3-in-1 Combo B12, F1 & F2 Fuse for Epson ET-8550 / ET8550 / ET-8500 – Fix Errors 031004, 031005, 031006, No Power, Freeze
$22.99 $29.99
This repair bundle includes the key on-board protection components for the Epson ET-8550, ET-8500, and ET8550 series. These components commonly fail when the printhead or cable shorts, leading to startup failures and system errors.
This kit includes all three parts:
F1 Fuse (individually labeled)
F2 Fuse (individually labeled)
B12 (individually labeled)
Each part comes in its own clearly marked anti-static bag.
Do not use the F1 and F2 fuses interchangeably-they may look identical, but they serve different circuits and must be installed in the correct locations.
Common Symptoms This Bundle Addresses
These components often fail when there is an electrical short, which can cause:
Errors 031004, 031005, 031006
Printer powers on but freezes during startup
Printer turns on for a moment, then shuts off
Completely no power or partial power
Blank printing (printhead receives data but not firing power)
Startup stops halfway, then throws an error
Printer detects the printhead inconsistently
These symptoms typically mean that one or more protection components (F1, F2, or B12) have opened or failed.
Important Note
Replacing these parts does not guarantee a full repair.
They usually fail because something upstream was damaged-commonly:
A shorted printhead
A burnt FFC cable
A failing driver circuit
Installing new components without correcting the root cause can cause the new parts to fail again.
This bundle is intended to help trained technicians restore the correct power pathway, but it is not a guaranteed fix for every case.
Package Includes
1 × F1 Fuse (in labeled anti-static bag)
1 × F2 Fuse (in labeled anti-static bag)
1 × B12 (in labeled anti-static bag)
All components are tiny SMD parts and require micro-soldering skills.
If you are not experienced with precision soldering, please seek help from a local technician or search "Makers around me" to find nearby makerspaces or hobbyists skilled in electronics repair.
Related products
Complete Your Purchase
Categories
Add your product to the cart to view shipping rates. We've delivered to 289,762 customers in 149 countries.
Sign up for our newsletter to get weekly coupons and tips on printer refills and repairs.
Got a question? Don't hesitate to email us at support@bchtechnologies.com
Subscribe to Kevin's YouTube channel for the latest tips on printer repair and maintenance.
Recently viewed
Yes, you can easily make your own with a washed out water bottle but these come ready to go and are a better quality plastic. I won’t be using mine as a waste tank since I have a my CISS but will be using the bottle for my maintenance and cleaning solutions.
David Sustaita
XLARGE Waste Ink Collection Tank Combo with Small Tube for Epson (AS-EP-WASTE-25MM)
I can’t say enough about this company! Sent my main board in for repair and they were fast and the cost was reasonable. They are also quick to respond. This is not the first item I’ve purchased from them and won’t be the last. Also, the YouTube videos are a must to watch!
Nancy Donaldson
Fast Track Mainboard Repair: L1800, XP-15000, ET-15000, WF-7610 7620, WF-7110, WF-7710 7720, ET-8550, ET-2720, ET-2750Printer Mainboard, Formatter Board, Motherboard Troubleshooting and Repair
I have an old Epson ET-2750 eco tank printer, which I have used for years, and since it is uses refillable ink tanks, have used very little ink over the years. I love this printer because I can print lots and lots of pages, including double-sided at very low cost, and it is very reliable. I recently had a paper jam, which is very unusual. When I took off the back panel to clear the jam, I accidentally dropped it on the floor, and when I replaced the back panel, the printer jammed every time I tried to print double-sided. I found a small plastic piece on the floor that fit on one end of the roller, but didn't realize I was missing the other end. I eventually noticed that there was a gear on the back panel next to where the roller fits into the panel. I deduced that I must be missing a gear to pop into the end of the roller, to mesh with the gear on the panel. I couldn't find the missing gear anywhere, and figured my cats must have lost it or my wife might have swept it up when sweeping the floor, and discarded it. Through a Google search, I found BCH Technologies, ordered the part from them, it fit perfectly, and now I can print double-sided again on my faithful old Epson printer. I very much appreciated being able to get the missing part from them. I thought the price for the part and shipping was high for such a small part, but that was the only down side.
Daniel Parker
Duplex Roller Feed Gear for Epson Printers
