The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink but is not stocked in stores. Any store stock is almost certainly "high risk" dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out) unless it was cheap and the use by date is within reason.[br]
+
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink, but it is not stocked in stores. Any store stock is almost certainly "high risk" dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out) unless it was cheap and the use by date is within reason.[br]
***You're better off with third-party ink that has been checked and vetted on these. If you have trouble finding the OEM inks, the 3rd party inks are usually more plentiful (albeit usually not sold in stores and usually only available online). This is in contrast with NOS toner, which is usually fine.***
[quote|format=featured]
***You need to be wary of super old NOS toner too (like NOS LJII/III/4 toner). They are mostly dead stock because of component wear and toner leakage (and 90s NOS toners in general). As long as NOS toner is within a reasonable manufacturing time, you have a better chance of getting a good NOS toner than NOS OEM ink.***
[/quote]
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't prone to being no good just because it's old stock short of buying from HP online.
-
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart, which is part of gaining access to the print mech if you find this is damaged.
+
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and electrical shorting. It takes longer to occur on old models with better mechs, but newer ones tend to fail reliably within ~3-4 years.
+
+
+
+
[quote|format=featured]
+
***Authors' Note: The newer printers with the printhead in cartridge design (starting with HP 6X series carts) are more prone to failure due to this, to the point that it has become a HORRIBLY common failure for these printers. If the strip has wear or charring, the printer is toast, especially with a corresponding cartridge burn mark. Good luck fixing it :(.***
+
+
***PS: You will probably find the donor is being discarded for the same failure. Nobody fixes this, NOBODY.***
+
+
[/quote]
+
[guide|32695|Use this guide|new_window=true] to get the printer apart, which is part of gaining access to the print mech if you find this is damaged.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink but is not stocked in stores. Any store stock is almost certainly "high risk" dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out) unless it was cheap and the use by date is within reason.[br]
***You're better off with third-party ink that has been checked and vetted on these. If you have trouble finding the OEM inks, the 3rd party inks are usually more plentiful (albeit usually not sold in stores and usually only available online). This is in contrast with NOS toner, which is usually fine.***
[quote|format=featured]
***You need to be wary of super old NOS toner too (like NOS LJII/III/4 toner). They are mostly dead stock because of component wear and toner leakage (and 90s NOS toners in general). As long as NOS toner is within a reasonable manufacturing time, you have a better chance of getting a good NOS toner than NOS OEM ink.***
[/quote]
-
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't prone to being no good just because it's old stock.
+
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't prone to being no good just because it's old stock short of buying from HP online.
-
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart, which is part of the way to gain access to the print mech if you find this is damaged.
+
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart, which is part of gaining access to the print mech if you find this is damaged.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink but is not stocked in stores. Any store stock is almost certainly "high risk" dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out) unless it was cheap and the use by date is within reason.[br]
-
***You're better off with third-party ink that has been checked and vetted on these. If you have trouble finding the ink easily, it's more available than OEM ink but hard to come by today. This is in contrast with NOS toner, which is usually fine.***
+
***You're better off with third-party ink that has been checked and vetted on these. If you have trouble finding the OEM inks, the 3rd party inks are usually more plentiful (albeit usually not sold in stores and usually only available online). This is in contrast with NOS toner, which is usually fine.***
[quote|format=featured]
***You need to be wary of super old NOS toner too (like NOS LJII/III/4 toner). They are mostly dead stock because of component wear and toner leakage (and 90s NOS toners in general). As long as NOS toner is within a reasonable manufacturing time, you have a better chance of getting a good NOS toner than NOS OEM ink.***
[/quote]
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't prone to being no good just because it's old stock.
-
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart part of the way to gain access to the print mech if you find this is damaged.
+
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart, which is part of the way to gain access to the print mech if you find this is damaged.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink but is not stocked in stores. Any store stock is almost certainly "high risk" dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out) unless it was cheap and the use by date is within reason.[br]
***You're better off with third-party ink that has been checked and vetted on these. If you have trouble finding the ink easily, it's more available than OEM ink but hard to come by today. This is in contrast with NOS toner, which is usually fine.***
[quote|format=featured]
***You need to be wary of super old NOS toner too (like NOS LJII/III/4 toner). They are mostly dead stock because of component wear and toner leakage (and 90s NOS toners in general). As long as NOS toner is within a reasonable manufacturing time, you have a better chance of getting a good NOS toner than NOS OEM ink.***
[/quote]
-
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers.
+
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't prone to being no good just because it's old stock.
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart part of the way to gain access to the print mech if you find this is damaged.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink, but it is not stocked in stores. Any store stock is dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
+
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink but is not stocked in stores. Any store stock is almost certainly "high risk" dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out) unless it was cheap and the use by date is within reason.[br]
***You're better off with third-party ink that has been checked and vetted on these. If you have trouble finding the ink easily, it's more available than OEM ink but hard to come by today. This is in contrast with NOS toner, which is usually fine.***
[quote|format=featured]
***You need to be wary of super old NOS toner too (like NOS LJII/III/4 toner). They are mostly dead stock because of component wear and toner leakage (and 90s NOS toners in general). As long as NOS toner is within a reasonable manufacturing time, you have a better chance of getting a good NOS toner than NOS OEM ink.***
[/quote]
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers.
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart part of the way to gain access to the print mech if you find this is damaged.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink, but it is not stocked in stores. Any store stock is dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
***You're better off with third-party ink that has been checked and vetted on these. If you have trouble finding the ink easily, it's more available than OEM ink but hard to come by today. This is in contrast with NOS toner, which is usually fine.***
[quote|format=featured]
-
***You need to be wary of super old NOS toner too (like NOS LJII/III toner). They are mostly dead stock because of component wear and toner leakage (and 90s NOS toners in general). As long as NOS toner is within a reasonable manufacturing time, you have a better chance of getting a good NOS toner than NOS OEM ink.***
+
***You need to be wary of super old NOS toner too (like NOS LJII/III/4 toner). They are mostly dead stock because of component wear and toner leakage (and 90s NOS toners in general). As long as NOS toner is within a reasonable manufacturing time, you have a better chance of getting a good NOS toner than NOS OEM ink.***
[/quote]
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers.
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart part of the way to gain access to the print mech if you find this is damaged.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink, but it is not stocked in stores. Any store stock is dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
-
***You're better off with third-party ink that has been checked and vetted on these now. If you have trouble finding the ink easily, it's more available than OEM ink, but hard to come by today. This is in contrast with NOS toner, which is usually fine, but you need to be wary of super old NOS, too, like NOS LJII/III toner; it's dead stock most of the time, too, because of component wear and toner leakage (and 90's NOS toner in general). As long as NOS toner is within a reasonable manufacturing time, you have a better chance of getting a good NOS toner then NOS OEM ink.***
+
***You're better off with third-party ink that has been checked and vetted on these. If you have trouble finding the ink easily, it's more available than OEM ink but hard to come by today. This is in contrast with NOS toner, which is usually fine.***
+
[quote|format=featured]
+
***You need to be wary of super old NOS toner too (like NOS LJII/III toner). They are mostly dead stock because of component wear and toner leakage (and 90s NOS toners in general). As long as NOS toner is within a reasonable manufacturing time, you have a better chance of getting a good NOS toner than NOS OEM ink.***
+
+
[/quote]
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers.
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart part of the way to gain access to the print mech if you find this is damaged.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink, but it is not stocked in stores. Any store stock is dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
-
***You're better off with 3rd party ink that has been checked and vetted on these now if you have trouble finding the ink easily, it's more available then OEM. The ink is hard to come by as "OEM", but still available.***
+
***You're better off with third-party ink that has been checked and vetted on these now. If you have trouble finding the ink easily, it's more available than OEM ink, but hard to come by today. This is in contrast with NOS toner, which is usually fine, but you need to be wary of super old NOS, too, like NOS LJII/III toner; it's dead stock most of the time, too, because of component wear and toner leakage (and 90's NOS toner in general). As long as NOS toner is within a reasonable manufacturing time, you have a better chance of getting a good NOS toner then NOS OEM ink.***
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers.
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart part of the way to gain access to the print mech if you find this is damaged.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP NO LONGER SELLS NEW OEM 21/22 ink as it was discontinued some time ago,so the OEM ink left is all old dead stock. This old dead stock isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
-
***You're better off with 3rd party ink that has been checked and vetted on these now!***
+
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP still sells OEM 21/22 ink, but it is not stocked in stores. Any store stock is dead stock that isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
+
***You're better off with 3rd party ink that has been checked and vetted on these now if you have trouble finding the ink easily, it's more available then OEM. The ink is hard to come by as "OEM", but still available.***
-
If you have cleaned the contacts on both sides (you can use a disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers :/.
+
If you have cleaned the contacts on both sides (you can use disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers.
-
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [https://www.ifixit.com/Guide/HP+Officejet+J3680+Automatic+Document+Feeder+Scanner+Glass+Replacement/32695|Use this guide|new_window=true] to get the printer apart part of the way to gain access to the print mech if you find this is damaged.
+
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [guide|32695|Use this guide|new_window=true] to get the printer apart part of the way to gain access to the print mech if you find this is damaged.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP NO LONGER SELLS NEW OEM 21/22 ink as it was discontinued some time ago, so the OEM ink left is all old dead stock. This old dead stock isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
***You're better off with 3rd party ink that has been checked and vetted on these now!***
If you have cleaned the contacts on both sides (you can use a disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers :/.
-
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened.
+
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened. [https://www.ifixit.com/Guide/HP+Officejet+J3680+Automatic+Document+Feeder+Scanner+Glass+Replacement/32695|Use this guide|new_window=true] to get the printer apart part of the way to gain access to the print mech if you find this is damaged.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. HP NO LONGER SELLS OEM 21/22 ink as it was discontinued some time ago, so the OEM ink left is all old dead stock, and it isn't getting any younger. I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
+
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. ***HP NO LONGER SELLS NEW OEM 21/22 ink as it was discontinued some time ago, so the OEM ink left is all old dead stock. This old dead stock isn't getting any younger.*** I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
***You're better off with 3rd party ink that has been checked and vetted on these now!***
If you have cleaned the contacts on both sides (you can use a disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers :/.
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. HP NO LONGER SELLS OEM 21/22 ink as it was discontinued some time ago, so the OEM ink left is all old dead stock, and it isn't getting any younger. I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
***You're better off with 3rd party ink that has been checked and vetted on these now!***
-
If you have cleaned the contacts on both sides (you can use a disposable eyeglass wipe for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers :/.
+
If you have cleaned the contacts on both sides (you can use a disposable eyeglass wipes for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers :/.
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. HP NO LONGER SELLS OEM 21/22 ink as it was discontinued some time ago, so the OEM ink left is all old dead stock, and it isn't getting any younger. I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
***You're better off with 3rd party ink that has been checked and vetted on these now!***
If you have cleaned the contacts on both sides (you can use a disposable eyeglass wipe for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers :/.
-
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years.
+
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear on the contact side as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years. If there are any burn marks or wear marks, it's already happened.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. HP NO LONGER SELLS OEM 21/22 ink as it was discontinued some time ago, so the OEM ink left is all old dead stock, and it isn't getting any younger. I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
***You're better off with 3rd party ink that has been checked and vetted on these now!***
If you have cleaned the contacts on both sides (you can use a disposable eyeglass wipe for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers :/.
+
+
If that doesn't fix it, see if you can find a print mech from a junk unit. These all-in-one cart designs are prone to electrical wear as they age due to poor contact and shorting. It takes longer to occur on old models, but the newer ones tend to go out in 3 to 4 years.
The printhead is on the cartridge with this series, so if the head is bad, the whole cartridge is bad. HP NO LONGER SELLS OEM 21/22 ink as it was discontinued some time ago, so the OEM ink left is all old dead stock, and it isn't getting any younger. I would not put much faith (if any) in NOS OEM inkjet carts like this because they tend to be shot if they aren't stored right (note: If it came with a unit, sure, but I won't seek them out).[br]
***You're better off with 3rd party ink that has been checked and vetted on these now!***
If you have cleaned the contacts on both sides (you can use a disposable eyeglass wipe for this) and it continues having issues, look into aftermarket ink from a good vendor; it's your only shot at getting ink that isn't rotten from age now for these printers :/.