Has been losing black until now seems none

Loose contact [solder joint/s] at the circuit board. Contact any service technician.

Is you problem related to the fault to your TV?

Hi and welcome to fixya
You can print black pages with the color cartage. HOW ? just when you select the size of the paper A4 then ther is an option of colored printing or black if you have ink in the color cartage then it can be done that you can print black pages with that cartage
thanks hope that will be helpful

replace colour catriage.

What kind of printer do you have? Most come with a maintance pull down. If you have that in your software pkg,then try cleaning the heads etc. It will give you a few ideas to keep the printer clean. You may want to align the heads as well.
Lorenz

YOU SHOULD USE HP 21 BLACK INK CARTRIDGE FOR BLACK PRINTING.IF YOU USE 22 COLOUR CARTRIDGE YOU WILL GET ONLY GREAY PRINTING ONLY.I AM RIGHT?IF YOU USE COLOUR CARTRIDGES MAY YOU WILL GET MONEY LOSE. BECOS IT WILL FINISH EARLY.BLACK INK COST IS LESSTHAN COLOUR INK CARTRIDGES. SO YOU SHOULD BUY BLACK CARTRIDGE FOR REAL BLACK PRINTING.

I think there is a problem with your tv's picture tube.Its best that you change the picture tube or repair it.

1. perhaps LCD is faulty
2. Software reload may also solve the problem if LCD is OK.

this is not a printer problem, you have a problem with colour cartridge! u can fix this in 2 diferent way: 1. replace the colour cartridge with new one, or gently clean the nozzle cartridge with a wet tissue until the cyan colour mark a line on the tissue just like the others colours: yellow and magenta. maybe must repeat this several times.

unplug machine from power. remove all carts. close cover. reconnect machine to power. wait until machine demands carts. reinsert cart as demanded by machine and secure them by pressing them into position and fixing the clip above the cart cover. give correct answer as display asks. Set date and time again.

btw: always print until printer stopps printing! Never change cart befor that
because printer logic will be fooled ;-)