Question:
How can I fix the issue of my Epson printer printing blank pages? I tested the printhead on another printer and confirmed it works fine. I also tried jumpering the fuses, but the printer still produces blank pages. Why is this happening?
Answer:
Now, let's address your situation. You've already confirmed the printhead is functional by testing it in another printer, which rules out the head itself as the issue. That narrows the problem down to the printer's main board and circuitry.
1. The Danger of Jumpering Fuses
When an Epson printer shows symptoms like blank pages, one possible culprit is a blown fuse on the main board that protects the printhead circuit. However, bypassing (or "jumpering") these fuses is extremely risky.
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The fuse is designed to blow in order to protect the driver IC chip.
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If the fuse is bypassed and the underlying problem persists (such as a short in the circuit), the next failure point will be the driver IC chip.
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Once the driver IC burns out, the board is usually much harder and more expensive to repair.
This explains why your printer still produces blank pages even though you bypassed the fuse: the damage has likely moved deeper into the electronics, possibly destroying the driver IC.
2. Other Possible Causes of Blank Pages
Aside from fuse or IC damage, blank-page printing can also result from:
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Damaged FFC (flat flexible cable): If the cable has a short or break, signals from the board will not reach the head.
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Main board failure: Even if the printhead is good, the board must properly supply data and voltage. A blown driver IC or corroded traces will stop ink firing.
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Incorrect head reinstallation: If the head isn't seated properly, electrical contact may be incomplete.
3. Correct Diagnostic Approach
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Use a multimeter to test the fuses for continuity, rather than bypassing them. If they are open, replace them with the correct rating.
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Check the FFC cable for shorts or physical damage.
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If the fuses are intact but the head is still not firing, the main board's driver IC has likely failed, especially after a fuse bypass attempt.
Repairing at the board level can be very challenging without specialized tools and experience in microelectronics. Addressing printer issues like these is complex and hands-on, so we are unable to provide detailed remote troubleshooting or repair instructions. However, we do offer in-person evaluation and repair through our local diagnostic facility (https://bchtechnologies.com/printer-repair-service). Due to high demand, repairs are handled on a first-come, first-served basis, and it may take a few weeks before we can accept your unit. Our services cover both complete printer repairs and part-specific work, and we'll provide clear guidance if you choose this route. That said, we know our pricing may not be the most economical, so we encourage you to explore self-repair options online as well. A good starting point is our YouTube channel homepage (https://youtube.com/@bchtechnologies). Use the search function next to "About" to find tutorials that may apply to your situation-over the past nine years we've produced many videos, and YouTube may also suggest helpful content from other repair professionals.
Thank you again for your question and for supporting BCH Technologies. We truly appreciate the opportunity to guide you through these technical challenges.