Epson ET-8550 Won’t Turn On: Common Causes and Fixes

Question: I cannot get my Epson ET-8550 printer to power up. The power cord is suitable, and I've held the power button for 10 seconds, but it's still dead. What could be wrong?

Answer:

Thank you for contacting us! We at BCH Technologies thank you for taking the time to interact with us, especially for supporting our YouTube channel. We appreciate this feedback as we continue advancing our technical growth and improvement path. So, with that out of the way, what could be causing your unresponsive Epson ET-8550?

Motherboard with a Blown Fuse

A dead fuse on the motherboard is one common issue, particularly following power surges. Even if the rest of the printer gets powered on, and you only see an error regarding the printhead, the fuse related to the Printhead is damaged. If your Epson ET-8550 is not powering on, this can indicate a more severe problem with the fuse that may affect the whole system. To diagnose this, you must unscrew the printer and verify if ruined fuses are going across over the motherboard. This is, unfortunately, still a bit on the technical side.

Power Board with Blown Capacitor or Transistor

This often results from a capacitor or transistor gone wrong on the power board. These controls are where electrical current is transmitted through the printer. Some of them cannot be replaced easily, and if one is blown out due to a power surge or electrical fault, your printer will not turn on. You must remove the printer and look for blown or burned-out capacitors and transistors on the board. Unless you see apparent physical damage, these parts must be replaced.

Power Issues/Sensitive

Also, a power supply problem or short somewhere in the motherboard is less common but would keep the printer from powering up. If so, try changing the power supply with a known one that works. There may be more severe problems with the electrical system, mainly if a Continuous Ink Supply System (CISS) has been installed on the printer and was set up incorrectly.

Electrical Fault Highlighted on modifications or conversions.

We've often noticed a positive change in the electrical system, which seems to work more steadily. We hope for smooth sailing after installing CISS or for the lights to stop blinking continuously due to printing specialization. What do you think? If this did align with the problem, retracing your installation to ensure no loose wires or misalignment in the ground may be a good idea.

Unfortunately, because of the delicate nature and intricate inner workings that went into creating this technology, diagnosing any faults will require in-person analysis and an experienced eye.

Printer matters can sometimes be tricky to resolve as they require hands-on work. We cannot provide remote software diagnostics or printer repair services. We provide in-person diagnosis and repair service (https://bchtechnologies.com/local) at our local diagnostic center on a first-come, first-served basis. If you walk in or mail your printer to us, it may be a couple of weeks before we can get it. We can fix everything from the printer to parts only and even have a ship-in service and local drop-off.

To that end, we realize our pricing may only sometimes be the most cost-effective. Of course, we highly recommend learning self-help techniques through Google. You can search first by clicking on the About section next to the search icon from our Youtube channel home page ( https://youtube.com/@bchtechnologies) where there are a lot of repair videos may fit your issue. Hundreds of videos go back nine years, so it's hard to remember them all — but YouTube searching can be handy when attempting to find related content. YouTube might even introduce new content suggestions from 3rd parties that are useful to you based on your preferences.

Again, thank you for your patience and for contacting us. We hope to help you further!