How to Replace a Burned Printhead FFC Cable on Epson Workforce Printers (WF-7210, WF-7710, WF-7720 and More)

Question:

I've found a short on the left side of the FFC (Flat Flexible Cable) strip for the printhead, and it appears that two pins are burned. I assume I need to replace the white strip that connects from the printhead to the other side of the printer. Do suppliers sell these new strips? Also, how do I remove and reinstall the FFC on the opposite side of the printer? It’s hard to access that area—any advice?

Answer:

Identifying and Replacing the Damaged FFC Cable

The flat white strip you’re referring to is the Printhead FFC (Flat Flexible Cable), which transmits electrical signals between the mainboard and the printhead. If you've identified burned pins or a short, then yes—replacement is essential. Continuing to run the printer with damaged pins can lead to further damage to the printhead or even the mainboard.

We do sell these replacement FFC cables. For Epson models such as the WF-7210, WF-7218, WF-7610, WF-7620, WF-7621, WF-7710, and WF-7720, you can purchase the replacement bundle directly from BCH Technologies. Please visit this link to check it out:
Printhead FFC Bundle Combo for Epson Workforce Models
(https://bchtechnologies.com/products/printhead-ffc-bundle-combo-for-epson-workforce-wf-7210-wf-7218-wf-7610-wf-7620-wf-7621-wf-7710-wf-7720?_pos=2&_sid=be5398a87&_ss=r)

If you're using a different model, simply search for “printhead FFC” at bchtechnologies.com (https://bchtechnologies.com) to find the appropriate cable for your machine.

Removing and Reinstalling the FFC Cable

The FFC cables can be tricky to replace—especially the end connected to the mainboard or board interface hidden deep inside the printer.

Here are some tips for accessing and installing the cable properly:

1. Power Off and Unplug: Before you begin, always unplug the printer and wait a few minutes to let any residual charge dissipate.

2. Access the Mainboard Side:

   • Depending on the model, you’ll usually need to remove the back panel or left side panel of the printer.

   • Use a screwdriver to unscrew the panels carefully. Look out for hidden screws beneath labels or rubber covers.

   • Once opened, you should see the mainboard where the FFC plugs in.

3. Removing the FFC:

   • The FFC is held in place by a locking ZIF (Zero Insertion Force) connector. Use a plastic spudger or your fingernail to flip the locking tab upward.

   • Gently slide the old cable out. If it's burned, you may need to carefully clean any soot or residue on the connector using isopropyl alcohol and a soft brush.

4. Installing the New Cable:

   • Align the cable’s contact side (usually shiny or copper-facing) toward the contact pins inside the connector.

   • Slide the new FFC in straight and evenly. Then press the locking tab down to secure it.

   • Route the cable exactly the same as the original path to avoid bending, folding, or obstructing moving parts like the carriage.

5. Printhead Side:

   • Lift the printhead gently to access the underside where the FFC attaches. Again, you’ll find a ZIF connector—unlock it, remove the old cable, and insert the new one.

6. Testing:

   • Once everything is reassembled, power on the printer and check for Error Code 031006 (Communication Error) or 031001 (Printhead Missing). If you see these, double-check the FFC installation for proper contact and orientation.

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems. So, we're not able to provide remote troubleshooting, suggestions, or support for printer repairs. We offer an in-person evaluation and repair service via our local diagnostic facility (https://bchtechnologies.com/printer-repair-service). Given the high demand, we operate on a first-come, first-served basis. So, it might take a few weeks before we can get your printer to drop it off. Our services are structured to repair either a whole printer or specific parts, with clear instructions on how to proceed. However, we acknowledge that our rates aren't the most economical. Thus, we highly recommend that you resort to self-help via online research. You can start by checking out YouTube or visiting our YouTube channel's homepage (https://youtube.com/@bchtechnologies). Look for specific videos using the search icon next to "About" on the right-hand side of the menu bar. I receive dozens of queries every day asking about videos for specific topics. Having created videos over the past nine years, it's challenging to remember every single one. Therefore, using YouTube's search function would be most efficient. Plus, YouTube might suggest relevant videos from other channels that could assist you.

Thank you once again for reaching out to us and for being part of the BCH community. We truly value your support!