Epson ET-2720 Keeps Restarting or Fails to Boot - Common Causes and Fixes

Question:
I'm experiencing an issue with my Epson ET-2720. When I turn it on, the Epson logo appears and I hear the motor start, but the printer never fully boots. It restarts a couple of times and then shuts off completely. Is there a solution or something I can check to fix this problem?

Answer:

1. Understanding the Boot Loop Problem

Your description-seeing the Epson logo, hearing a motor spin, and then watching the printer restart repeatedly before turning off-suggests a boot loop failure. This typically points to an electronic board issue, not a simple software glitch. The printer begins its startup sequence but fails the internal self-check before completing the boot.

The most common causes include:

• Power board faults (for example, a damaged capacitor or transistor).

• Mainboard logic failure caused by shorted components.

• Firmware corruption or a crash during initialization.

2. Testing the Power Supply Board

In your comment, you referenced testing components A2222, C6144, and C6082-these are critical parts of the power circuit responsible for voltage regulation. A fault in these components can prevent stable power delivery to the mainboard, causing the printer to restart.

Steps to consider:

• Use a multimeter to check continuity and resistance around C6144 and C6082 (capacitors). If they show a short or no capacitance, replace them.

• Inspect the A2222 transistor (or voltage regulator) for overheating, corrosion, or damage.

• Ensure there is no short to ground on the 24V or 42V output lines, as this could trigger a reboot cycle.

If the power supply board is stable and voltages are correct, then the fault may lie beyond the power section.

3. Mainboard or Firmware Faults

If the power circuit checks out, the main logic board (motherboard) could be at fault. This can happen when a firmware update failed or electrical surge damaged internal flash memory.

Possible fixes include:

• EEPROM reset: Some users have had success disconnecting the printer, holding down the power button for 30 seconds, then reconnecting power.

• Firmware reflash: Unfortunately, Epson does not officially support firmware reinstallations for consumer models. Some repair technicians use service tools (like WIC Reset Utility or official Epson Firmware Updater) to attempt recovery, but this carries risk if the power cycles mid-update.

• Mainboard replacement: If you confirm that the power supply is good and the firmware cannot be restored, replacing the main logic board is often the only reliable solution.

4. Inspecting for Moisture or Short Circuits

Because the ET-2720 uses a compact design, even a small ink spill or condensation on the internal board can cause a short. Carefully check the board under good lighting for signs of corrosion, especially near connectors and under the printhead cable area. Clean any residue using isopropyl alcohol and a soft brush.

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems. Therefore, we're not able to provide remote troubleshooting or part-replacement guidance. However, we do offer in-person diagnostics and repairs through our local repair facility (https://bchtechnologies.com/printer-repair-service). Due to the high volume of service requests, we operate on a first-come, first-served basis, and it may take several weeks before your printer can be evaluated. Our facility offers full printer repair or part-specific service, with clear instructions for drop-off and turnaround.

If you prefer self-repair, we encourage you to explore detailed video tutorials on our YouTube channel (https://youtube.com/@bchtechnologies). You can use the search icon near the "About" section to find videos related to your issue. With over nine years of technical uploads, searching directly on YouTube is often the fastest way to find the exact repair guide you need.

Thank you again for reaching out to us. We truly appreciate your continued engagement and trust in BCH Technologies.