3-Piece 041B Printhead Driver Chip Power-Stage Repair Combo for Epson ET-8550 XP-15000 (Driver IC + MOSFET Pair)

What's Included

1 × Epson 041B Printhead Driver Chip (QFN28)
1 × Matched Silver-Cover MOSFET Pair (2 pieces)
(A complete power-stage set for one 041B driver IC)

This 3-piece combo provides everything needed to rebuild the power-control stage for a single Epson 041B printhead driver IC-ideal for fixing blank printing, nozzle dropout, and power-stage failures on the ET-8550, XP-15000, and related Epson models.

1. Epson 041B Printhead Driver Chip - QFN28
A genuine Epson printhead driver IC responsible for controlling nozzle firing, ink timing, and power delivery to the printhead.

Key Features
Precise Nozzle Control - Drives the firing pulses that activate each printhead nozzle.
High-Performance QFN28 Package - Efficient thermal design with a compact footprint for modern Epson boards.
Stable Communication - Ensures clean signal transfer between the mainboard and the printhead.

Direct Replacement for symptoms such as:
Missing colors
Partial nozzle firing
Random nozzle dropouts
Completely blank prints
Compatible Models
Common in newer Epson printers, including:
ET-8550 / ET-8500
XP-15000 / XP-15010 / XP-15080
Each printer uses two 041B chips, usually labeled:
IC800
IC801
This combo includes one (1) 041B IC.

2. Matched Silver-Cover MOSFET Pair (2 Pieces)

These MOSFETs make up the high-current power stage that feeds the 041B driver chip.
Both MOSFETs are identical and operate as a matched pair-they must always be replaced together.
If your printer has two 041B chips, you will need two combo sets.

Why These MOSFETs Are Required
When the power-stage MOSFETs fail, the printer typically:
Prints completely blank
Shows no nozzle lines during testing
Sounds normal but outputs no ink
Displays no error messages
This happens because the MOSFETs supply the surge power required to fire the printhead.
If they fail, the 041B receives logic power, but the printhead never activates.

Perfect For Fixing
Choose this combo if your printer has:
Blank pages with zero ink output
Printhead firing failures
Nozzle test showing 0% lines
Burn marks or damage near IC800 / IC801
Previous MOSFET or 041B driver chip failure
Replacing both the 041B IC and the MOSFET pair at the same time prevents repeat failures and fully restores printhead power.

📦 Combo Contents

1 × Epson 041B Driver Chip (QFN28)
2 × Silver-Cover MOSFETs (Matched Pair)