How to Fix Epson M188B Printer Stuck on Red Printing?

It sounds like your Epson M188B printer is experiencing an issue with the print head. When it starts printing in black but then switches to red and continues to print in red, it typically indicates that the black ink head is failing. This is a common problem, especially if the printer has been used frequently—like printing around 100 orders a day. To resolve this issue, I recommend replacing the print head. The part you’ll need is identified by the part number `1235228`, and it usually costs around $15. Once you replace the print head, it should restore the printer's ability to print in black again. If you're unsure where to find a repair shop or how to replace the part, you can usually find assistance online or at local electronics stores. Just make sure to follow any instructions carefully to ensure the replacement is done correctly. If you have any further questions or if the problem persists after the replacement, feel free to reach out for more help.