Fixes to Epson ET-8550 Won't Turn On After DTF Conversion

Question: I converted my Epjson ET-8550 to a DTF printer and ordered the seal kit through BCH Technologies. Even after installing the printhead seals and bolting everything back together twice, it still won't turn on. What could be causing this?

Answer:

Thank you for emailing BCH Technologies. We can sympathize with the frustration of printer problems – particularly those stalling your DTF printing projects. Relax that we value every inquiry for a complete and thoughtful response. We want to thank all of you for your support, especially our YouTube channel (https://youtube.com/@bchtechnologies). Please add your comments and feedback to help us increase our technical knowledge and help many within the printer repair community. We'll investigate why your Epson et-8550 isn't turning on after DTF conversion and installing a seal kit.

A waterproof seal kit installation on the printhead is crucial for protection against external ink contaminations. The seal securely keeps liquid from intruding into your components. However, this procedure does not harm your printer's internal methods. Since the only electrical connections are simple two-wire hookups unless they were reconnected incorrectly during installation, there should not be any power supply issues due to waterproofing.

The external waterproof locks the printhead from ink, but sometimes, it penetrates due to internal power cleaning. A maintenance process such as purging can lead to all-over inlets being covered by forcefully spitted-out broken wipes. This could cause internal issues if extra ink has arrived at specific hardware circuits. The Epson company also cautions that powered cleaning is generally a last resort because repeated use may overload the system. After those steps, it's recommended to give the printer a minimum of 12 hours to mend.

Fuse for Printhead vs. Fuse for Entire Printer If the fuse for the printhead had blown, most of time the printer can still turn on, just displaying error message, . But your Epson ET-8550 must turn on, so the problem is more than just a print head fuse. In general, the fuse supplying power to print has likely been melted. This is necessary to check your printer's fuses and other internal aspects.

Blown Capacitor or Transistor: Another possibility is that there is either a blown capacitor or a transistor on the printer's power board. These components are responsible for the power distribution of your printer, and if damaged, they will cause your printer not to turn on at all. This kind of damage usually happens when you install or fit it, possibly due to a power surge. Next, please make sure all components are installed correctly and check the power board for burnt/melted parts.

Other Potential Power Supply Problems: Although much less likely, a dysfunctional power supply or a problem in the motherboard may also be at fault. Either of these would prevent the printer from getting enough power to operate. You should also ensure the power supply unit is connected correctly and outputting what it should be. We can test it using another unit or replace it.

However, diagnosing some of these problems is typically time-consuming and requires specific tools. Printers are a challenge for remote diagnosis because they require so much hands-on work and have other complexities. This is why we cannot offer long-distance troubleshooting or advice for types of printer possible repairs. We offer service (https://bchtechnologies.com/printer-repair-service) at our local repair facility for diagnostic and in-person repairs. Since our services are provided on a first-come, first-served basis, assessing any printer you decide to mail in or drop off may take several weeks. We offer easy-to-follow steps for getting a complete printer repair or part replacements for mail-in and local drop-off options. That said, we realize our rates are only sometimes the most economical. Thus, we favor self-care ways like trying to find online whenever possible.

Head to the BCH Technologies YouTube channel (https://youtube.com/@bchtechnologies) and use the search icon beside the “About” tab to locate specific video tutorials. Since I have created hundreds of videos over the past nine years, you will find the fastest way to access any information is to search by keywords. YouTube could also recommend other related videos from creators that might solve your problem.

Thanks again for the response, and good luck leveraging this information in your solution!