My hp deskjet 450 having a power problem

1) Choose start. Select the printer. If the printer is not found in the list, turn it off and on and then click Retry.

2) If a screen displays prompting to make the printer the default printer, Click Yes and continue.

3) Turn the printer off, wait about 10 seconds and disconnect the printer power cord from the printer.

4) Turn off the computer or device that we try to print from. Connect the printer power cord to the printer, and turn on the printer, if it automatically powers on.

5) Reconnect the power cord to the rear of the printer and set the default printer.

I would take it apart and look for burnt spots on the circuit board and for blown capacitors. If it has a fuse, and it is blown, make sure you replace it with one of the same rating. DO NOT BYPASS IT! Also, make sure it's unplugged and wear a static grounding bracelet. Good luck

i just answered this

Just Plug in the Power Supply on the Printer and let me know if the Power adapter is warm after a while.

I am unfamiliar with the hp f4500. Assuming it is actually the HP Deskjet F4500 you can download all manuals that should help you with setup here.

dj 450; psc 2170 and others; most of the psc 1200 to 1400.

Here is the HP site to choose your Operating system. It will then take you to the page to download the correct driver.

HP DJ450 OS Selection

If you have any trouble, Comment back.

Thanks for using Fixya.

Hi,

1. You can visit the link http://tinyurl.com/5uyv92.
   select the Operating system using and click on it.
2. It will open up with select driver for your printer and follow the instruction to download and install.

HP Deskjet 450 and HP Color Inkjet cp1160 and cp1700 Series Printers - How to Print with Black Ink Only Follow the instructions below to print with black ink only.
NOTE: HP Deskjet printers use all the primary colors, Cyan, Magenta, and Yellow, to create shades of gray when Print in Grayscale is selected in the printer driver and the Black only option is not available or not selected.

1. Click Start , Settings , and then Printers . In Microsoft® Windows XP, click Start and then Printers and Faxes .
2. Right-click the printer icon and in Windows 95/98/Me, select Properties . In Windows NT 4.0, select Document Defaults . In Windows 2000/XP, select Printing Preferences .
3. Select the Color tab.
4. Select Print in Grayscale .
5. Select Black only .
   NOTE: If the Black only option is not available, download the latest printer driver from the HP Web site. Click here to go to the HP Support and Drivers page.
6. Click OK to save the changes and close the window.
7. Print the desired document or graphic.

The OKI 5200 is a 'GDI' or Windows only printer and does not support PCL or PostScript languages.
Most if not all of the printers listed support either PCL or PS or an inkjet based language.
I'm afraid you will not be able to print the the 5200 without it's driver loaded on the PDA.
If the 5200 supported PCL you would be able to choose any of the
Color HP Deskjets.