Question about HP DeskJet 9800 InkJet Printer

2 Answers

HP inkjet does not turn on. On the back, the tiny power supply unit light comes on, indicating the cord 110 AC supply is OK

Posted by on

  • dasm1 Sep 02, 2010

    Thanks so much caroldon !
    One of my problems is that the power supply board has one holding screw and is pivoting but wont come off. I wonder if there is a latch of some sort.


  • dasm1 Sep 02, 2010

    I took it off. It has proper DC out put. Now it is beyond my limited capacity. Thanks !



2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 731 Answers


Please CLICK HERE and follow the trouble shooting steps listed to fix the problem.


Posted on Sep 03, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • HP Master
  • 17,130 Answers

You will need to remove the power supply unit to check the output to the printer board. If there is power coming to the mother board then the power supply is ok and the printer board is faulty. If there is power shorting on connection to the board then also the printer board is faulty. If there is no DC output at the secondary of the power supply unit ( SPMS) then check if any fuse/fusible resistor in the secondary section is open. Use a meter to check and change.
However if the fault centers on the mother board, then the printer main board must be replaced.
evaluate cost and decide.

Posted on Sep 02, 2010

  • Donald DCruz
    Donald DCruz Sep 02, 2010

    just hold up and lift, look if there is hook on one sie orr a latch at the back side.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Hp computer tower will not go on

Would that be an LED (Light Emitting Diode), blinking on the back of the Power Supply?

If so, instead of being an LED that indicates the Power Supply has power to it, it has now turned into a diagnostic LED (Light), and is telling you the Power Supply is bad.

Do you have an economical multimeter, so I can guide you in testing the 3 low DC Voltages; that come out of the Power Supply?
An economical multimeter can be purchased for as little as $5 to $12.
I have seen them on checkout aisle racks, in major discount stores.

The dangerous high AC voltage, is kept contained within the metal case of the Power Supply.
(100 to 240 Volts depending on what country you are in)

The Power Supply is a Converter.
It converts the high AC voltage into 3 low DC Voltages;
3.3 Volts, 5 Volts, and 12 Volts.
In comparison two D cell flashlight batteries produce 3 Volts DC.

Use a KNOWN to be good, Compatible power supply; for a temporary test unit.

{"Honey, I'm going to borrow the Power Supply out of your computer.
I'll put it back when I'm done."
"What? I'll be sleeping on the couch? K"} (Lol!)

Also, is the inside of the computer dirty?
(Computer Unplugged from power, Anti-Static Procedures FOLLOWED)

Let's start here......

Also, what is the Product Number?
Back of computer tower, white Service Tag.
P/N = Product Number

Post back in a Comment.

Apr 09, 2013 | HP Pavilion Computers & Internet

1 Answer

X9575 won't power on

Check with Lexmark to see if there is a reset button for unit

Aug 22, 2017 | Lexmark X9575 InkJet Printer

1 Answer

All the lights on the buttons flashing with error message

Please perform the following steps:

* Take the cartridges out of the unit. Dis connect the unit from the computer.
* Unplug the power cord from the back of the unit.
* Press OK and Cancel buttons together while connecting the power cord back to the unit.
* Now turn on the unit and verify the result.

:) Dr Tony

May 12, 2010 | HP Officejet 5610 All-In-One InkJet...

1 Answer

My Lexmark X9350 All-in-One doesn't turn on.

Actually, the printer's power cord should be plugged in to a power source having 110-220V output. The power supply (the black box behind the printer where the power cord is attached) converts that power to 30V. Basically, if your wall outlet has power output of 110-220V, you won't need a transformer to convert that to 30V. That's the job of the printer's power supply. Hope this helps. If you need more clarification, place a comment so I can get back to it. Thanks.

Apr 16, 2010 | Lexmark X9350 All-In-One InkJet Printer

1 Answer


Ok, if there are NO light, then the Poser Supply, may be faulty, or disconnected. Please Check, Wall Unit?, Plugged in? Turned On? at printer too. Try another cord, socket, if all these still do not get power restored, then you have a problem with the printer, most likely the PS, if it is an external supply, you need to check, that has Voltage coming out. OR replace it with a known good one and check, if it still doesn't work, with a know good PSA, then the printer is faulty.

Apr 14, 2010 | HP PSC 1315 All-In-One InkJet Printer

1 Answer

Unit does not come on at all, have check power supply and cord are both ok. trouble is in unit

If it is not powering on , then obviously there is something wrong with the pritner, you can upgrade it to latest printer from HP online chat support

Apr 05, 2010 | HP Officejet 5610 All-In-One InkJet...

3 Answers

Pc will not come on no power , have checked power outlet, as well as power cable, to no avail ...........still will not come on

Have you checked the toggle switch on the back of the power supply? Make sure it is turned to the correct voltage (110 in the US). Still no power? Check the connection on the motherboard. Make sure the power supply lead from the front panel switch to the motherboard is connected. Then check all power connections to the motherboard. Secure or correct as needed. (follow the motherboard manual's diagram as to where each lead should go)

Jan 01, 2010 | E-Machines eMachines Desktop PC

1 Answer

HP Deskjet 9800 will not power up. Tried replacing power cord and tried plugging into a different power outlet. The little green light on the back of the power supply unit comes on, but the printer will...

Is there power coming out from the supply end
Is is a DC or and AC output supply?
If is it an AC output supply tyhebm in the back of the HP had an AC to DC converted that is realy a diode bridge and should contain a fuse in the circuit somewhere on that board

Jul 27, 2009 | HP DeskJet 9800 InkJet Printer

2 Answers

HP C6180 all in one

Have an HP C6180 that would not turn on, no power. Unplugged and replugged the unit in the back - no fix. Unplugged the unit at the wall socket, reconnected and I thought I heard a faint click in the power supply. Hit the on button and the C6180 powered up - no issues. Without knowing for sure, possibly the power supply has some type of surge arrest safety switch.

Aug 09, 2008 | HP Photosmart C6180 All-In-One InkJet...

Not finding what you are looking for?
HP DeskJet 9800 InkJet Printer Logo

Related Topics:

107 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Office Equipment & Supplies Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 3 Expert

1089 Answers


Level 3 Expert

102366 Answers

Are you a HP Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides