How to Replace the F1 Fuse on an Epson L18050 Printer: What You Need to Know

Question:

I have an Epson L18050 printer with a blown F1 fuse on the motherboard. I want to replace it myself—can you help me identify the correct fuse to use?

Answer:

The F1 fuse on the printer’s motherboard plays a critical protective role. It helps prevent damage to sensitive components in case of electrical surges or shorts. When this fuse blows, it can lead to a complete shutdown of the printer’s mainboard functions, including triggering error codes such as 0x9A or 031006, which are common across several Epson models when the mainboard suffers from overcurrent or voltage issues.

For your Epson L18050, you can replace the F1 fuse using the same specification as those used in other models, such as the WF-7720, WF-7710, ET-8550, and XP-15000. We have a compatible fuse readily available here:
F1/F2/F3 Fuse for Epson Mainboards
(https://bchtechnologies.com/products/f1-fuse-also-f2-f3-for-epson-mainboard-fix-error-0x9a-or-031006-on-wf-7720-wf-7710-wf-3640-et-8550-xp-15000?_pos=2&_sid=b187e1d53&_ss=r)

These are surface-mount polyfuses, typically rated for 32V and 1A (always confirm your board’s printed label or service manual for accurate information). Replacing it requires precision soldering, as these fuses are pretty miniature and the board itself is delicate. If you lack experience with soldering surface-mounted components, I strongly recommend seeking assistance from someone who is experienced or using a low-heat soldering technique with tweezers.

Also, ensure the underlying cause of the blown fuse is addressed. Often, a fuse blows due to a short circuit, overvoltage from a faulty power adapter, or a defective component downstream, such as a printhead or motor. Simply replacing the fuse without diagnosing the root cause can lead to repeated failures.

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems. Therefore, we're unable 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. Therefore, it may take a few weeks before we can arrange for your printer to drop it off. Our services are structured to repair either the 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 the most efficient approach. Additionally, YouTube may suggest relevant videos from other channels that can assist you. Thanks again for your question and for being part of our community!