The 9 Minutes Motherboard Voltage Hack for Busy Laptop Repair Pros

[@humankibo1560]

Bro! you deserve 100M subscribers, Knowledge should be free as you do; but, experience is never free. Keep up with the good spirit and it shall reward you for sure.

[@electronicsrepairbasics_erb]

I appreciate your support. Let's keep learning together.

[@CashFlowCraze]

As usual informative content, been here since below 10k subs nice to see you hitting 100k+ subs, congrats bro

[@electronicsrepairbasics_erb]

I truly appreciate your kind words and support! It’s amazing to see how far we’ve come together, and I’m grateful to have viewers like you on this journey! Stay tuned for upcoming gifts to celebrate 100K together

[@diaslassa1089]

thank you very much for all your detailed explanations👍

[@electronicsrepairbasics_erb]

Glad it was helpful!

[@BTm-h8t]

❤Thank you very much for your sharing.

[@EZgoing14901]

I sir, very much appreciate your time and effort in going into your videos. I have learned a LOT so far. I'm looking forward to going through your past videos and learning more. Thank YOU sir!!

[@electronicsrepairbasics_erb]

Thanks for watching, I'm glad you're finding the videos helpful

[@munsudennis3998]

I like how u teach brother keep up the good work God bless you

[@Kinworld]

Thanku very much from India

[@electronicsrepairbasics_erb]

Thanks bro

[@eddymintz6623]

Thank U Sir, another great lessons!!

[@electronicsrepairbasics_erb]

So nice of you

[@ISMAIL-dl3gw]

Thank you for this insightful video ❤

[@electronicsrepairbasics_erb]

You're very welcome!

[@ironk99]

thanks you sir for your efforts we like your teachings and knowledge

[@electronicsrepairbasics_erb]

I really appreciate your support!

[@Rayyanboss-dl8xb]

Hi Respactabile Sir very nice Guide Sir i appreciate for you Respactabile Sir i salute for your sir Thanks a lot,s Respactabile Sir Frome Pakistan Gizri Karachi Muhammad Khalid khan Electronice Shope

[@electronicsrepairbasics_erb]

Thank you for your kind words. I appreciate the support

[@harrydhiman3520]

Thank you so much for your videos sir. I just have one query, which one is easy to understand a motherboard a schematic or a boardview? And please make a video on how to understand a motherboard voltages using a boardview.

[@electronicsrepairbasics_erb]

Thank you so much for your kind words and support. Regarding your question, both the schematic and the boardview are essential tools, but they serve different purposes: Schematic: Best for understanding the circuit design and relationships between components. It’s like a map of how everything connects. Boardview: Ideal for physical component identification on the motherboard. It shows where components and pins are located, making it great for practical troubleshooting. For beginners, starting with the boardview might be easier for locating components, while schematics help when you want to dive deeper into how circuits function.

[@amirjarang6512]

sehr schön, danke ❤💯🍺🍺

[@electronicsrepairbasics_erb]

Welcome

[@jonaselliot8792]

Hi, I really like your videos. Can you explain to us how the signals work or how they communicate with each other?

[@electronicsrepairbasics_erb]

Noted

[@OriginalKumwenda]

So how find a short components on the motherboard

[@JayasingheHetti]

I need to know without chager what are the voltages and with chager in an asus LA-D641.

[@hadjnabil4811]

thank you.

[@electronicsrepairbasics_erb]

You're welcome

[@jannmedia]

" your like is multivitamin me" good one

[@emmanueltechnica9477]

Hello bro nice tutorial. I have a couple of questions. If I don't find the 3.3v and 5v but 19v present what will be the most likely culprit? If I don't find the ram voltage what will be the mostly likely fault?if I find ram voltage but no termination voltage what will be the most likely fault, if I have the other voltages but no processor voltages if the processor is a Soc what will be the likely faults. What voltages are responsible for the display rail and mostly faults? Thank you. Sorry for too many questions at once

[@electronicsrepairbasics_erb]

Hi @emmanueltechnica9477, Thank you for your kind words, and I’m glad you enjoyed the tutorial. Let me address your questions one by one: If you don't find 3.3V and 5V but 19V is present: The likely culprit is the buck converter circuit responsible for stepping down 19V to 3.3V and 5V. Check the MOSFETs, controller IC, and surrounding passive components (resistors, capacitors, and inductors) in the circuit. If you don't find RAM voltage: The fault might be in the VDDQ rail that supplies power to the RAM. Inspect the power supply IC and the associated FETs, resistors, and capacitors. Also, ensure the enable signal for the RAM power IC is present. If RAM voltage is present but no termination voltage (VTT): This is often due to a fault in the termination regulator circuit. Check the VTT regulator IC and its surrounding components, as VTT is typically derived from the RAM voltage (VDDQ). If other voltages are present but no processor voltage (for an SoC processor): The issue might be related to the SoC power rail controller or the enable signal not being generated. Look for faults in the VRM circuit dedicated to the SoC, including the PWM controller and related MOSFETs. What voltages are responsible for the display rail and their common faults: Display power rails include the LCD/LED backlight voltage (usually 20-30V) and panel logic voltage (3.3V or 5V). If there’s no display: For backlight issues, check the backlight driver IC, boost circuit, and LEDs. For panel logic issues, inspect the LCD power circuit and ensure the LVDS or eDP signal is being transmitted correctly. Let me know if you need further clarification or detailed steps for diagnosis. Don’t hesitate to ask. I’m here to help.

[@emmanueltechnica9477]

Thanks so much my bro. You know your stuff and you are a great teacher. May you kindly send me your email address. You mentioned something about the display voltage of between 20v to even 30 something volts, where does that higher voltage come from when the main rail DC in voltage is 19v? Is there a boost circuit or something? Then my other question under what conditions or symptoms is the bios flashed. Thank you

[@nithyanadas5220]

Very good vedio

[@electronicsrepairbasics_erb]

I'm glad you enjoyed it.

[@TechHEN]

Hello ..please Help me😣😣 my jesverty DC power supply capacitor over hating The Capacitor explosion and i changed but still the same problems

[@AbdulGhafoor-e6e]

Did you repair embedded system?

[@electronicsrepairbasics_erb]

Sure,

[@AbdulGhafoor-e6e]

@electronicsrepairbasics_erb your contact? Phone number?

[@prodembilgiislem]

You say that there are always coils next to each other in 3 and 5 volts, but there are other coils next to each other in the circuit. Like in CPU voltages. We can find which coil is connected to where from the connected paths, but I think if two coils are next to each other, is it correct to say that this is a 3-5 volt circuit? Thank you.

[@electronicsrepairbasics_erb]

Great observation! You’re right that there can be other coils in the circuit, especially in CPU voltages. It’s important to analyze the connected paths to get a clear picture of the voltage distribution. Thanks for sharing your insights!

[@Sarockpashotan123]

Hi dear young teacher. May you say the brand and model no of the firist and second laptop board? Thanks a lot.

[@electronicsrepairbasics_erb]

I'll keep that in mind for future videos.

[@iCloudMobile-c7t]

Can you share basic repair pdf for beginner? pls Sir

[@electronicsrepairbasics_erb]

Absolutely. I’ll put together a basic repair PDF for beginners. Stay tuned!

[@iCloudMobile-c7t]

@ thank you so much Sir🥰

[@leroux-ianni]

Is it true that, for instance the 3.3v and 5v are PRESENT only if we press on the power button but other laptops can have it in standby mode, but I'm not completely sure about this point

[@electronicsrepairbasics_erb]

Great question. In many laptops, 3.3V and 5V standby rails (commonly called 3.3V_ALW and 5V_ALW) are always present, even in standby mode, as they supply power to components like the EC (Embedded Controller) or the power button circuit. These are critical for the system to respond when the power button is pressed. When you press the power button, additional power rails (like CPU or GPU-related voltages) are enabled to power up the rest of the system. However, there are exceptions where some laptops may not show these standby voltages until specific conditions are met, often for energy-saving purposes. It's always best to refer to the motherboard schematic or service manual for confirmation. Let me know if you'd like a deeper dive into this topic! 😊

[@leroux-ianni]

@@electronicsrepairbasics_erb man thanks very much for your patience and time to explain this 🙏

[@YadesaKisi-hx1ul]

How to sensor perform? This upon video.

[@electronicsrepairbasics_erb]

Noted next time

[@LEVOYAGEUR2.0]

استاذ نفتقدك في القناة العربية

[@electronicsrepairbasics_erb]

قريبا أخي الكريم

[@tdkreddy748]

Need you support fir working on my old dell laptop with 5gen i5 processor and grapgichs card. When i switch on the laptop it gives 6 beep swound and screen does no kickon. I am from india how can i contact you

[@electronicsrepairbasics_erb]

Hi, you are very welcome brother, join me on my patreon mentorship and you will get my number to help you fix any laptop you have

[@tsarodavid9730]

Great man. Thank you 🙏🏿

[@electronicsrepairbasics_erb]

Thanks for watching.