HP 56 ink cartridges funny problems

[dashisiong]

Hi,

I got 2 units of HP 56 black from "A" shop and put in my HP fax 4255. Both cannot work...very unhappy about this and when out to buy from "B" shop.
I return to office and try the "B" shop ink cartridge....it detected and running fine!
So i have no choice and go back to "A" shop and ask for replacment or refund. The owner put my 2 cartridge in his HP 5550 printer and it is running fine!!!

So what is the problem actually?
Cartridge problem or printer problem???
What should i do with my 2 cartridges now?

Pls someone give me some advise or solution!!!

Thanks

 

[ghwellsjr]

First, realize that problems like these are sometimes intermittent so try the "A" cartridges again in your fax. If they still don't work, you need to find another fax like yours and take your fax to it and try the cartridges from shop "A" in both of them to determine if the problem is your fax or the shop "A" cartridges. Once you know the answer to that question, you should go back to shop "A" with your fax and all the cartridges and show them what you have learned and see if they will give you a refund.

BTW, are the cartridges from shop "A" and "B" different brands?