Epson No Power - Repair Printer Mainboard Formatter Board Transistor MOSFET ET-2720

[@martelmatisse5609]

I disagree with your assessment about ppl not liking these videos... I love it! Please keep making more.

[@blondieman63]

Just like to say , thank you, i have a epson et2720 printer no power on, so stipped the printer and changed the 2 transisters, now the printer is working fine . Big thank you !!

[@BCHTechnologies]

I'm so glad to hear that you were able to fix your Epson ET2720! Great job on troubleshooting and getting it back to life!

[@carloslicata8262]

hello. from Mar del Plata Argentina. very good explanation of how to carry out a good diagnosis, verification and repair. Repair technical videos are very welcome for those of us who are technicians. Greetings and thank you very much for your class.

[@o.e.r.3287]

As someone who repairs a lot of printers, your videos are becoming a quick favorite of mine.

[@xwarp]

So, I ended up having to replace the print head and those two transistors on this ET-2760 printer. Fixed it and prints absolutely fantastic. Thank you again for helping me revive this printer that I got from goodwill for 4 dollars!

[@BCHTechnologies]

I'm so glad you were able to fix your printer! It's amazing what a little work and determination can do. Enjoy those fantastic prints!

[@xwarp]

YES!!!! Keep making these videos, while I may not need to reference your other videos, THIS video and the video regarding the removal of the scanner will certainly help me fix my ET-2760 with the same power on issue. THANK YOU! Will update when the printer is fixed.

[@BCHTechnologies]

Fixing printers is like solving a mystery-a new twist appears when you think you’ve cracked the case! Good luck, detective!

[@buildonbudgetph4662]

Awesome! Do you have a vid showing how to check, replace the 24 pin ic. Also the f1 fuse. Thanks!

[@pjthebiz]

Hi Kevin, thanks for your efforts, very helpful to a novice Motherboard Guru like me 🙂 I have a question for you. Assuming the motherboard is removed, which chip would I replace in the case of an "Ink Pad Needs a Service message". I guess the Status is stored in one of the Motherboard chips. Many thanks and keep up the good work, Pete 🙂

[@leeannbeebe9851]

Great Video! Thank you Kevin. I was trying to clean the prints heads of an Ecotank 7250 and when I plugged it in to test it, it seemed fine but 1/2 way through the test print the printer completely powered off and wouldn't turn back on. I think I may have gotten it too wet and fried it. Is a situation like this, is it possible to fix by changing the transistors?

[@allconstruction1]

same here i have a dead paper weight now 😢😢😢. What is the solution ?

[@MrMitchjs]

Kevin, i got ET-2760, and made the mistake of using cleaning flud and powering it back on, before all dry... the unit wont turn on, i pulled print head, 2 pins of the flex cable is burned. so my guess 1. need new print head (or just clean it and let it dry 100%) 2. need new flex cable (hard to find) 3. need to replace transistors on main board? since disconnecting the cable to the print heads, still no power up

[@kdr-ql7pz]

Also you can check diodes, fets, transistors, etc with your multimeter. Kevin's has multiple options where his dial is placed. On others, look for the diode icon. Select it and use the pos and neg leads to check for forward biasing. The dmm supplies the voltage too.

[@shirazigs]

Hi Kevin. Thanks for your amazing video. 😍I need help. I left a paper towel under the head and turned my printer on and did head cleaning, but it turned off by itself and never turned on again. Do you know where is the issue and how can I fix it? Thank you🙏🙏🙏

[@TheGraffitibaby]

You are awesome and so informative. Glad for your educational videos. Keep up the good work. Thank you

[@suryokencono2915]

cek harga alat testernya

[@smmackey8515]

Wow thanks. You are very good at instructional videos. Any chance you could do one on the the bios chip flasher? I noticed in this video you had one :). I’m in need of a tutorial on my ezpxpro.

[@BCHTechnologies]

Thanks. I don’t want to share it here in the public.

[@kdr-ql7pz]

This may help. The Epson has a 4 pin connector (cnxx) which is used for debugging. Only development boards have these interfaces populated. My hp has a jtag interface, and two servicing uc removed. Generally these are not necessarily for bios flashing. But recovery. Every embedded controls architecture is different and the bootloader may even be locked. Personally, I would look at the datasheet for your nonvolatile ram chip. Read it. See what flashing protocols are supported and research. Check Git, someone probably has a project somewhat related and try an Adriano or Raspberry pi interface. Who knows, but becareful. Flashing your bootloader with the wrong files and you will definitely be debugging or replacing the uc.

[@ludwigdeleon1124]

Hi do you have any video on how to check logic board and power supply for Epson L1300? Unit has no power at all

[@TheAdiposito]

Muchas gracias maestro Kevin BCH la mejor canción original 🤩, saludos desde Ecuador 👋

[@BCHTechnologies]

Thank you so much! I really appreciate your support, and I’m thrilled to hear you liked the video. Sending warm wishes to Ecuador!

[@ivanreyes-ct8fq]

Hi great video, can I ask you somethign. I got one epson l120 and the mainboard look the same. But here in México they say that if u get burn those 2 u will need to change the printhead to and the IC.

[@BCHTechnologies]

I will agree. If you burnt the transistors, you are likely needing a new printhead.

[@joshuahurst1099]

@@BCHTechnologies My transistors bun as soon as I turn on (just the power plug and display cable connected. Printhead is not connected, but it still burns the transistors, what else on the MB could be bad that causes it to burn the transistors? Thank you!!

[@joshuahurst1099]

If I take off the driver chip (E09A7418A) plug in power and display it powers up and stays powered up (appears to not burn out the transistors) so I will try now replacing the driver chip (E09A7418A) and seeing if that was the cause of the transistors getting burnt out - if not, then looks like its something else in the motherboard! :)

[@GurjVirdee]

Love your videos and explanations and repair. I have L5190 with burnt out DM301. It's SOT-523-3 and the marking is 5D. Could you tell me what the part actually is ? I can't find it anywhere online.

[@BCHTechnologies]

Thank you so much for subscribing and for your kind words! Every subscriber helps me get closer to my 100k goal, and your support means a lot. After 8 years, I’m only halfway there, but I’m dedicated to providing helpful content and answering subscriber questions as best I can. If I miss your comment or you need a quicker response, feel free to email me at [e-mail]. Regarding your question, I don’t have an L5190 here to confirm, but based on your description, the DM301 marked "5D" in an SOT-523-3 package is most likely a dual Schottky diode, commonly used in power management or signal processing. The exact specifications can vary depending on the manufacturer, which makes finding an exact replacement tricky. If you're feeling confident, you could power on the board, measure the current, and try using a similar diode, though this does come with some risk. If sourcing it online proves difficult, another option is to salvage the part from a donor board. Often, similar components from compatible models can do the trick. Let me know how it goes or if you have further questions-I’m happy to help. Thanks again for watching and commenting!

[@alexander0194]

Thanks for the video. It was very difficult to remove the NPN and PNP components. I think I damaged the circuit board. But both appeared to test fine, which makes me think the problem may be in the power supply. How do you test the power supply? There are 4 wires I think.

[@simplybs9311]

Well Kevin I just received one of these in the shop, same issue no power or display. The ribbon cables were disconnected from the display and scanner when I got it so I thought easy fix just reconnect them and we back in the game. Nope, I guess this is a common issue with this particular model, gonna check it further before thinking its the board but from what you say and what im seeing so far i may have to get a replacement. Also are the power packs similar in most of the models?

[@BCHTechnologies]

LOL. I got a repair work (false paper jam) which the PF scale fell off as soon as I open the case. Easy fix - I thought! Then I found out the scanner lamp burned out, and the printhead is dead. I got a 3-in-1... so far.

[@KoalaPlus777]

Can we use Epson printer hade and Mather bord in a big chassis to have a large wide print area? Please do this 🙏.

[@pereida12345]

Thank you for the detailed explanation

[@BCHTechnologies]

You are welcome!

[@XavierBrennetot]

Very interesting, but is there any way to reset ink counter directly here ? (on some HP printer there is just a cr2032, you remove it and expiration date for Cartridge just fixed) ?

[@BCHTechnologies]

Well, you are walking into the dark side. However, EcoTank doesn't need a ink counter. It has one but it is for "suggested ink volume" only. The printer won't stop you from printing.

[@103rdBlackVulture]

Greetings from Greece. Yesterday I, managed to fry my main board on an epson L365 after cleaning its print head. Some water got in, which I didn't notice, shorted the head and afterwards the mainboard :) lucky me ! I haven't yet got the board out cause I'm still pissed :). I'll check the TRs , but I believe that if the trs are shorted then I'm sure some tiny fuse will be off too. These two ICs you mentioned what type are there. Do they have to do with print head control ? Great videos btw 👍👍

[@BCHTechnologies]

The little fuse only controls the ink ejection. If your MB is fried, then the problem is more likely in those two transistors.

[@davidrivera5020]

Can you tell me what the voltage of the power supply should be? Also there is 4 wires should 3 out of the four show a number?

[@haydenjohnson3657]

42 v out is whqt i read on a forum

[@marolmoguez3378]

where can we buy that kind of tester for transistor ?

[@cocoioo]

Hello 👋 , I have questions for you I have the same printer, when I refilled the ink and clean the nozzle it just shut down and never turn on. I tested the power supply black(GND) and other 3 (40v,42v,0v) . Is the power supply looks ok? Or not?

[@tomaztercic9147]

hello, I had same problem. first i changed mosfets, turned on, for short time but then off. I wonder if there is other problem to look after?

[@BCHTechnologies]

Did you get a new printhead? Maybe the printhead is dead.

[@BCHTechnologies]

PS looks okay. It is likely you have a faulty printhead.

[@purplereignworldwide2681]

do you repair r2400 boards i have a couple i need repaired wondering if you could add fuse holders to f1 fuses that are blown on the boards i have

[@jkytown]

where do you purchase the power supply chip? MY husband removed the print head to clean a badly clogged black nozzle. After replacing it the printer came on then when dead a few minutes later.

[@BCHTechnologies]

Hey, thanks so much for subscribing and supporting the channel! I really appreciate it - every subscriber helps me get closer to that 100k goal. I’ve been working at this for 8 years and I’m about halfway there. Your engagement really keeps me motivated to keep creating helpful content and answering questions. It sounds like your printer issue is related to burnt transistors on the mainboard, which is pretty common after head cleaning or replacement. You can find the power supply chip or transistors at [bchtechnologies.com](bchtechnologies.com). Just look for the large number printed on the transistor or MOSFET - it will usually be something like "Axxx." Enter that number in the search bar on the site, and it should bring up the right part for you. I know dealing with these kinds of issues can be frustrating. If you need more detailed help or can’t find the part, feel free to email me directly at [e-mail]. I try to respond to subscriber comments within 48 hours, but with the backlog, sometimes it can take a bit longer. Thanks again for watching and being part of the community - I really appreciate it!

[@ellieannmarcano4578]

Hi can u plz give the list of the name of printers that is compatible with the et2750 motherboard

[@kevinvarela3027]

Would love to see you working on an Epson F2000

[@BCHTechnologies]

Thanks. I don't have the time and space right now. The warehouse is overflowing.

[@parvaisfrederic1274]

hello, when you change the a2222 and c6144 transistors, the SG numbers below must be the same? I have an a2222 SG 2b2 I can put an a2222 SG 7f5. THANKS.

[@kdr-ql7pz]

Also, Sanyo was acquired NY osemi.

[@kdr-ql7pz]

And yes, the sg is a replacement. The others are not being newly produced anymore

[@neddy1287]

What board fit Epson et2720 having issues finding it as it powers on then shortly after error 100016 as the scanner does seem to work with light coming through but with noises like motor trying to move even at the end of the guide. There's no dirt or grit in the guide. Is this a board issue or scanner issue

[@rainbowclouds]

Do you know where the fuses are in a CE59 main board (xp-432) and eventually how to test it ?

[@dermarius87]

Thanks so much, You've made my day 🎉🥰

[@mehmetozata5691]

hi, a222 and c6144 have been changed, the problem still persists

[@SlayWithAnais]

I have been waiting for this piece in this website for ever. They still haven’t restocked does anyone know where else I can get the mother board

[@AbedAlrhman]

Hello my friend, I have a problem with the Epson printer, it does not come out colors when printing, they tell me that it is from the board, what is the solution?

[@handmadechiccrafts3463]

Hello, I have an epson L1800 and the power on the back does come on but the power button doesn’t so nothing works. Can you help?

[@thelmawallace1253]

hin my name is Thelma i have a ? im new to this dtf my et-8550 doesnt pull ink to the waste tank and dont want to print how can i fix this problem thank u n advance

[@ChanvibolPen]

Hello! Can you share some experience about Epson L1800? It is original. But technician told me " your printer got burn mainboard and pass power throgh to printer head". This happen while I start cleaned by using some acohol with water.Then I Put it in ordered and connect to power supply and started power on by put it alone. But the technician told me that " Your printer got burn by overload power" . Now I already repaired main board by my knowledge and the mainboard work well. But I want to ask you can I insert the old printer head into printer L1800 again? My Epson L1800 It is work less than a year of total using it. It just new

[@kuripotech461]

Is it mandatory that if you replace the 2 transistors you should also replace the 24 pin micro controller? Thanks

[@BCHTechnologies]

No

[@kuripotech461]

@@BCHTechnologies sir then based on your experience how would you know if the 24 pin power IC is damage? Thank you sir.

[@kdr-ql7pz]

Find your depopulaed debugging connector for a start. Reading datasets also helps if you can understand what they say. However, oem boards. Do not have chip manufacturer data printed on them. Generally found in a high volume production environment.

[@fixitdude8121]

Great video, very helpful. I have a similar problem with a Epson WF-3620. All of a sudden one day when I sent a print command to the printer from my laptop, I heard a faint click noise from the printer and a got an error message on laptop. Printer had shut down. Pushing power button on control panel and trying to reset by unplug, hold power button did not work. I tested the power adapter and can measure 42VDC at power adapter connection CN501 at motherboard. I tested the control panel power button with ohmmeter and it is functional. But there is no power getting from to either terminal of the power button. Do you think this is a problem with the motherboard? If yes, how do I isolate the problem? or any other suggestions? Note: the printer is about 8 years old and has seen only moderate use. Thank-you very much for any help

[@BCHTechnologies]

It sounds like it. There are only three things needed for a power-on: Power supply (working), MB, and LCD panel. The LCD panel is hardly the problem, so I will vote for MB.

[@laurenlabrousse1098]

Love your videos

[@BCHTechnologies]

Thank you so much! I'm glad you enjoy them!

[@steamy1225]

Just watched your video for the 2nd time . great info. Now, i have a Epson XP-440 . Head was clogged . Cleaned out. reinstalled. and power came on, started charging the ink in the head and then power went off. Never came back on no matter what i did. watched you video again . Today i replaced the 2 transistors with new . reconnected MB back in printer . head is not in . Power switch lit up for one second and then no more power again. I don't know if something else besides the head is bad or not but it seems to affect the power issue. Any Ideas? Thanks.

[@joshuahurst1099]

Same here. If I leave them out, the board with just the display cable and power plug it turns on. If I put the transistors in, it powers on 1 second, then off and the transistors are burnt again. so something else on the MB is bad since it fries them with nothing else connected.

[@nollywood6637]

Hello Sir. Nice video

[@Via4esla]

Привет. Твои видео очень хорошие. Продолжайте эту тему. Очень интересно. Привет из Литвы.

[@BCHTechnologies]

Большое спасибо!

[@nollywood6637]

Hello i.have an epson L3169 and its writting scn ft mode. what does it mean sir.

[@jetlacoste]

Wish i could find a video on how to get to the mother board on an epson 1400 and replace these transistors :(

[@Pakrat42]

I tested my transistors and replaced them, the printer worked for a total of 30 minutes and quit again. I tested the new transistors and they had died just like the originals. What could be causing these to blow out like that?

[@mikejok3r498]

Very good video!!!

[@marcinmarcin5093]

Very useful.

[@BCHTechnologies]

Thanks!

[@mariallknowing9273]

Definitely over my skill set. I can do up to removing all the parts, but the cutting and soldering are definitely past my skill level. 😪

[@marypoppins7099]

Can you assist with Epson P600

[@BCHTechnologies]

Sorry, I can't. Too much stuff to do and too little time.

[@salihbayraktar1903]

thank you brader

[@jcmoney11111]

Yes go deeper. More vids😊

[@manuelpicazo8969]

Are you in California

[@BCHTechnologies]

North Carolina

[@zelalemfeyissa8236]

THANKS SO MUCH

[@BCHTechnologies]

No worries! Happy to help you get that printer back in action!

[@donibiele.f.5589]

Working with et 2650 Thx

[@melissabelton9180]

I can not find this motherboard anywhere to purchase

[@BCHTechnologies]

We don't have all the mother boards. Most hot models are sold out within hours.

[@wilferossa5220]

Friend . Do you have board. I need 1

[@isaisa6558]

Sir, I am from Nigeria my Epson L850 is not directed on Computer I try all the possible but I am still facing the same problem.......please Sir I need your help. I can pay if necessary.

[@delorisblue7606]

Kevin I like your videos. I have an epson ET-2750 after cleaning clogged print heads, I get Scanner error 02. The cables are connected correctly, but the scanner error 02 100016 still comes on. What else can I do? Is there a sensor or something else that need cleaning? Thanks in advance

[@BCHTechnologies]

Does the lamp come on? When you start the printer, the lamp will be turned on and it will scan a little strip on the cover. The signal get sent to the printer. If the printer doesn't get this signal, it will think the scanner is broken.

[@Atarilloll]

My a2222 and c6144 are burned, after change printer starts for 2s and again burned, what kann by more?

[@joshuahurst1099]

same!

[@Atarilloll]

@@joshuahurst1099 answer is burned e09a92ga or e09a7418a, must be changed both Transistor and Chip

[@joshuahurst1099]

@@Atarilloll Thank you! I just removed the E09A7418A and power up and it did not burn transistors, so looks like that should be it - I'll keep you posted - thanks again!

[@atasteofsteph]

Thank you😒 but this printer has been trash for me I tried to use it twice both times it jammed and now won't power up

[@BCHTechnologies]

I’m sorry to hear that! It sounds frustrating. Sometimes these printers can be a real hassle. If you give it another try, I hope it works better for you!

[@MarioMotoVlog]

How reset HP304 for hp2620?

[@BCHTechnologies]

You don't need to reset it.

[@donibiele.f.5589]

Work Thx

[@laaroussirachid1755]

Peace be upon you.. He has an Epson L1800. I cleaned his head and his head and the work has been turned off. I hope you can help me and where do I start from, thank you

[@purushothamj145]

super

[@niknasrul7186]

wow. catchy song

[@BCHTechnologies]

Thanks! If the printer won't power up, at least the song will keep things lively!

[@mdsalimanzar3761]

0

[@jeanfrancoisbottreau-b9l]

super