Would this be the same for the procolored epson L1800 in teal? Had the paper and ink lights flash red and when I went to turn the printer front power on to get the printer head to move the power didn’t turn on. Now my unit doesn’t power on.
Hey, thanks for the video. It was very helpful! I have an Epson L1800 that won't turn on. The power supply seems fine. And the transistors on the logic board are fine too. When I measure the output voltage of the power supply, it's 42V, but when I connect the power supply to the logic board, the output voltage of the power supply drops to 3.8V. Do you have any idea what this could be?
Hi! Thank you so much for watching and commenting-I’m glad you found the video helpful! It means a lot to hear feedback like this from our viewers. 😊 What you observed is correct. The power supply typically has a ground, a power output (42V), and a standby voltage (1.3 to 1.5V). When you connect it to the board, a standby chip raises the standby voltage to around 2V. This signals the 42V output to drop to about 4V, which prevents the mainboard from being continuously heated like a furnace with full 42V power. A reading of 3.8V is within the normal range. You’re off to a great start with your troubleshooting! I’d recommend continuing to check key components, such as the Q601 transistor, to pinpoint the issue. bchtechnologies.com/products/transistor-qf601-for-mainboard-cb53-main-l1800-1390-1430-epson-printers-fix-no-power I get so many questions daily that it’s hard to keep up with them all, but I appreciate your patience. For quicker responses, you can email me directly at support@bchtechnologies.com, or post your question on my most recent videos (not Shorts) for better visibility.Thanks again for being part of our community! We try to release new videos every week to keep up with printer technologies, so stay tuned for more content that might help with repairs like this one.
The 1 and 3 transisters went bad on my L1800 and I ordered replacement from you guys but after changing same 1 and 3 out its still giving a bad reading. Why is that??
Hi Kevin and Abby, wondering if my printhead is moderately safe to retry after I replace my transitors. I wasn't having luck printing after running very many printhead cleanings, I pulled my printhead and very cautiously cleaned it and made sure there was zero dampness around the connectors or anything before putting power back to the head. Printer booted up normally it went to dock and done It's typical startup process. Then I turn the power off and the chirping started and wouldn't power back up. This printhead is only a few months old, I purchased and verified OEM from BCH, should be in decent condition I would imagine but I'm wondering if my transistors had had enough of all of the multiple cleanings? Is there a way to test a printhead for a short before putting it back in?
I second this question. I wasn't having luck printing after running very many printhead cleanings, I pulled my printhead and very cautiously cleaned it and made sure there was zero dampness around the connectors or anything before putting power back to the head. Printer booted up normally it went to dock and done It's typical startup process. Then I turn the power off and the chirping started and wouldn't power back up. This printhead should be in decent condition I would imagine but I'm wondering if my transistors had had enough of all of the multiple cleanings? Is there a way to test a printhead for a short before putting it back in?
Thanks for the clarification! It sounds like the issue is more likely with the power module on the mainboard, which can cause fluctuations that interfere with the cleaning cycle. Here’s what I suggest-start by unplugging all the cords connected to the mainboard. Then, reconnect only the power cord and the control panel. Try powering on the printer with nothing else connected. This can sometimes force the printer to rewrite the cleaning command and bypass the issue. If the blinking persists, the mainboard might need a professional inspection to ensure there isn’t an underlying hardware problem that could get worse over time. I really appreciate you subscribing to the channel and asking such detailed questions. If you need further help or a quicker response, feel free to reach out to me directly at support@bchtechnologies.com. I try to answer subscribers within 48 hours, and your support is helping me get closer to that 100k goal. Thanks again for watching and being part of the community!
Thanks so much for watching my video and for reaching out with your question! I understand how frustrating it can be when your Epson L1800 won’t power on, especially after replacing key components like the bypass and motherboard. I’ll walk you through some additional troubleshooting steps that might help pinpoint the issue. First, check the transistors on the mainboard, as these are a common cause of power issues. Specifically, the 4 transistors responsible for power management are critical to inspect. Even though you’ve replaced the motherboard, it’s worth double-checking them to ensure they’re functioning properly. If you’re not sure how to proceed, I have a video explaining the process in detail here: th-cam.com/video/c_kmqwyZjLg/w-d-xo.html. Another key component to examine is the QF601 transistor, which is vital for the mainboard’s power functions in many Epson printers, including the L1800. A faulty QF601 can cause the printer to lose power entirely. You can learn more about this specific transistor and order a replacement here: bchtechnologies.com/transistor-qf601-for-mainboard-cb53-main-l1800-1390-1430-epson-printers-fix-no-power/. If those checks don’t solve the problem, inspect the power supply unit (PSU). The PSU is crucial for providing power to all the printer’s components. Even if the main power at the back is working, the PSU could still be malfunctioning, preventing the printer from powering on. For a detailed guide, check out this tutorial: th-cam.com/video/X2SeQjMBq6s/w-d-xo.htmlsi=MbyYES66uy4CEIbc. Finally, ensure the control panel FFC (Flat Flexible Cable) is properly connected and free from damage. This cable facilitates communication between the control panel and the mainboard, and any issues here could cause power failures. Replacement cables are available here: bchtechnologies.com/9-pin-ffc-connector-cable-for-l1800-control-panel-and-mainboard/. If you have more questions, feel free to email me at support@bchtechnologies.com or post on my latest video (not shorts) for a quicker response. Thanks again for watching-I really appreciate your support, and I’m always here to help!
Would this be the same for the procolored epson L1800 in teal? Had the paper and ink lights flash red and when I went to turn the printer front power on to get the printer head to move the power didn’t turn on. Now my unit doesn’t power on.
Do you still offer for printer to be sent to you for repair?
Hey, thanks for the video. It was very helpful! I have an Epson L1800 that won't turn on. The power supply seems fine. And the transistors on the logic board are fine too.
When I measure the output voltage of the power supply, it's 42V, but when I connect the power supply to the logic board, the output voltage of the power supply drops to 3.8V.
Do you have any idea what this could be?
Hi! Thank you so much for watching and commenting-I’m glad you found the video helpful! It means a lot to hear feedback like this from our viewers. 😊
What you observed is correct. The power supply typically has a ground, a power output (42V), and a standby voltage (1.3 to 1.5V). When you connect it to the board, a standby chip raises the standby voltage to around 2V. This signals the 42V output to drop to about 4V, which prevents the mainboard from being continuously heated like a furnace with full 42V power. A reading of 3.8V is within the normal range.
You’re off to a great start with your troubleshooting! I’d recommend continuing to check key components, such as the Q601 transistor, to pinpoint the issue. bchtechnologies.com/products/transistor-qf601-for-mainboard-cb53-main-l1800-1390-1430-epson-printers-fix-no-power
I get so many questions daily that it’s hard to keep up with them all, but I appreciate your patience. For quicker responses, you can email me directly at support@bchtechnologies.com, or post your question on my most recent videos (not Shorts) for better visibility.Thanks again for being part of our community! We try to release new videos every week to keep up with printer technologies, so stay tuned for more content that might help with repairs like this one.
The 1 and 3 transisters went bad on my L1800 and I ordered replacement from you guys but after changing same 1 and 3 out its still giving a bad reading. Why is that??
Hi Kevin and Abby, wondering if my printhead is moderately safe to retry after I replace my transitors. I wasn't having luck printing after running very many printhead cleanings, I pulled my printhead and very cautiously cleaned it and made sure there was zero dampness around the connectors or anything before putting power back to the head. Printer booted up normally it went to dock and done It's typical startup process. Then I turn the power off and the chirping started and wouldn't power back up. This printhead is only a few months old, I purchased and verified OEM from BCH, should be in decent condition I would imagine but I'm wondering if my transistors had had enough of all of the multiple cleanings? Is there a way to test a printhead for a short before putting it back in?
我有一台xp-760 自检的时候自动重启 是否能指导一下怎么解决
Anytime I change transistors on my 1400 print, it works but goes off immediately when about to print a nozzle check. What do I do in this case?
I sent my l1800 and 2 1430 mainboards in months ago. Was there any out come?
Thank You for Sharing.
After replacing the transistors, what about the print head? Is it still functional or should we replace it?
I second this question. I wasn't having luck printing after running very many printhead cleanings, I pulled my printhead and very cautiously cleaned it and made sure there was zero dampness around the connectors or anything before putting power back to the head. Printer booted up normally it went to dock and done It's typical startup process. Then I turn the power off and the chirping started and wouldn't power back up. This printhead should be in decent condition I would imagine but I'm wondering if my transistors had had enough of all of the multiple cleanings? Is there a way to test a printhead for a short before putting it back in?
Where is your location?
I have 3 L1800 motherboards that need to be fixed.
My epson l1800 too busy power blink green light too long
Some one can help me😪😪
Thanks for the clarification! It sounds like the issue is more likely with the power module on the mainboard, which can cause fluctuations that interfere with the cleaning cycle.
Here’s what I suggest-start by unplugging all the cords connected to the mainboard. Then, reconnect only the power cord and the control panel. Try powering on the printer with nothing else connected. This can sometimes force the printer to rewrite the cleaning command and bypass the issue. If the blinking persists, the mainboard might need a professional inspection to ensure there isn’t an underlying hardware problem that could get worse over time.
I really appreciate you subscribing to the channel and asking such detailed questions. If you need further help or a quicker response, feel free to reach out to me directly at support@bchtechnologies.com. I try to answer subscribers within 48 hours, and your support is helping me get closer to that 100k goal. Thanks again for watching and being part of the community!
Can you email me my power won’t turn on at the front of machine
Thanks so much for watching my video and for reaching out with your question! I understand how frustrating it can be when your Epson L1800 won’t power on, especially after replacing key components like the bypass and motherboard. I’ll walk you through some additional troubleshooting steps that might help pinpoint the issue.
First, check the transistors on the mainboard, as these are a common cause of power issues. Specifically, the 4 transistors responsible for power management are critical to inspect. Even though you’ve replaced the motherboard, it’s worth double-checking them to ensure they’re functioning properly. If you’re not sure how to proceed, I have a video explaining the process in detail here: th-cam.com/video/c_kmqwyZjLg/w-d-xo.html.
Another key component to examine is the QF601 transistor, which is vital for the mainboard’s power functions in many Epson printers, including the L1800. A faulty QF601 can cause the printer to lose power entirely. You can learn more about this specific transistor and order a replacement here: bchtechnologies.com/transistor-qf601-for-mainboard-cb53-main-l1800-1390-1430-epson-printers-fix-no-power/.
If those checks don’t solve the problem, inspect the power supply unit (PSU). The PSU is crucial for providing power to all the printer’s components. Even if the main power at the back is working, the PSU could still be malfunctioning, preventing the printer from powering on. For a detailed guide, check out this tutorial: th-cam.com/video/X2SeQjMBq6s/w-d-xo.htmlsi=MbyYES66uy4CEIbc.
Finally, ensure the control panel FFC (Flat Flexible Cable) is properly connected and free from damage. This cable facilitates communication between the control panel and the mainboard, and any issues here could cause power failures. Replacement cables are available here: bchtechnologies.com/9-pin-ffc-connector-cable-for-l1800-control-panel-and-mainboard/.
If you have more questions, feel free to email me at support@bchtechnologies.com or post on my latest video (not shorts) for a quicker response. Thanks again for watching-I really appreciate your support, and I’m always here to help!