Epson ET-8550 Won't Turn On After Connecting CISS: What Could Be The Problem?

Question: My Epson ET-8550 won't turn on after I tried to connect my CISS machine using the steps from the setup video. I tried to proceed to the next steps, but the printer won't power on. Can anyone help me figure out what to do?

Answer: 

1. Check the FFC Cable Pin #7 for Tarnishing

A common issue when printers fail to turn on, especially after a modification like setting up a CISS (Continuous Ink Supply System), involves the FFC (Flexible Flat Cable) that connects the printer's mainboard to other components. In your case, the #7 pin on the FFC cable on the left side is a key point to check.

If the pin is tarnished or dirty, it can cause a poor connection, which could prevent the printer from powering up properly. You'll need to inspect the cable carefully for signs of tarnishing or damage at that pin. If you notice any corrosion or build-up, replacing the FFC cable will likely resolve the issue.

2. Inspect the Printhead (Potentially Damaged)

In cases where a printer won't turn on after installation or modification, the printhead is another component to check. The printhead could have sustained damage during the CISS installation process or could simply be malfunctioning after use.

To confirm whether the printhead is the issue, you can use a multimeter to check for continuity and proper function. Testing the printhead's electrical connections can often reveal if it's still operational or if it needs replacement.

For guidance on using a multimeter to test the ET-8550 printhead, you can visit our website at bchtechnologies.com and search for "ET8550 Multimeter." This will bring up a detailed guide that walks you through the multimeter testing process.

3. Consider Coming In for Local Repair Service

If you are located near Greensboro, NC, we offer in-person repair services at our local diagnostic facility. In cases like this, where the issue could be electrical or related to the mainboard, having our technicians perform a hands-on evaluation can be the most efficient way to get your printer back to working condition.

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems. Therefore, we are not able to provide remote troubleshooting, suggestions, or support for printer repairs. However, we offer in-person evaluation and repair services through 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 in for service. Our services are designed to repair either the whole printer or specific parts, with clear instructions on how to proceed. However, we understand that our rates may not be the most economical. So, we strongly recommend that you resort to self-help via online resources. You can start by checking out YouTube, particularly our YouTube channel (https://youtube.com/@bchtechnologies). You can use the search icon next to "About" on the right-hand side of the menu bar to search for videos on specific topics. I receive dozens of questions every day asking about specific issues, and with over nine years of creating content, it's challenging to recall every single video. So, using YouTube's search function is the fastest way to find what you need. Plus, YouTube may suggest relevant videos from other channels that could be useful.

Thanks again for reaching out to us, and thank you for your continued support!