HP Photosmart 8450 Can I get parts for

SOURCE: HP Photosmart 8450 Ink Level Indicator

replace the ink cartridges

SOURCE: printer cartridge cradle is stuck-hp photosmart 7350

I just had the same problem...and this is what I did to get it working...

Turn off your printer. Open the top. Push the cartridge thingie off to the side (if possible) and then take QTips and cleaned the silver bar the cartridge moves on. Got a lot of ink off of it.
Should run after that.

SOURCE: How do I install ink cartridge for hp photosmart C4280

To replace the print cartridges
1. Make sure the HP All-in-One is on.
CAUTION: If the HP All-in-One is off when you open the print cartridge door to
access the print cartridges, the HP All-in-One will not release the cartridges for
changing. You might damage the HP All-in-One if the print cartridges are not
docked safely when you try to remove them.

2. Make sure you have letter or A4 unused plain white paper loaded in the input tray.

3. Open the print cartridge door.
The print carriage moves to the far right side of the HP All-in-One.

4. Wait until the print carriage is idle and silent, and then lightly press down on a print
cartridge to release it.
If you are replacing the tri-color print cartridge, remove the print cartridge from the
slot on the left.
If you are replacing the black or photo print cartridge, remove the print cartridge from
the slot on the right.
1 Print cartridge slot for the tri-color print cartridge
2 Print cartridge slot for the black and photo print cartridges
5. Pull the print cartridge toward you out of its slot.
6. If you are removing the black print cartridge in order to install the photo print cartridge,store the black print cartridge in the print cartridge protector or an airtight plastic container.

7. Remove the new print cartridge from its packaging and, being careful to touch only
the black plastic, gently remove the plastic tape by using the pink pull tab.
1 Copper-colored contacts
2 Plastic tape with pink pull tab (must be removed before installing)
3 Ink nozzles under tape

CAUTION: Do not touch the copper-colored contacts or ink nozzles. Touching
these parts can result in clogs, ink failure, and bad electrical connections.

8. Slide the new print cartridge forward into the empty slot. Then gently push the upper
part of the print cartridge forward until it clicks into the socket.
If you are installing the tri-color print cartridge, slide it into the left slot.
If you are installing a black or photo print cartridge, slide it into the right slot.
Work with print cartridges 69
Maintain the HP All-in-One

9. Close the print cartridge door.
If you installed a new print cartridge, the HP All-in-One prints a print cartridge
alignment page.
10. When prompted, ensure plain white paper is loaded in the input tray, then press the

button next to OK.
NOTE: If you have colored paper loaded in the input tray when you align the print
cartridges, the alignment will fail. Load unused plain white paper into the input
tray, and then try the alignment again.

11. Place the page print side down on the scanner glass and then press the button next
to OK to scan the page.
When the On
Please Don't forget to rate this solution. Thanks.

SOURCE: i have a hp c6280

I had this same problem with my c6280.
I got fed up (HP only added frustration) and decided to trash it and buy something new.
So I figured I would take it apart and see if it was something obvious, worst thing that could happen was that the printer would not work - allready there.
Here is what I found.
Taking the covers off of this printer is not easy, but after removing all accessable screws I was able to get the covers off.
I found the pump motor on the left side of the printer (it is labled).
The pump motor has a large (approx 2 in) gear on it that is drivin by a belt with teeth.
The other end of the belt is drivin by a small (approx 3/8 in) gear.
There are two belt tensioners on each side of the belt.
PROBLEM; The belt was not riding on one of the tensioners.
This causes the belt to intermitenly engage the gears (stalled pump motor).
I put the belt back on the tensioner, put the covers back on (a real pain).
Printer now works fine.
I think that this may have been a problem out of the box because the lound clicking noise that came with the printer has also gone away.

SOURCE: HP photosmart C4480 printer cartridge incompatible error BEWARE SPAM NUMBER BELOW 1-800-532-4187

Well....I solved the problem......bought a new Canon printer!!

I tried everything...unplugging, cleaning everything that was mentioned above. I was onto HP online support several time, but they were absolutely no help at all...they basically told me that the cartridge must be damaged or ink dried up and to buy a new cartridge to see if the error persisted.....I don't think so!!!
I will never by HP again after having issues with the last two I have had. I love my new Canon printer it is EVERYTHING that HP wasnt.