally agree with you.


i have seen you with this issue many times here in this forum on this subject. although it is relatively easy to do, i will admit MANY people struggle during this repair.


i would recommend enlisting a friend who is able to do these repairs for you. if that is not an option, and i dont normally do this, i would offer to do the repair for you for free  if you pay for the shipping to and return shipping to and from  bloomington illinois.


you will have to put it in a box with a tight fit after using some styrofoam for shipping padding to ensure no damage occurs during the shipping process. problem with that is it may exceed the cost of just simply replacing the unit. anyways you make that determination and if i hear back from you, we will go from there. or if you could get the ink printing carriage out u could just send that in a ziplocked bag. problem with that is you must do the dissasembly and reassembly, whichj is the hardest part.


either way let me know in this forum if you check the shipping prices and it is acceptable.


have a nice day, 


HP Support Agent
Posts: 17,313
Member Since: ‎09-02-2013
Message 7 of 86 (36,844 Views)

Re: Black Ink Won't Print - HP OfficeJet 4620 - FIXED!

Hi @federalhillmary 


I have seen your previous posts and now your newest. I imagine this has been a frustrating experience for you and I would like to help. I urge you to call phone support, regardless of your warranty status. I cam confident they will be able to help you and turn around the less than satisfactory experience you have had thus far. Please let me know the outcome of your call after speaking with somebody at HP.


If you have any difficulty with phone support, you can private message me your case number, telephone number, country and full name so that I can look up the case history and follow up with you as necessary.


I request this information via private message as I do not want you posting it publicly. I am confident you will not have any difficulty, but want you to know that if you do I will be here to help.


How To Send A Private Message


I look forward to hearing from you.

I work on behalf of HP

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Honor Student
Posts: 1
Member Since: ‎10-20-2014
Message 8 of 86 (36,242 Views)

Re: Black Ink Won't Print - HP OfficeJet 4620 - FIXED!

Sunshyn2005 you made my day! Thank you for suggesting we call HP Support, I have never had a better support experience. HP is sending me a free replacement printer even though my printer has been out of warranty for over a year. I was dreading the hassle of wrangling with a surly support person, what I got instead was an accomodating tech who walked me through several diagnositcs and then got his supervisor on the line to make arrangements to swap out my printer. Way to go HP Support!!

Top Student
Posts: 4
Member Since: ‎10-25-2014
Message 9 of 86 (36,131 Views)

Re: Black Ink Won't Print - HP OfficeJet 4620 - FIXED!

[ Edited ]

Have the same problem with my Officejet 4620, at 16 months old, with light domestic use  

Tried the HP Support website, and got as far as selecting "My Printer Does Not Have A Removable Printhead", and couldn't get any further.

Basically, this is a budget $120 printer, and when it "wears out", it's not cost effective to repair, and they expect you to toss it and get another.  I'm disappointed because I deliberately bought a HP product thinking this would happen with less reputable manufacturers.

I called HP Support, and rather getting a free replacement as you have, I was offered a returned/serviced 6700 at a "discounted" price of $126.  Great, I can get one of those at Office Depot for $109!

Shame on you HP.  I've just ordered a T9 torx bit, and will attempt the repair above.

HP Support Agent
Posts: 17,313
Member Since: ‎09-02-2013
Message 10 of 86 (36,032 Views)

Re: Black Ink Won't Print - HP OfficeJet 4620 - FIXED!

Hi @Edge2112 


I am going to send you a private message, please check the little envelope on the top right hand corner of the forums page to check your Forums inbox.


Forums Inbox.jpg

I work on behalf of HP

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