Laptop Motherboard Repair: Troubleshooting B+, 19V, 3.3V, & 5V Power Rails | Voltage Diagnosis Guide

[@eduardoaramburu23]

DUDE; YOU ARE AMAZINGLY CLEAR TO EXPLAIN THINGS. CONTINUE LIKE THIS!

[@electronicsrepairbasics_erb]

Thank you so much! I’m really happy to hear that you find my explanations clear. I’ll definitely keep it up! Appreciate the support

[@mrta.]

Teacher, the information you give is very important, very useful, continue to make such videos, I am looking forward to your advanced videos, I will follow you, teacher.😊

[@electronicsrepairbasics_erb]

Thank you so much for your kind words and support! I'm glad you find the information helpful. I’m excited to share more advanced content soon, so stay tuned! Your feedback motivates me to keep delivering valuable content.

[@gboyabraham568]

Nice one he make me understand my b+ is ok in sio

[@briansewart5885]

That would have to be the best video I have ever seen. I have never seen anything explained so well before, THANK YOU!!!!!

[@electronicsrepairbasics_erb]

Wow, thanks!

[@rosetaylor-nl1ol]

You've helped me a lot in understanding all the components in a laptop motherboard. May God bless you and reward you abundantly for your goodness and kindness. I always want to support this channel with little I have but I'm in Nigeria, We don't have a PayPal account to send money abroad.

[@electronicsrepairbasics_erb]

Thank you so much for your kind words and support! I'm really glad the videos have been helpful to you. Your appreciation means a lot to me, and it’s the best kind of support. Don't worry about donations-just watching, liking, and sharing the content is more than enough to keep the channel going. Wishing you all the best from here. Thank you brother.

[@aboozuhayrah]

Sir you are great indeed,the way you teach is more any college.. only that when am trying to test second channel and third channel am just finding 19 v,where am i missing so that i can find 3.3 vots and 5 vots ,but am using Dell Laptop motherboard

[@electronicsrepairbasics_erb]

I’m glad you find the teaching helpful. Regarding your issue, if you're only finding 19V, it might be that the 3.3V and 5V power rails are not being activated due to a fault or missing signal. I recommend checking the power-on sequence and ensuring that the enable signals for those power rails are present. If you need further guidance, feel free to reach out with more details, and I'll be happy to assist

[@Vindix007]

Excellent tutorial. Greetings from Brazil.

[@electronicsrepairbasics_erb]

Glad you liked it!

[@tanguykpofoessi8074]

Merci pour cet Partage C'est d'une grande Utilité ❤️❤️

[@electronicsrepairbasics_erb]

Thank you so much! I’m glad you found it useful. Your support means a lot

[@terrence9477]

You are doing great, thank you very much

[@electronicsrepairbasics_erb]

Thank you so much for the support! I’m happy to know you're enjoying the content. I appreciate your feedback, and I’ll keep working hard to bring you more valuable lessons!

[@johnmaloma7623]

Wow I'm impressed this guy is a good teacher

[@electronicsrepairbasics_erb]

I'm glad to hear you find the tutorials helpful. I always strive to provide clear and informative content, and your feedback motivates me to keep improving. Stay tuned for more.

[@johnmaloma7623]

@@electronicsrepairbasics_erb so please advise i need a good thermal camera

[@electronicsrepairbasics_erb]

Thank you for your comment. When it comes to thermal cameras, a few highly recommended options include the FLIR ONE Pro for mobile devices, or the Seek Thermal Compact Pro, both known for their accuracy and portability. If you're looking for something more advanced, the FLIR E6-XT is excellent for detailed diagnostics. Let me know if you'd like more specific recommendations based on your needs

[@johnmaloma7623]

@@electronicsrepairbasics_erb i. Would like to use for laptops motherboard repair services, I have been advised to use UTI-260B Thermal camera that includes macrolens

[@electronicsrepairbasics_erb]

The UTI-260B Thermal Camera is a great tool for laptop motherboard repair, as it allows for precise thermal imaging, making it easier to detect overheating components or shorts. It's definitely a good investment for anyone involved in detailed electronic diagnostics. If you need more insights or recommendations on using it effectively, feel free to reach out!

[@carloslicata8262]

Hi, very important, very useful... Excellent tutorial. thank you very much. best regards from Mar del Plata, Argentina.

[@electronicsrepairbasics_erb]

Hi, thank you so much for your kind words! I’m glad you found the tutorial useful and important. Best regards to you. If you ever have any questions or suggestions, feel free to reach out!"

[@dzabakwesi2213]

Excellent video

[@electronicsrepairbasics_erb]

Thanks for the visit

[@francismannion7075]

Sir, thank you for an excellent lesson.

[@electronicsrepairbasics_erb]

Thank you for your kind words! I’m really glad you found the lesson helpful. If you have any questions or suggestions for future content, feel free to let me know

[@acalat]

Thanks for your support Please note that these 19 inductors you mentioned in old laptop boards.

[@electronicsrepairbasics_erb]

You're very welcome! I appreciate your attention to detail. Let's say VIN . If you have any more questions or need clarification, feel free to ask

[@user-fq9pi2lq4x]

Great content

[@electronicsrepairbasics_erb]

Thank you so much! I’m glad you enjoyed the content. Stay tuned for more valuable videos, and feel free to share any suggestions or topics you’d like to see in the future!

[@sadmad1188]

and am here too teacher like i said to u in the other channel arabic ur voice very similair for me 😁😁 so am big fan for u and learn so much good information for laptop repair so please don't stop 💪💪👌

[@electronicsrepairbasics_erb]

Thank you so much for your continued support! I'm really glad you're finding the content helpful on both channels. Your encouragement means a lot to me, and I’ll definitely keep sharing more useful information on laptop repair. Stay tuned for more.

[@nunhlimapeecee]

new Subcriber from Mizoram🖐, very informative explanation👍

[@electronicsrepairbasics_erb]

Thank you and welcome to the channel! I’m glad you found the explanation informative. If you have any questions or suggestions for future content, feel free to share. I appreciate your support

[@ElectroTechnics-g4s]

A nice video, keep inspiring, educate and share your skills, continue the good work with faith.

[@electronicsrepairbasics_erb]

Thank you! You too!

[@SVR_Properties]

Sir,Thank you for your valuable information on voltages in Laptop Mother Board

[@electronicsrepairbasics_erb]

You are most welcome

[@JahsonElectronics]

Great information But I have a question What happens to 19v when pc is running on battery?

[@electronicsrepairbasics_erb]

Great question! When the PC is running on battery, the 19V from the external power supply is no longer in use. Instead, the battery's voltage (typically between 11V and 15V, depending on the battery type) powers the system. The laptop's internal power management system adjusts and regulates this voltage to the required levels for various components. Let me know if you need more details.

[@lateefalan]

This is excellent. Thank you bro.

[@electronicsrepairbasics_erb]

You're very welcome

[@DavidBourne-bd4vv]

Excellent Bro :)

[@electronicsrepairbasics_erb]

Thank you so much!

[@ynahit3746]

Thanks for the valuable information.

[@electronicsrepairbasics_erb]

Glad it was helpful!

[@romymallari9133]

Thanks for this wonderful video tutorial. Btw, where do you get your schematic diagram?

[@electronicsrepairbasics_erb]

Thank you! I’m glad you found the tutorial helpful. For the schematic diagrams, you will find it in my patreon page. Let me know if you need more details

[@romymallari9133]

@@electronicsrepairbasics_erb I'm looking for free schematics though

[@electronicsrepairbasics_erb]

You are very welcome

[@gothandaramanimraman4131]

Thank you bro

[@electronicsrepairbasics_erb]

Any time

[@maths_infos2182]

Thanks bro

[@electronicsrepairbasics_erb]

@maths_infos2182 thank you, always ready, Good

[@maths_infos2182]

@@electronicsrepairbasics_erb i am waiting your vidéos always .)

[@electronicsrepairbasics_erb]

Sure, stay tuned

[@onaolapomarvellous8835]

Thanks boss

[@electronicsrepairbasics_erb]

You're very welcome! Glad you found it helpful. Let me know if you need anything else or have any more questions!

[@senzothebusheletronics8913]

Teacher i have a acer 5750 with a Brocken screen can i replace this model of the screen LP156WH2 with LP 156WH4

[@electronicsrepairbasics_erb]

Yes, you can likely replace the LP156WH2 with the LP156WH4 as both screens have similar specifications, including a 15.6" size, 1366x768 resolution, and 40-pin connector. However, it's always a good idea to double-check the mounting brackets and connector position to ensure compatibility. If both screens share the same specs, the replacement should work without any issues

[@tunkunrunk]

how to know which parts of the motherboard is for 19v or 3.3v or 5v ? you can't tell that at glance , and sometimes all motherboards don't have their schematics online . Some websites ask you to create an account before , but once it's done they give you no access to the schematics if you don't pay

[@samsongithinji1631]

I was troubleshooting a mobile PCB and wonders if I can use continuity mode to locate power line

[@electronicsrepairbasics_erb]

Yes, you can use continuity mode to check if a power line is intact, but it's important to note that continuity mode alone won't give you the full picture of the power line's condition. Continuity mode is useful for detecting short circuits or broken connections on a PCB, but to accurately diagnose a power line, you should also check the voltage using a multimeter. This way, you'll know whether the power line is delivering the correct voltage. Be cautious when probing, especially near sensitive components, to avoid causing further damage. Good luck

[@SamDaniel-p2j]

Thank you Boss.please my Hp laptop one of the button (f12) have a red light on it,and caps lock button when ever i press it ,it brings blue light.Sir what could be the problem.

[@electronicsrepairbasics_erb]

You're welcome! The red light on the F12 key usually indicates that the Wi-Fi is turned off. You can try pressing the F12 key to toggle your Wi-Fi on and off. As for the blue light on the Caps Lock key, it typically signals that Caps Lock is activated, meaning all letters will be typed in uppercase. If these indicators are behaving unusually or affecting your laptop's performance, a driver update might help. Feel free to reach out if you need further assistance

[@SamDaniel-p2j]

@@electronicsrepairbasics_erb thank you sir

[@electronicsrepairbasics_erb]

You are very welcome

[@ndjanachristianmatthieu9219]

you are the best

[@SobehTechTips]

Excellent

[@electronicsrepairbasics_erb]

Thanks

[@amirhamzah2256]

And for the second thing, would it be possible if you make a video about which voltage is used for certain components. For example, 1.5v/1.35v is used for ram. And so the other. Because I just only know voltage for ram only. but not the other components😁😅

[@electronicsrepairbasics_erb]

Thank you for your suggestion and for watching the video. I’m glad to hear that you're interested in learning more. That's a great topic idea! Different components do indeed use specific voltages, and understanding them can really help with troubleshooting. For example, CPUs usually use voltages around 1.0-1.3V, GPUs have their own ranges, and power rails for various sections of the motherboard vary too. I’ll definitely consider making a video that dives into the typical voltages used for different components. Stay tuned, and thanks again for your input.

[@amirhamzah2256]

@@electronicsrepairbasics_erb Wahhh. thank you brother for that 😄

[@electronicsrepairbasics_erb]

My pleasure

[@amirhamzah2256]

Thank you for the video. Very informative video for newbie like me😄. But I want to know, where do you get the motherboard schematic ? or just by google motherboard model ?😅

[@electronicsrepairbasics_erb]

I'm glad you found the video informative. To answer your question, motherboard schematics can sometimes be found through a Google search by using the specific motherboard model. However, they aren't always readily available to the public, as many manufacturers keep them private. There are also specialized forums or platforms where technicians share or sell schematics. It can take a bit of searching, but these resources are incredibly helpful for in-depth repairs. Keep learning, and feel free to ask more questions

[@amirhamzah2256]

@@electronicsrepairbasics_erb i see. alright😃

[@electronicsrepairbasics_erb]

Nice

[@pcastuce3166]

Waouuu you are amazing thank you

[@electronicsrepairbasics_erb]

You're welcome

[@pcastuce3166]

@@electronicsrepairbasics_erb I have basic knowledge of computer repair I would like to deepen my knowledge and learn more about computer repair, I am ready to give everything to train well, Is it possible to take lessons with you?

[@Goda00100]

،Thank you very much

[@electronicsrepairbasics_erb]

You're very welcome! I'm happy to help. If you have any more questions or need further assistance, feel free to ask

[@Commando11226]

Sir i am from Pakistan Please make a video about 12v battery charger circuit and their parts components please

[@electronicsrepairbasics_erb]

Thank you for your suggestion! A video on a 12V battery charger circuit and its components sounds like a great idea. I'll definitely add it to my content plan. Stay tuned for more electronics tutorials coming soon, and feel free to share any other topics you'd like me to cover! Your feedback is always appreciated.

[@Commando11226]

@@electronicsrepairbasics_erb Ok Thanks actually our country depends on Solar system and acid battery large amount of Soler charger are made her but their quality are bad.

[@electronicsrepairbasics_erb]

Unfortunately, poor quality solar chargers can limit their effectiveness and lifespan. I would recommend investing in well-reviewed and trusted brands, or if possible, learning more about component quality and building or modifying the chargers yourself for better efficiency. I’m planning to create more content around such topics to help improve understanding and usage of solar power solutions. Stay tuned

[@OkwalingaYolam]

But how do I pay coz I don't have a bank account?

[@electronicsrepairbasics_erb]

Feel free to ask

[@jersonmontilla6874]

niCe amazing

[@electronicsrepairbasics_erb]

Thank you! Cheers!

[@Panyatimay]

❤❤❤❤❤

[@nounouberbez]

Mon anglais et mauvais 😂 mais il explique très bien 👍 pro

[@eyelon2216]

use good quality microphone 🎤 🎤

[@electronicsrepairbasics_erb]

Thank you for the feedback! I appreciate your suggestion and will definitely look into improving the audio quality for a better viewing experience. Your support helps me continue to improve

[@eyelon2216]

please speak loud and clear

[@electronicsrepairbasics_erb]

I’ll make sure to improve the audio clarity in future videos to ensure a better experience. I appreciate your support and understanding

[@irfanuk9391]

​@@electronicsrepairbasics_erb don't forget