Desktop Motherboard Repair Tutorial 

Most underrated and comprehensive boardview and mobo component operations video tutorial ever!

Love you because you make effort to adding translations to share the knowledge!

I love doing with fixing electronic board. This is my first time watching the methods. Its good and very informative. Thanks man.

Hi I have the same board. It's not turning on and looks like a short somewhere on it. Thanks for sharing this video! I have now finally learned how desktop motherboard power distribution works, what to look for, and test with the multimeter and how to diagnose the board. Going to work on it tomorrow! :D

Good job going through these in detail and explaining why.

Outstanding video on the trouble shooting of the motherboard. Thank you for sharing! Liked and subscribed.

This tutorial needs many likes of onde person. The best of the best.......

Clearing the BIOS worked in getting the pc to power on. Thank you.

I'm proud your experienced to troubleshoots a dead motherboard. That's the most underrated and comprehensive boardview of that moboard component part operations video tutorial ever so far. But I need help a quick question my friend about my Asus P4P800-E Deluxe motherboard. This is my first time trying to resurrect/repair my dead motherboard. Only certain part I repaired and changed/replaced already the (1) BIOS chip, (2) capacitors, (1) IC-driver controller to mosfet, and (2) transistor mosfets (negative side body) near side of the CPU processor. I have the PTi9 LCD PCI Diagnostic Analyzer Tester...indicates LED lights of +12V, +5V, +3.3V, and Reset are good (lights on) & fan runs means no problem on transistor Mosfets anymore as I double tested too that 12Volts are running good designed to run CPU processor. But the PTi9 LCD PCI Diagnostic Analyzer tester still telling me that there's signal error, it says check the CPU and power box (power supply is tested good all +12V, -12V, +5V & +3.3V) and the other two indicates that RST and FRAME are both Invalid shows in PTi9 tester. Also I'm seeing LED lights of FRAME, IRDY, and SYSClk are off, it shows in the PTi9 PCI Diagnostic Analyzer tester. I have the "Boardviewer" software (to see the schematic diagram of P4P800-E Deluxe board) that I clicked the CPU drawing part and looked at the RESET, looked at the motherboard then tested the Resistor that is soldered/connected on negative side that the value is correct that has no problem. The two pin reset (for the button reset) doesn't work when I pressed the button. If you have time, please try to look on the Boardview in part of the RESET pin because it's not working. I don't know about that FRAME & RST where to troubleshoot that. I touched the CPU processor it doesn't make any at least build up heat/warm. I tested the CPU processor from my other Asus motherboard, it's running fine. What part of the motherboard should I trouble shoot on that P4P800-E Deluxe? This part I'm lost already. I need help, any idea? Great help would be appreciated so much. Here's what I did, I plugged one 1GB stick ram, 3V battery button, fan for CPU, plugged-in the PTi9 Post Diagnostic Analyzer Tester, unplugged CPU processor and 12V-4-pins, then plugged the 20-pin power supply, then turn it on, everything runs even though it's unplugged CPU and 12Volts-4-pin. On the tester it shows LED lights on at the +12Volts, +5Volts, 3.3Volts, RST, CLK, except FRAME, IRDY, and SYSClk. So, it means the issue is at the Power Block of CPU because CPU doesn't build up warm/heat. Problem is still don't know where is the one that doesn't provide either the +5Volts or 3Volts or 1.2Volts. Intel 82865PE MCH Chipset build up its own heat but it has its own original heatsink since P4P800-E Deluxe was built in & sold in the market.

really the best tutorial ever !

Very useful explanations ! Congratulations !

That's the devil of a presentation dude!!!! I feel so overwhelmed n honoured to-day!!! 😍😍😍💖💓💓🌷😎

the guide is good and easy to understand ... I am a beginner who does not know much about repair but I am learning ... thanks

HELLO DOC B! Am an avid Subscriber, you are my first 'Go to' when diagnosing PC issues! I recently built a new Computer in my old Tower with a new Raidmax Vampire 1000W 80 Plus Gold Power Supply, an MSI Z390-A PRO Motherboard with an Intel Pentium Gold Processor G5400 CPU @ 3.7GHz! Next added 64.0 GB DDR4 3200 Ram! Also a ZOTAC GAMING GeForce GTX 1 Video Card! Recently upgraded all my HHD's with an Intel 660p Series M.2 1 TB SSD Drive C and two WD I TB internal SSD's! My Computer now boots up completely for a cold start in 30 seconds!!!! (Once in a while when I turn it on, it Boots into the Bios Screen)!!!(But when I wont to boot into Bios, no matter what key combination I press it wont go into Bios on Command)! Windows will not display on my Digital Monitor but I can see the Bios Screen on another HDMI Output to my 32 inch TV! Am running XMP Mode and Gaming Mode on the MSI along with allocating 3/4 of my Ram to Process my Adobe Premiere 2022! My Question is: How do I get the computer to Boot into Windows EVERY TIME? And secondly, How do I get my computer to boot into Bios on command?

Damn Good Video Bro! Now these are the kind of Vids I like to watch! Insane.

great video , we need more of desktop motherboard repair tutorial ,

I really dig this video. Thanks for making it.

interesting presentation ! thank you DR 4 your Methodology imparts ideas 1oo% clearly .

Salute to this guy. I have a suggest. May you also zoom in the component that you are measuring for beginners. Tnx

Thanks, very very helpful this video!!!! 👍👍👍👍

This is fantastic!

this is very complex repair tutorials.. hehehe.. but I would love to learn and use that boardviewer app.. and love how you explained it too..

Wow you are quick to check all those fets and power supplies.

'Thank you very much for all your help and useful information.

great tutorial, I have a dozen dead motherboards, I'll be back when successfully repairing one of them based on this tutorial

Thanks for your videos, could you do more beginner desktop videos in the future

Hi, Thanks for the video. I have an ASUS B250 Mining expert, trying to figure out why it has not power. It was on a PSU which burned out during a cyclone, maybe power fluctuations. Where do you get the schematics and if you dont have aschematics how do you check the MOSFET regulators etc...

Excellent!!!

It's like being in school, thank you.

amazing video.thenk you.

Thank you brother for this video.

Thank you for sharing sir new supporters here

i love it..thanks for detail..

Wow.. Thank you for this tutorial...

Great explain !!

Thank You Dr!!

Great job sir

This is great :)

Thank you so much for including it in English!

You're a magician. Thank you for walking through your problem-solving steps

Thank you Mr robot man.

Thanks for the information

Voltages on Crystal pins is in mili volts, and not in mili ampere? 🙄🙄🙄

Thank you sir, it really helpfull. More video tut.

Speechless... thank you.

I appreciate the time and effort went into making this video however whoever wants to learn repairing motherboards is not gonna learn from this video that's for sure. I'm not completely beginner so about 95% of the time I could understand what's he talking about but he did a lot of unnecessary things/measurements/explanations which does more harm than good. Another thing is he completely reliant on the boardview file so what happens when there is no boardview file or schematic diagram for the motherboard? Or if we have to repair a VGA? He won't know what those 32789 ic's do on the pcb. All in all this tutorial was 90% good for this specific motherboard (MSI H61M-P21) and 10% good for every other motherboard on the planet. Lot of time went by explaining what those ic's do based on the boardview file. A more universal approach would've been much more informative.

EXCELLENT SIR

It's crazy how he knows the components' order of operation and how everything is expected to work. You have to take a lot of notes in this video but it looks to be complete to help diagnosing other boards as well. I'm trying to find a fault on a z97-Ar v1.00 from asus that shuts off immediately after starting. But if you disconnect 8pin CPU power cable then it doesn't shut off. I removed the inductor connecting 12v to the mosfets and with both cables connected it doesn't shut off. So the problem lies somewhere in the mosfets of the cpu supply. I'm still trying to pin point it. It might be a bad pwm ic

The best promise. I love it.

I love you dr bios

Great video 😉 Where do you get the schematics from?????

Very good LEARNING video TkQ

Very usefull information thanks

Great video

I have a question about the time 31:30. In the inserted scheme I see 7 numbers. But the component has 8 pins. I think you measure VIN and VOUT. How do I identify the correct pins? Greetings Tobias

many thanks, sir .

hi there. what is the correct word to enter in google to download this document which shows what goes "where" ? on how much celsius you set the gun from heat station. do you apply some flux or other for the remove the IC from the motherboard?

Thanks for the video! this was very educational. Where do I get the motherboard board layout files? I tried to repair my own board but without this information, it was hard to figure out what each section does.

What program do you use to diag these boards I have a few dead boards here I’d like to learn on

very nice tutorial

Very good!

Bravo! 👍

Thank you .

i wonder where do you get the motherboard circuit diagrams ?

super sir very usefully class video

thank you very much

Hi please help me with little information about mosfets can I use tph1r403nl instead of xp3na3r4

Good sugetion sir

This is great :) , I have an ASUS P5KPL-AM SE MOTHERBOARD NOT SHOWING ON THE SCREEN AND WHEN I HOLD THE PROCESSOR IT IS VERY HOT, CAN HELP ME? THOUGHT THE COMPONENT WAS BROKEN

it work on my pc thx bro vеry much

Great video, we can learn much from you....And i have a question: how to check with digital multimer? is it low ohms in kohm or just ohm, and high in mohm? Thanks, and great work, keep on going....

i watch this and learn new things. i need to re-watch this to let it sink. do you have a video for repairing an ASUS P7H55-V? after i turned it on, the fan spin then turn off then spin again but no display. i already changed the ram and flashed the bios.

thanks for the video but it will be good if you follow your content and from time to time to answer people. However thanks for the good video again :)

Every time he says yes, makes me feel i am understandig and learning xD

Freakin good! Thanks alot!

Wait Even I remove the CMOS Battery still turn on for a while and still not turning on same as you do "Press the button and 2 secs off" love ur vedios bro 🙂💜 Also I need a Multimeter to check haha 😅

where can i find the board view showed in the video?

Very good

I would appreciate a close up shot where you can see exactly what pins they are measuring there

hope you can share with us some of your boardview files..hehe!

I have a Gigabyte H-61ms-1 motheboard ... it has 2 fan connectors..1 connector is not working ... what could be the problem ..... please help me ...

Where do you get your Board viewer files?

Hi,can you help me in getting this boardview please: lenovo ideapad y580 boardview You sent It's mainboard no. Lenovo Y580 compal LA-8002p Rev:1.0

Switching Power Supply any without load: as is told, you should never do it. Or perhaps the new power supplies are different? PS. The are many courses by people speaking with poor English accent and are therefore useless. Thanks for jumping over this obstacle and for the valuable lesson.

Good tutorial, but this is a lot of work and time. I wish you could solve the puzzle of the server boars ASUS KN8 DRE dual socket 940. This motherboard is known for being difficult to get logo or boot screen, even brand new unboxed. people say the problem comes from the ECC DDR400, it requires a very specific type of Ram and places it in a specific order to get video output on the screen. when you switch the motherboard on, the green led light on, the fans spin, but you get no video output

what temperature do you use on your hot air?

Sir, where to download the board viewer to check all components

You did this schematic ?

I have a motherboard with AMD CPU and the plastic clip that holds the CPU on the motherboard got baked and broke. Also some capacitors bulged. I thought that computer was done. However, I got some capacitors to replace the faulty ones and I am going to use a wire to tie the CPU to the socket and the computer should be just fine :D

Thanks for this video, I am from Argentina and I am learning to repair motherboards on my own and most of the information I find is paid or does not explain the boot sequences, they leave you wondering, the technicians I ask do not want to answer or they will sell you the schematics

why changing the probe while checking ohm should value be higher ?

Good d morning cat I get site for the schematic sortfware please

Wow, this is thorough, lmao.

Execellent sir How can download the diagram

M poli

Yes.

what happens if my mother keep turning on off rapidly

Please! Pc Motherboard Diagram Software Download Link. I need It. Please Sar

🙏🙏

wow