Blown chips on 221 carts.

[pearlhouse]

I refill these carts for myself and 3 other friends. I reset all these carts. before I refill them. Recently one person has returned to me the magenta cartridge only, to say that her printer will not recognize it and then she gets the alarm. She has a MX870 printer. When I checked the cart in my printer which is a MX860 it too would not recognize this cart. So I tried to reset the chip again. The resetter indicated with the red light for over 5 sec. that the chip had been reset. My printer still will not recognize this cart. Today this lady brought me two more magenta carts that she said were rejected by her printer. (I gave her two more that I had refilled and reset.) I tried the returned ones, in my printer and sure enough they were rejected. One of these after I reset it again now is working in my printer. Im kinda convinced something is going on with this ladies printer. I dont think its the cartridges fault. So now Im looking for a reason that is causing this. By the way the resetter shows that this second one has been reset but is still rejected by my printer. Late this afternoon she called me to say the first one she put in is working AOK. The only thing I can think of that might cause this is that she is putting this magenta cart into the wrong slot and pulling it out and putting it in the correct slot. Could this be causing a chip failure? But doing this with 3 different carts. does not seem likely. Im thinking of going over there and pulling the print head and try and examine the contacts and maybe give them a good cleaning. I will say she has done a lot of printing with this printer over the last 2 years so maybe the printhead is worn out or ??????????
So has anyone ever had a similar problem.??

 

[The Hat]

Over the past twelve months or so I too have had three individual OEM chips
fail on several cartridges used on my different printers.

I got the cartridge cant be recognized message, removed and reset it successfully and it still didnt work
(did that twice) even tried it in another printer same result, so I dumped it.

I replaced one of the bad chips with an OEM chip and the other two with ARC chips (temporarily)
I am still waiting to get suitable OEM s for these two,
so as good as OEM chips are they can go bust after one or repeated use.

Saying that I got about 60 OEM cartridges on the go at any one time some in the printers
and the rest shelf stored so three failures is not a huge amount at all
when considering just how many time these chips have been reset already ..

 

[pearlhouse]

Yeah but the strange thing here is that they are all magenta chips that have gone bad.. To this means there is something else going on here.

 

[The Hat]

Yeah but the strange thing here is that they are all magenta chips that have gone bad.. To this means there is something else going on here.

Mine were all different chips and none were magenta..

 

[websnail]

Just a thought but some resetters are known to blow chips although the information I have is that they tended to blow chips like the 526 (or 226) grey rather than the standard units. So it could equally be your resetter that's causing problems...

 

[pearlhouse]

Maybe Im not being clear here. I have other magenta carts that have been reset and Im using them in my printer with no problems. So I dont think it is my resetter that is the problem. Again it seems peculiar that its ownly been the magenta chips that have blown. Im thinking the printer is the problem (maybe the print head). Seeing as each chip is set up for its own specific color, is it possible if the cart is installed in the wrong slot that this would blow the chip?? Im not sure what makes these chips "specific" for one color only. But if it is installed in the wrong spot and does not match up electronicaly with the head would this cause the chip to burn out or go bad???

 

[mikling]

The printhead is independent of the chip. Both the printhead and chip connect to the logic board internally. The printhead does not control the chips,

 

[pearlhouse]

So is it possible that the chip would send a bad signal because it is in the wrong slot and this signal makes it all the way to the logic board and the board trys to use it and when it cannot it sends back a signal that blows the chip.?? Im just at a loss here as to why only the magenta cartridge chips are the ones that are blown.

 

[The Hat]

So is it possible that the chip would send a bad signal because it is in the wrong slot and this signal makes it all the way to the logic board and the board trys to use it and when it cannot it sends back a signal that blows the chip.?? Im just at a loss here as to why only the magenta cartridge chips are the ones that are blown.

The chip doesnt send any signal at all to the logic board; its the other way round.

The data on the chip must match that of the logic board and if it doesnt then the chip is just rejected
and the logic board cant zap the chip either, as it can only send and receive data.

These chips are made to be used one time only so if they last for two to twenty uses then thats a bonus,
its something I am sure that Canon Inc. are very much aware of and are working on it.

As I said in thread #4 none of mine where magenta coded and maybe websnails suggestion that the resetter
is probably to blame or you may have some sort of the new generation non resettable OEM magenta chips.

Theres one way to solve your problem and that is to get a hold of compatible third party
magenta cartridges (new/used) and swap their chips for that of the OEM ones..

 

[pearlhouse]

Thanx for everybodys answers to this problem.
I will say that the chips are Canon OEM probably about 1-2 years old. So I think that would make them resetable.
I will have to go along with the possibility that the resetter is the problem. I will admit I have a hard time sometimes trying to get the resetter to work. Sometimes I have to press very hard on the cartrige to the point where Im worrying that I might squeeze some remaining ink out of the cart. Other times I have to remove the cart and reposition it to get the light to light up. One of the carts that was rejected was able to be resett and I am now using it successfully. The other that was rejected cannot be resett. So for now Im just going to forget about it and see what happens on the next round of refills that I give to my friend.
THANX AGAIN!!