Unlock your full potential with my Mentorship Experience. This is not just a subscription; it's an elite pathway to mastering advanced repair techniques, troubleshooting skills, and personalized guidance tailored specifically to your goals. Please note: spots are limited, so secure your place today to gain priority access and take your skills to the next level - The link on the top of the description
from indonesia jakarta. For many years, finally i can see the bridge pq51 and pq52 is connect and the voltage is 8v... before, i dont know if they are connected. thank you sir.. You are the best, i hope this channel to be NUMBER UNO in the world.
Thank you so much for your kind words and support from Jakarta! I'm really glad the video helped you understand the connection between PQ51 and PQ52 and the voltage. Your feedback means a lot to me, and I truly appreciate your encouragement. I'll continue working hard to bring valuable content to the channel. Thanks again, and let's aim for number one together! 🙌🌍. Thank you Bro
Hello. From Mar del Plata, Argentina. I want to tell you that this is actually a true Masterclass. Never so well explained in detail and with a great will to teach. I have seen many videos on various channels that have taught me a lot, but here I find everything in the process from when the signal is generated, where it passes and who receives it and why they receive it. A very, very good tutorial for beginners and some advanced users. Greetings.
Thank you so much for your thoughtful and encouraging words. I'm truly glad you found the tutorial detailed and helpful. It's my goal to make the learning process as clear and comprehensive as possible. If you ever have more questions or suggestions for future content, feel free to reach out. Thanks again for your support and kind feedback.
Thank you so much for your kind words. I'm really glad to hear that the video was clear and easy to understand, even in another language. Your support means a lot, and I'm grateful for your encouragement. May God bless you as well 🙏
@@electronicsrepairbasics_erb Sir the power supply without charging or how it works through 12 volts came from the baterry..? New subscriber sir .thanks...
Thank you for subscribing and for your question. Laptops are designed to work with a range of voltages, and the internal power management system converts the 12V from the battery to the required voltages for different components. This ensures that even without direct charging, the laptop can function properly using the battery's power. If you have more questions, feel free to ask
One of the best most complete explanation of pc laptop power circuits and sequence online. Teach a man to fish and you feed him for life. Well done. Very well done.
I'm really glad to hear that you found the lesson clear and helpful. Your feedback means a lot and motivates me to keep sharing more. If you ever have any further questions or need more explanations, feel free to reach out
Thank you so much for your very informative and educational videos. I have learned a lot and I look forward to watching many more. Cheers from Scotland.👍
Thank you for your thoughtful message. I'm really glad to hear the videos have been helpful to you. I appreciate your support and look forward to continuing this learning journey together. Cheers to you from here as well. 👍
all i have been learning this while without understanding, you have thought me in less than an hour thank you so much, all i have to do now is to practice what i have learn duo i dont have the equipment's i need, i have to start buying them one by one. thank you so so much.
Thank you for your kind words. I’m thrilled to hear that you found the video helpful and that it clarified things for you. Practice is key, and I encourage you to take your time in acquiring the necessary equipment. If you have any questions along the way, feel free to reach out. Best of luck on your learning journey
Thank you so much for your encouraging words! I'm glad you found the video informative and clear. I’ll keep striving to deliver helpful content. Your support means a lot, wishing you all the best as well
The best I've seen ...... One question, how can the laptop work on 19v as well as 12v from battery being 7v of difference ? or in other words, why we have a 19v charger instead of a 12v charger if 12v is coming from the battery ?
Very good question. Laptops often have built-in voltage regulators that can accept a range of input voltages. This means they can efficiently convert different input voltages, like 12V or 19V, to the necessary operating voltage required by the internal components. The power management system within the laptop ensures that it operates safely and effectively regardless of slight variations in input voltage. If you have more questions or need further clarification, feel free to ask. Thank you
Laptops typically use a 19V charger instead of a 12V charger due to the need for adequate voltage to charge lithium-ion batteries effectively. A standard lithium-ion cell has a nominal voltage of about 3.7V, so three in series (3S configuration) yield approximately 11.1V to 12.6V when fully charged. A 12V supply is insufficient for charging, as it doesn't account for voltage drops in the charging circuitry 1 .Using a 19V charger provides a necessary margin for the charging electronics, ensuring efficient operation and compatibility with various battery configurations
I loved your explanation. It's very articulated and precise. Maybe you can make a video on how to fix the issues occurring on the components you mentioned. Keep up the good work.
Wow, thank you! I’m truly humbled by your support. I’m glad you found the video helpful, and I’ll keep working hard to provide valuable content. Stay tuned for more, and thanks again!
Excellent video. I thoroughly enjoyed it. Wonderful explanation and properly paced. I am currently working on a hp 17-x115dx laptop that does not charge and also displays battery not detected. This information you've shared here will prove to be most useful. Thanks for sharing and looking forward to more videos like these...God bless
I’m glad you found the video helpful and that the explanation was clear. Regarding your HP 17-x115dx laptop, the charging and "battery not detected" issue could be related to a faulty charging IC, battery connectors, or even the BIOS. I’m happy to hear that the information shared might assist you in your repair. Stay tuned for more videos, and feel free to reach out if you have any more questions, best of luck with your repair.
Thank you sir for beautiful and clear explanation about the defferent signals and voltages in every circuit path.. thank you thank you..your the best teacher ..GOD BLESS...
very detailed video , it will require a lot of practice with various motherboards and a multimeter to master it . a piece of advice for beginners like me , don't just watch the video and think you got it , practice a lot .
Thank you so much Sir. God bless you, I'm here Everytime checking for your new video. Your channel is top-notch when it comes to Motherboard repair and teachings. May God reward you abundantly for sharing this wonderful video with us. Love from West Africa
Thank you for your kind feedback. I'm glad to hear that the explanation and pace made it easy to understand. I’ll continue striving to provide clear and helpful content. Appreciate your support
Thanks for all you do. But please can you help with latest boards like 8th generation because it seems their reading differs from the old boards. Thanks
Can I give you an advice sir? It is better to say " to check if the voltage is present " or " ...if the current can reach to this point " the voltage doesn't travel but can be " applied " or "presented" because it is the cause. The current runs in the copper wire because it the the effect. I used to do the same verbal mistake. From UK with love
Sir, it is a wonderful video, thank you very much. Whatever I say is more or less clear and understandable. I will continue to watch you with curiosity and admiration.🤩
Thank you so much for your kind words. Your support and enthusiasm mean a lot to me, and I look forward to sharing more content with you. Stay tuned for more.
Thank you so much for your kind words and for subscribing. I'm glad you found the video helpful. Welcome to the community, and I look forward to sharing more content that will continue to support your learning. God bless you too.
Merci beaucoup pour vos mots aimables. Je suis ravi que la vidéo vous ait été utile. Que Dieu vous bénisse également. Je continuerai à partager plus de contenu instructif pour vous et tous ceux qui souhaitent apprendre.
I appreciate the suggestion. I will definitely consider making a video on how to use a DC power supply to inject voltage on a PCB. Stay tuned, and feel free to reach out if you have any other ideas or questions. Thanks for your support
I have been watching your videos but there is this particular video am really interested but I have not seen it within your channel. It's about DELL laptop the problem is when I connect the charger and press the power button, the adapter goes off, I have been facing this challenge on different dell machines but haven't been able to solve it yet. Am looking forward to hear from you soon if possible. Thank You Sir,
Thank you for your support and for enjoying the videos. I understand how useful schematics can be for repairs. Feel free to reach out if you have any other questions or need guidance in your repairs!
Thank you for your kind words. I’m glad you found the video helpful. I haven’t created a specific block diagram for motherboards with a PD (Power Delivery) controller yet, but it’s a great suggestion. I’ll definitely consider making one in the future. Stay tuned, and feel free to reach out with any other requests
Thanks for posting...really informative and easy to follow, great teaching. Which computer does this motherbord you are using come from? Are most motherboards roughly similar in design?
i give you a synthesis (translate it's french) : SIGNAUX : - [ ] VC IN : 3,2 V - [ ] ACok : 3v En alternatif - [ ] ON OFF : 2,9 V - [ ] LID SW : 3,1 V - [ ] WL PWREN EC : power enable 3,2 V - [ ] RMSRST = 3,2 Volt (vérifier power distribution switch : protege source alimentation et court circuit) - [ ] DRAMRST : 1,35 V (ligne droite) voltage dépend génération ram DDR - [ ] RTCRST : 3,3V - [ ] SLP S5= 3,3V ou oscilloscope ? - [ ] VTR : 3,3V - [ ] SIO-PWRON-L = 3V puis 0 V ok - [ ] ECRST ; 3V - [ ] PLTRST : 3,3V - [ ] PWRBTN (DNBSWON) : 3,3V PASSE À ZÉRO PUIS 3 VOLT - [ ] VBAT (pc portable) : 3V - [ ] PLTRST : 3,3V ou oscilloscope (il passe très rapidement de 0 V à 3,3V) ce signal est activé seulement quelques Msecondes - [ ] PSIN = 3 V - [ ] PSOUT : 3,3 V - [ ] PSON = 5 V puis 0 V ok - [ ] SLP-S3 = 3V - [ ] PS OUT = Alternance barre horizontale haut et bas (peut être faut t-il allumer la carte et l’éteindre pour l’alternance ?) - [ ] DSW-EN = 3V SIO Dans l’ordre : - [ ] 1) PS-3VSB (le 3 volt stand by) - [ ] 2) Pwrbtn (3V puis 0 ok) - [ ] 3) Rsmrst - [ ] 4) SIO-PWRON-L (3V puis 0 ok) : il signifie au PCH je suis complètement allumé - [ ] 5) SLPS3-L (SUSB): PCH vers SIO : 3V puis 0 ok - [ ] 6) PSON-L : 5V puis 0 V ok : signal part de SIO vers ATX (cable vert) - [ ] 7) VCC (VIN): 0 puis 3V ok - [ ] 8) PWRGD (ATXPG) : 0 puis 3V ok - [ ] 9 ) PWRGD : 0 puis 3V ok (SIO vers PCH) SIGNAL PCH - [ ] 1) CPU-PWROK (uncorepwrgood) : 0 puis 3V (PCH vers CPU) SIGNAL VRM - [ ] 1) VR Ready (0 V puis monte voltage ?) vers pch (sys-pwrok) SIO - [ ] 13) PLTRST(LRESET) : 3V puis 0 V ok - [ ] 14) SIO-PCIRST3-L (0v puis 3V) SIO vers PCIEX16 (connecteur) et - [ ] 15) SIO-PCIRST1-L (PCI-E XIA et XIAB) 0V puis 3V ok - [ ] 16) SIO-PCIRST2-L (SIO VERS CPU) 0 V puis 3V ok PUCE DE CHARGE - [ ] Pin ACOK : 2,5V - [ ] Pin ACDET : 2,5 V - [ ] CMSRC (common source) : si elle détecte une tension non approprié, la puce coupe l’arrivée avant le premier mosfet - [ ] VCC - [ ] REGN : 6V - [ ] CMSSRC : 19 V - [ ] ACDRV : 24V (voltage chargeur + 6V : contrôle les pattes du mosfet) - [ ] ACN : 19V (sortie shunt resistor) : calculer l’intensité qui rentre dans la carte mère : si il y a - [ ] ACP : 19V (entrée shunt resistor) - [ ] EN1 : 2,2 kOhm LE PCH est la plus grosse puce ci-dessus, il communique avec le bios Egalement Parfois un il y a un bios pour le PCH et 1 bios pour la puce SIO Il faut que les 5 tensions soient présentes : 3,3 VSUS (après avoir appuyé bouton démarrage,) 1,05 VSUS (Apres…), 1,8 VSUS (Apres …), 1,5 Vous (après) 3VAlways; +RTCVCC (qui vient de la pile CMOS traversant une diode) , LFRAME ou LPCFRAME (affichage) Le PCH est rebillé : si il est un peu dessouder certaines fonctions ne seront pas actives La patte du Bios Chip select se mesure avec l’oscilloscope.et la patte read (si il ne passe rient sur cette patte le bios est le problème) SIGNAUX - [ ] SLP S3, SLP S4 - [ ] PowerButton (vérifier en priorité) - [ ] RsmRst (vérifier en priorité) signaux provenant de la puce SIO - [ ] Pour les fréquence Hertz du RTC et clock il faudra un oscilloscope (25 Mhz et 32,7 Khz RTC avec le CMOS). Si on les voit pas sur la carte, ils seront à l’intérieur du PCH - [ ] Il envoie un signal 33 mhz à la puce SIO (oscilloscope) - [ ] Il envoie le signal frame à la puce SIO (oscilloscope) - [ ] PLTRST (Plt reset, se retrouve sur le connecteur wifi pin 22 avec 3 V ) : signal envoyé du PCH vers le processeur pour le réinitialiser (la carte sera démarrée également) - [ ] Signal RTCRST (provenant de la pile CMOS) - [ ] Signal PwrGD et SysPwrGd (à vérifier avant le PLTRST) - [ ] La puce clock - [ ] SM BUS CLOCK et SM BUS DATA : SMBCLK SMBDAT (signaux pour la ram à vérifier au niveau de la puce SIO) - [ ] Frame (oscilloscope au niveau de la puce SIO)
Thank you for your synthesis of the signals. It provides a comprehensive overview of the voltage checks across various points on the motherboard. Your analysis of key signals like VC IN, ACOK, ON/OFF, and the reset signals (RSMRST, PLTRST, DRAMRST) is quite thorough. Based on these measurements, it seems you're systematically checking the critical voltages and their behavior, which is excellent for diagnosing power issues. For some signals like PLTRST (Platform Reset) that pass quickly from 0V to 3.3V, using an oscilloscope would indeed provide better visibility, as you've mentioned. The transient nature of these signals makes them difficult to capture with a multimeter alone. Your examination of the charging IC and power signals is also well-structured. If the charging IC, especially ACDRV and CMSRC, is showing unusual values, further testing or replacement of the MOSFETs and surrounding components may be needed. Overall, your approach is methodical and seems to cover all necessary voltage and signal checks. If you require any further clarification or assistance in diagnosing a specific issue, feel free to ask. Keep up the great work!
Thank you for your kind words. I’m glad you found the lesson helpful. I appreciate your suggestion, and I’ll definitely consider making a video covering the next voltages for components like the CPU, RAM, BIOS, and power buttons. Stay tuned for more content.
Thank you very much for teaching us in a way that is easy for all of us. Looking forward to your next videos, because you teaching method is unique...!
I’m truly glad to hear that my teaching method resonates with you and makes the content easy to understand. Your support means a lot, and I’m excited to share more videos with you soon. Stay tuned.
I'm truly grateful, and I'm glad the content is helping both clients and fellow computer technicians. Your feedback motivates me to keep sharing more valuable information. Thanks again
Thank you so much for your support 🙏❤. I'm glad you're finding the content helpful. If you ever have any questions or need further clarification, feel free to ask. Stay tuned for more valuable content.
hello , first thanks for the excellent videos sir but the laptop i am working on is totally different to yours , there is no printed number or reference on motherboards and no schematic to find ,so its not easy as you explain . Anyway i wud be so grateful if you can guide me through this . whilst im measuring i can see the bigger mosfet near battery just before big resistor (i guess its same as PHASE in your video) on the drain i have 19v but on the source number is keep changing ! meter shows 7-8-9-10-11 volt !!? if you know what i mean . also both 5v and 3v are missing . can you plz give me a tip ? thanks a lot
Thank you for your detailed comment. I understand that each motherboard can have its own unique challenges, especially when there are no printed references or schematics available. From what you've described, it sounds like the fluctuating voltage on the source of the MOSFET could indicate an unstable power rail, possibly caused by a short or a faulty component down the line. As for the missing 5V and 3V, these are critical rails that power many of the laptop's components. I recommend starting by checking the power ICs responsible for generating these voltages and any associated MOSFETs for shorts or faulty behavior. If possible, try isolating the circuit to trace the fault more effectively. I'll be happy to guide you further if needed, feel free to reach out with more specific details if you hit any roadblocks. Good luck with your repair.
Unlock your full potential with my Mentorship Experience. This is not just a subscription; it's an elite pathway to mastering advanced repair techniques, troubleshooting skills, and personalized guidance tailored specifically to your goals. Please note: spots are limited, so secure your place today to gain priority access and take your skills to the next level - The link on the top of the description
from indonesia jakarta. For many years, finally i can see the bridge pq51 and pq52 is connect and the voltage is 8v... before, i dont know if they are connected. thank you sir.. You are the best, i hope this channel to be NUMBER UNO in the world.
Thank you so much for your kind words and support from Jakarta! I'm really glad the video helped you understand the connection between PQ51 and PQ52 and the voltage. Your feedback means a lot to me, and I truly appreciate your encouragement. I'll continue working hard to bring valuable content to the channel. Thanks again, and let's aim for number one together! 🙌🌍.
Thank you Bro
@@electronicsrepairbasics_erb
One of the best video . The function of each component in the circuit and trouble shooting it explained very well. Thank you sir.
Glad to hear that, thank you too
Hello. From Mar del Plata, Argentina. I want to tell you that this is actually a true Masterclass. Never so well explained in detail and with a great will to teach.
I have seen many videos on various channels that have taught me a lot, but here I find everything in the process from when the signal is generated, where it passes and who receives it and why they receive it. A very, very good tutorial for beginners and some advanced users. Greetings.
Thank you so much for your thoughtful and encouraging words. I'm truly glad you found the tutorial detailed and helpful. It's my goal to make the learning process as clear and comprehensive as possible. If you ever have more questions or suggestions for future content, feel free to reach out. Thanks again for your support and kind feedback.
very good video i am a french people but i understand so good the video thank you so much you have a nice heart GOD bless you
Thank you so much for your kind words. I'm really glad to hear that the video was clear and easy to understand, even in another language. Your support means a lot, and I'm grateful for your encouragement. May God bless you as well 🙏
@@electronicsrepairbasics_erb Sir the power supply without charging or how it works through 12 volts came from the baterry..? New subscriber sir .thanks...
Thank you for subscribing and for your question. Laptops are designed to work with a range of voltages, and the internal power management system converts the 12V from the battery to the required voltages for different components. This ensures that even without direct charging, the laptop can function properly using the battery's power. If you have more questions, feel free to ask
One of the best most complete explanation of pc laptop power circuits and sequence online. Teach a man to fish and you feed him for life. Well done. Very well done.
Thank you so much for the compliment. Knowing that my video helped clarify such a complex topic means a lot. Your support keeps me motivated!
Im from SA.🇬🇲You are a genius. Keep up your good job
Greetings from Malaysia.tqvm Sir . i very pleased with your content, easy to follow eventhough as biginner, you are the best compare to rest.
So nice of you, thank you bro
From Zambia 🇿🇲 I am your super fan. You are the best at what you do... I have learnt so much and everyday I am improving in laptop repairs.
Wonderful. Thank you.
Thank you for an excellent lesson. It was very clearly presented and very well explained.
Sir, you are a very gifted teacher.
I'm really glad to hear that you found the lesson clear and helpful. Your feedback means a lot and motivates me to keep sharing more. If you ever have any further questions or need more explanations, feel free to reach out
Hello!
I'm so pleased to see your channel!
I've learned too much with you.
Believe me!
Congratulations to you!!!!
Awesome! Thank you
Thank you so much for your very informative and educational videos. I have learned a lot and I look forward to watching many more. Cheers from Scotland.👍
Thank you for your thoughtful message. I'm really glad to hear the videos have been helpful to you. I appreciate your support and look forward to continuing this learning journey together. Cheers to you from here as well. 👍
all i have been learning this while without understanding, you have thought me in less than an hour thank you so much, all i have to do now is to practice what i have learn duo i dont have the equipment's i need, i have to start buying them one by one. thank you so so much.
Thank you for your kind words. I’m thrilled to hear that you found the video helpful and that it clarified things for you. Practice is key, and I encourage you to take your time in acquiring the necessary equipment. If you have any questions along the way, feel free to reach out. Best of luck on your learning journey
Thank you bro, great job. in my opinion this is one of your best videos. informative and clear. good luck bro🥰
Thank you so much for your encouraging words! I'm glad you found the video informative and clear. I’ll keep striving to deliver helpful content. Your support means a lot, wishing you all the best as well
@@electronicsrepairbasics_erb ❤
Thank you
This is the best class ever. Congratulations from Brazil.
Glad to hear that, thank you so much
Best laptop repair video ever on utube. Thank u sir..looking forward for other sucket troubleshooting and repair explanation..
You are very welcome, more to come
Tbarke allahe 3lla sba3e dialnna this explanation is flawless 👍
Thank you bro
Grate video! I love it. When are the remaining sections lectures coming?
@ERB
Working on it
The best I've seen ...... One question, how can the laptop work on 19v as well as 12v from battery being 7v of difference ? or in other words, why we have a 19v charger instead of a 12v charger if 12v is coming from the battery ?
Very good question. Laptops often have built-in voltage regulators that can accept a range of input voltages. This means they can efficiently convert different input voltages, like 12V or 19V, to the necessary operating voltage required by the internal components. The power management system within the laptop ensures that it operates safely and effectively regardless of slight variations in input voltage. If you have more questions or need further clarification, feel free to ask.
Thank you
Laptops typically use a 19V charger instead of a 12V charger due to the need for adequate voltage to charge lithium-ion batteries effectively. A standard lithium-ion cell has a nominal voltage of about 3.7V, so three in series (3S configuration) yield approximately 11.1V to 12.6V when fully charged. A 12V supply is insufficient for charging, as it doesn't account for voltage drops in the charging circuitry
1
.Using a 19V charger provides a necessary margin for the charging electronics, ensuring efficient operation and compatibility with various battery configurations
I loved your explanation. It's very articulated and precise. Maybe you can make a video on how to fix the issues occurring on the components you mentioned.
Keep up the good work.
Noted
Excellent explaition thank you so much for sharing this wonderful and interesting video
Teaching me a lot
Thank you again
God's blessings you
Wow my knowledge on laptop repair is now more clear than before💪
Glad to hear that
Thank you very much. Great teaching.
Glad you enjoyed it!
You're simply phenomenal! I love you and your video.
Wow, thank you! I’m truly humbled by your support. I’m glad you found the video helpful, and I’ll keep working hard to provide valuable content. Stay tuned for more, and thanks again!
Excellent video. I thoroughly enjoyed it. Wonderful explanation and properly paced. I am currently working on a hp 17-x115dx laptop that does not charge and also displays battery not detected. This information you've shared here will prove to be most useful. Thanks for sharing and looking forward to more videos like these...God bless
I’m glad you found the video helpful and that the explanation was clear. Regarding your HP 17-x115dx laptop, the charging and "battery not detected" issue could be related to a faulty charging IC, battery connectors, or even the BIOS. I’m happy to hear that the information shared might assist you in your repair. Stay tuned for more videos, and feel free to reach out if you have any more questions, best of luck with your repair.
Thank you for your feedback 😊
You are my best mentor ever & I'm going to always follow tutorials.
Awesome! Thank you!
I am now cleared, this is what so many are hiding from us. Thank you for this video sir
Thank you
Great video. very good explanation now I do understand finally how the charger circuit works. thank you.
Great to hear!
Thank you sir for beautiful and clear explanation about the defferent signals and voltages in every circuit path.. thank you thank you..your the best teacher ..GOD BLESS...
ما شاء الله بارك الله
بارك الله فيك very interesting very good explanation . I'm new to chip level .Thank you your guidance. جزاك جزاكم الله خيرا.
You are very welcome
very detailed video , it will require a lot of practice with various motherboards and a multimeter to master it . a piece of advice for beginners like me , don't just watch the video and think you got it , practice a lot .
Yes, you are right
Thank you so much Sir. God bless you, I'm here Everytime checking for your new video. Your channel is top-notch when it comes to Motherboard repair and teachings. May God reward you abundantly for sharing this wonderful video with us. Love from West Africa
My pleasure
I am finally proud to sée thé person behind this voice 😊😊😊😊😊😊😊😊
Thank you
Hello, we wait the thing with the chip PCH :) best video and practical demonstration, thanks
In the next video, thank you
Atlast i have seen your face! Thanks for i will keep on trusting the process. Your the best in Electronics explanations.
So nice of you
very well explained,,,,english is perferct and slowly that easily understand,,,thanks sir
Thank you for your kind feedback. I'm glad to hear that the explanation and pace made it easy to understand. I’ll continue striving to provide clear and helpful content. Appreciate your support
EXELENTE SALUDO DE COLOMBIA
Thanks for all you do. But please can you help with latest boards like 8th generation because it seems their reading differs from the old boards. Thanks
Can I give you an advice sir? It is better to say " to check if the voltage is present " or " ...if the current can reach to this point " the voltage doesn't travel but can be " applied " or "presented" because it is the cause. The current runs in the copper wire because it the the effect. I used to do the same verbal mistake. From UK with love
Thank you very much sir,, nice to meet you
Thanks and welcome
Sir, it is a wonderful video, thank you very much. Whatever I say is more or less clear and understandable. I will continue to watch you with curiosity and admiration.🤩
Thank you so much for your kind words. Your support and enthusiasm mean a lot to me, and I look forward to sharing more content with you. Stay tuned for more.
Hi sir how are you this is the first video what i watch it’s really helpful and m your new subscriber keep well god bless you ❤❤
Thank you so much for your kind words and for subscribing. I'm glad you found the video helpful. Welcome to the community, and I look forward to sharing more content that will continue to support your learning. God bless you too.
Very informative video thanks
My pleasure
thank you so much for teaching very clear
Brilliant, thank you very much..(one of the best explaining so far)
Glad you think so. Thank you very much
Whatching from Gabon , thanks for your good works . God bless you
Thank you too
vous êtez le meilleur monsieur que Dieu vous bénissent excellente vidéo très instructive
Merci beaucoup pour vos mots aimables. Je suis ravi que la vidéo vous ait été utile. Que Dieu vous bénisse également. Je continuerai à partager plus de contenu instructif pour vous et tous ceux qui souhaitent apprendre.
vous etes la meilleur des profs ,
Thank you so much
دمت متألقا كعادتك.ننتظرك على ومض الالكترونيك
أكيد أخي الحبيب..ان شاء الله ثلاث فيديوهات حصرية وقوية قريبا على ومض الهاردوير
thanks a lot my friend
Glad it helped, thank you too
Thank you Boss,do video how how to use Dc power supply to inject volts on PCB
I appreciate the suggestion. I will definitely consider making a video on how to use a DC power supply to inject voltage on a PCB. Stay tuned, and feel free to reach out if you have any other ideas or questions. Thanks for your support
Muchas gracias tu video bien explicito lo mejor de lo mejor gracias por compártir tu conocimiento.
I have been watching your videos but there is this particular video am really interested but I have not seen it within your channel. It's about DELL laptop the problem is when I connect the charger and press the power button, the adapter goes off, I have been facing this challenge on different dell machines but haven't been able to solve it yet. Am looking forward to hear from you soon if possible. Thank You Sir,
Thanks from Turkey sir.
Hello brother, your explanation is awesome. I am new to this channel. I wish your channel grow more and more... KUDOS 👌
Bro, I'm really enjoying watching your videos... Just hoping that you could allow us have schematics for our laptop
Thank you for your support and for enjoying the videos. I understand how useful schematics can be for repairs.
Feel free to reach out if you have any other questions or need guidance in your repairs!
Good luck brother smail
Nice to see your great videos
Thanks Bro 👍
Hi nice video in detail thank you very much
Do you have made also block diagram for motherboards with pd controller?
Thank you for your kind words. I’m glad you found the video helpful. I haven’t created a specific block diagram for motherboards with a PD (Power Delivery) controller yet, but it’s a great suggestion. I’ll definitely consider making one in the future. Stay tuned, and feel free to reach out with any other requests
You are wonderful. Thanx from the core of my heart to make it understand so easily.
You're very welcome!
Thanks for posting...really informative and easy to follow, great teaching. Which computer does this motherbord you are using come from? Are most motherboards roughly similar in design?
You have explained clearly be blessed 🎉
So nice of you
Nice to see your face man! thanks for all your work!
I appreciate your support. Thanks for following my work, it truly motivates me to keep going
well explained and also demonstrated practically
Than you so much
Thank you so much for your kind words. I'm really happy to hear that you found it helpful.
thanks for sharing very well said and very clear, and the best.. more power to you.
I appreciate that! thank you
from MARTINIQUE (French West Indies-OVERSEAS).TOP!!!!
Fantastic Video!!! Well done, you have a new subscriber!!!
Awesome, thank you!
Very good video as Always. Gratitude 😊
i give you a synthesis (translate it's french) : SIGNAUX :
- [ ] VC IN : 3,2 V
- [ ] ACok : 3v En alternatif
- [ ] ON OFF : 2,9 V
- [ ] LID SW : 3,1 V
- [ ] WL PWREN EC : power enable 3,2 V
- [ ] RMSRST = 3,2 Volt (vérifier power distribution switch : protege source alimentation et court circuit)
- [ ] DRAMRST : 1,35 V (ligne droite) voltage dépend génération ram DDR
- [ ] RTCRST : 3,3V
- [ ] SLP S5= 3,3V ou oscilloscope ?
- [ ] VTR : 3,3V
- [ ] SIO-PWRON-L = 3V puis 0 V ok
- [ ] ECRST ; 3V
- [ ] PLTRST : 3,3V
- [ ] PWRBTN (DNBSWON) : 3,3V PASSE À ZÉRO PUIS 3 VOLT
- [ ] VBAT (pc portable) : 3V
- [ ] PLTRST : 3,3V ou oscilloscope (il passe très rapidement de 0 V à 3,3V) ce signal est activé seulement quelques Msecondes
- [ ] PSIN = 3 V
- [ ] PSOUT : 3,3 V
- [ ] PSON = 5 V puis 0 V ok
- [ ] SLP-S3 = 3V
- [ ] PS OUT = Alternance barre horizontale haut et bas (peut être faut t-il allumer la carte et l’éteindre pour l’alternance ?)
- [ ] DSW-EN = 3V
SIO
Dans l’ordre :
- [ ] 1) PS-3VSB (le 3 volt stand by)
- [ ] 2) Pwrbtn (3V puis 0 ok)
- [ ] 3) Rsmrst
- [ ] 4) SIO-PWRON-L (3V puis 0 ok) : il signifie au PCH je suis complètement allumé
- [ ] 5) SLPS3-L (SUSB): PCH vers SIO : 3V puis 0 ok
- [ ] 6) PSON-L : 5V puis 0 V ok : signal part de SIO vers ATX (cable vert)
- [ ] 7) VCC (VIN): 0 puis 3V ok
- [ ] 8) PWRGD (ATXPG) : 0 puis 3V ok
- [ ] 9 ) PWRGD : 0 puis 3V ok (SIO vers PCH)
SIGNAL PCH
- [ ] 1) CPU-PWROK (uncorepwrgood) : 0 puis 3V (PCH vers CPU)
SIGNAL VRM
- [ ] 1) VR Ready (0 V puis monte voltage ?) vers pch (sys-pwrok)
SIO
- [ ] 13) PLTRST(LRESET) : 3V puis 0 V ok
- [ ] 14) SIO-PCIRST3-L (0v puis 3V) SIO vers PCIEX16 (connecteur) et
- [ ] 15) SIO-PCIRST1-L (PCI-E XIA et XIAB) 0V puis 3V ok
- [ ] 16) SIO-PCIRST2-L (SIO VERS CPU) 0 V puis 3V ok
PUCE DE CHARGE
- [ ] Pin ACOK : 2,5V
- [ ] Pin ACDET : 2,5 V
- [ ] CMSRC (common source) : si elle détecte une tension non approprié, la puce coupe l’arrivée avant le premier mosfet
- [ ] VCC
- [ ] REGN : 6V
- [ ] CMSSRC : 19 V
- [ ] ACDRV : 24V (voltage chargeur + 6V : contrôle les pattes du mosfet)
- [ ] ACN : 19V (sortie shunt resistor) : calculer l’intensité qui rentre dans la carte mère : si il y a
- [ ] ACP : 19V (entrée shunt resistor)
- [ ] EN1 : 2,2 kOhm
LE PCH est la plus grosse puce ci-dessus, il communique avec le bios Egalement
Parfois un il y a un bios pour le PCH et 1 bios pour la puce SIO
Il faut que les 5 tensions soient présentes : 3,3 VSUS (après avoir appuyé bouton démarrage,) 1,05 VSUS (Apres…), 1,8 VSUS (Apres …), 1,5 Vous (après)
3VAlways; +RTCVCC (qui vient de la pile CMOS traversant une diode)
, LFRAME ou LPCFRAME (affichage)
Le PCH est rebillé : si il est un peu dessouder certaines fonctions ne seront pas actives
La patte du Bios Chip select se mesure avec l’oscilloscope.et la patte read (si il ne passe rient sur cette patte le bios est le problème)
SIGNAUX
- [ ] SLP S3, SLP S4
- [ ] PowerButton (vérifier en priorité)
- [ ] RsmRst (vérifier en priorité) signaux provenant de la puce SIO
- [ ] Pour les fréquence Hertz du RTC et clock il faudra un oscilloscope (25 Mhz et 32,7 Khz RTC avec le CMOS). Si on les voit pas sur la carte, ils seront à l’intérieur du PCH
- [ ] Il envoie un signal 33 mhz à la puce SIO (oscilloscope)
- [ ] Il envoie le signal frame à la puce SIO (oscilloscope)
- [ ] PLTRST (Plt reset, se retrouve sur le connecteur wifi pin 22 avec 3 V ) : signal envoyé du PCH vers le processeur pour le réinitialiser (la carte sera démarrée également)
- [ ] Signal RTCRST (provenant de la pile CMOS)
- [ ] Signal PwrGD et SysPwrGd (à vérifier avant le PLTRST)
- [ ] La puce clock
- [ ] SM BUS CLOCK et SM BUS DATA : SMBCLK SMBDAT (signaux pour la ram à vérifier au niveau de la puce SIO)
- [ ] Frame (oscilloscope au niveau de la puce SIO)
Thank you for your synthesis of the signals. It provides a comprehensive overview of the voltage checks across various points on the motherboard.
Your analysis of key signals like VC IN, ACOK, ON/OFF, and the reset signals (RSMRST, PLTRST, DRAMRST) is quite thorough. Based on these measurements, it seems you're systematically checking the critical voltages and their behavior, which is excellent for diagnosing power issues.
For some signals like PLTRST (Platform Reset) that pass quickly from 0V to 3.3V, using an oscilloscope would indeed provide better visibility, as you've mentioned. The transient nature of these signals makes them difficult to capture with a multimeter alone.
Your examination of the charging IC and power signals is also well-structured. If the charging IC, especially ACDRV and CMSRC, is showing unusual values, further testing or replacement of the MOSFETs and surrounding components may be needed.
Overall, your approach is methodical and seems to cover all necessary voltage and signal checks. If you require any further clarification or assistance in diagnosing a specific issue, feel free to ask. Keep up the great work!
Unbelievable masterclass ❤
Very clear and well explained.. thanks...
You are welcome
Great explanation allways good to learn, big hug from Portugal my friend
Glad you liked it!
Simply super excellent!!!!! My humble thanks.
So nice of you
Thank you sir! it is amazing lesson! can you please make the same thing for the next voltages like CPU,ram,bios and power buttons.
Thank you for your kind words. I’m glad you found the lesson helpful. I appreciate your suggestion, and I’ll definitely consider making a video covering the next voltages for components like the CPU, RAM, BIOS, and power buttons. Stay tuned for more content.
Great mentor.
Thank you
Very good work sir, but could you please show us your multimitre its other part when you are testing
Ok Noted
Thanks you are smart teacher
So nice of you
Very good Lecture thank you...!
So nice of you
Thank you very much for teaching us in a way that is easy for all of us.
Looking forward to your next videos, because you teaching method is unique...!
I’m truly glad to hear that my teaching method resonates with you and makes the content easy to understand. Your support means a lot, and I’m excited to share more videos with you soon. Stay tuned.
Great video buddy. Love learning with you, dude.
I appreciate that! more to come
Thanks so much for the work you do it means alot for the clients and computer technicians thanks so much
I'm truly grateful, and I'm glad the content is helping both clients and fellow computer technicians. Your feedback motivates me to keep sharing more valuable information. Thanks again
@@electronicsrepairbasics_erb Thanks so much
My pleasure
Good teacher sir...thank you so much your video is very useful 🙏
You are most welcome
Please make a video on voltage sequence in mother board like first of all which volt will be generated and then which one and so on...
Noted
Thank you brother! Jah bless You🙏🙏🙏
You are very welcome
Tell us also about vehicle ecu
Noted
بارك الله فيك
Love your way to teach.
Thank you! Cheers!
Thank you for extensive information
Our pleasure!
Very good video! Thank you.
Our pleasure!
Very good video for me. thanks a lot ...
You are most welcome
Great video. Thanks alot. Shukran
I’m glad you found the video helpful. Thank you too
@@electronicsrepairbasics_erb All your videos are very helpful.
Thank you bro
Great job! Many thanks!
Thank you. I appreciate your support and am glad you found the video helpful.
Thanks a llt for you help. You are great person
I truly appreciate your support, and I'm glad the content has been helpful to you. Feel free to reach out if you need any further assistance.
thank you ,your vedio very nice
You are very welcome, thank you
Keep up the good work sir
Thanks, will do!
Thanks!
Thank you so much for your support 🙏❤. I'm glad you're finding the content helpful. If you ever have any questions or need further clarification, feel free to ask. Stay tuned for more valuable content.
Thanks teacher
You are welcome
Hello sir you are great 👍👍👍👍👍👍👍
Many many thanks
hello , first thanks for the excellent videos sir but the laptop i am working on is totally different to yours , there is no printed number or reference on motherboards and no schematic to find ,so its not easy as you explain . Anyway i wud be so grateful if you can guide me through this . whilst im measuring i can see the bigger mosfet near battery just before big resistor (i guess its same as PHASE in your video) on the drain i have 19v but on the source number is keep changing ! meter shows 7-8-9-10-11 volt !!? if you know what i mean . also both 5v and 3v are missing .
can you plz give me a tip ? thanks a lot
Thank you for your detailed comment. I understand that each motherboard can have its own unique challenges, especially when there are no printed references or schematics available. From what you've described, it sounds like the fluctuating voltage on the source of the MOSFET could indicate an unstable power rail, possibly caused by a short or a faulty component down the line.
As for the missing 5V and 3V, these are critical rails that power many of the laptop's components. I recommend starting by checking the power ICs responsible for generating these voltages and any associated MOSFETs for shorts or faulty behavior.
If possible, try isolating the circuit to trace the fault more effectively. I'll be happy to guide you further if needed, feel free to reach out with more specific details if you hit any roadblocks. Good luck with your repair.
Thank You soo much bro for this instrucive vidéo
You're very welcome. I'm glad you found the video instructive. If you have any questions or need clarification, feel free to ask. I'm here to help.
LOVE from NEPAL SIR.
Thank you
Thank u Sir
All the best