MOTHERBOARD BLEW UP ON MY BENCH! || MSI B450 PRO VDH V2 MOTHERBOARD REPAIR

My Tools:
DDR3 and DDR4 Post code tester (white ddr card): s.click.aliexp... *
Tweezers: de.aliexpress....
Soldering Station AIXUN T3A T245 B Set: de.aliexpress....
JBC tips that i use: C245-906 (bought of a german retailer) , C245-030 (bought of a german retailer) , C245-908 amzn.to/47eHP05 * , C245-752 amzn.to/47BqxtO *
PCIE Post Card: s.click.aliexp... *
Side Cutters: de.aliexpress....
DDR3 DDR4 Data line Tester: s.click.aliexp... *
Pre heater: s.click.aliexp... *
Reball jig: s.click.aliexp... *
needle probes: s.click.aliexp... *
CH341A Bios chip programmer: s.click.aliexp... *
New Bios programmer:
www.reveltroni...
Soder Wick: s.click.aliexp... *
Microscope: s.click.aliexp... *
Microscope Ringlight: s.click.aliexp... *
Microscope Arm (used 3D printing to make it work, can provide an STL if needed): amzn.to/3R1hn48 *
Power supply: s.click.aliexp... *
12V to 24pin ATX adapter: s.click.aliexp... *
Components Tester: s.click.aliexp... *
Hot Air: Some Quick 861DW counterfeit
The Flux i use sucks, so dont buy it lol
The Copper wire i use is 0.1mm Enameld wire, link is dead, but the wire wasnt great anyways
Oscilloscope RIGOL DS1054Z amzn.to/3R2aDmE *
Thermal Camera P2 PRO s.click.aliexp... *
Multimeter (cheap one for beginners, that i still use): UEZNIRN IEC61010-1 multimeter
UV light: amzn.to/40L0fD1 *
/ mainboard_medic
Links marked with * are affiliated links and i get a small comission from them without you paying extra. (The * is not part of the link)
For any business inquiry :
[e-mail]

[@Piccadilly-m7r]

All respect. Compared to other techies, this man proves that he does a special job. I am a simple subscriber of this channel. The man is fair play. I've been watching this channel for a while and I'm impressed. Succes. I'm from Romania and bravo to the people who are able to provide this information.

[@wolf1438]

The coin battery - this reminded me once I got a laptop that literally had a COIN instead of battery stuck into it. Laptop was dead (water damage), but at least I got 10 cents.

[@nadiya1995]

So proud of you! I am looking forward to see your next repair videos!

[@unimportant5122]

Why is it insane that a "70A P-channel MOSFET just burned trough"?. It burns because of power dissipation. In a short circuit situation the full 12V is dropped across the MOSFET. Even if it conducts only a single Amp that will dissipate 12 Watt in the MOSFET which is orders of magnitude beyond what a D2PAK can handle.

[@juhaszpeter4796]

Nice save. I usually strengthen and repair high-performance rails with copper braid. For low power, I prefer to use copper tape. It is easier to cut and takes up less space under the mosfet component. I personally use the thermal camera with an extender, so I can place the tablet in a fixed place and move the camera around. As I do with my endoscope camera.

[@MainboardMedic]

I am trying to get my thermal camera connected with my PC but i am having issues with the software and i am already in contact with their support and hope to be able to deliver better views with my thermal camera!

[@Yarogum]

заморочился ты конечно=) интересно ремонт на грани фола) спасибо лайк тебе

[@Takashita_Sukakoki]

Need to check that 12v cpu power resistance in the future. The boards VRM is anemic to begin with. Pretty sure a 16 core would be VRM thermal throttled in a stress test.

[@MainboardMedic]

Well its also only a B450 board and a cheap one at that!

[@phanthanhlaptop]

[4:27] Wow, what a journey! Seeing you bring that motherboard back to life after all those challenges was super satisfying. Your knowledge and troubleshooting skills are truly impressive. Keep up the great work!

[@saarike]

Simply Great repair!!! Nice vid, thanks.

[@danthompsett2894]

soo impressive given the state of the trace under the mosfet. real question is was it killed by the cmos battery being fitted upside down?

[@MainboardMedic]

Thank you! It defenetly wasnt killed by that! The 3.3V from the battery has no way into the VRM section and also it supply so little current, it would be able to kill a mosfet!

[@danthompsett2894]

@MainboardMedic thinking bout it probably won't do anything apart not being able to save bios settings giving out negative voltage.

[@oliverhoschi6135]

Liebe den Kanal, habe eine Menge defekter Mainboards, und wenn man im Internet sonst nach "Reparaturanleitungen" sucht, findet man immer Foreneinträge "Dein Mainboard scheint defekt zu sein, kauf Dir nen Neues". Dabei sind es ja oft nur Kleinigkeiten die kaputt gehen, aber so gut wie niemand kann einen da weiterhelfen. Viel gelernt durch diesen Channel, Danke!

[@MainboardMedic]

Es befasst sich kaum jemand damit, da es finanziell keinen Sinn macht! Das wissen und Erfahrung die man braucht ist an anderen Stellen einfach besser investiert, wenn man den Finanziellen Aspekt im Kopf hat. Ich mache das hier ja nur wegen dem Spaß an der Freude!

[@TheBoringCreatr]

very strong german accent.. yeees jaas

[@MainboardMedic]

yeeeeeees, it exspecially gets worse, when i am sick like in this video!

[@psi23k]

Very nice fix on both 👍

[@danfrench5221]

man you are so good I wish I knew all that

[@xConundrumx]

and this is why you have a current limit set on you power supply.

[@MainboardMedic]

Well i am using a server PSU, which you cannot current limit! But i will be adding fuse in there in the future!

[@KillerBreeze420]

That takes skill. There was this time my father tried adding ram to his computer and he somehow managed to squeeze it in the wrong way without breaking it a true master. FYI It doesn't take long to fry a CPU with no heatsink on it. Do you think the seller even checked it?

[@adey88splace]

"I love the smell of burning components in the afternoon!"

[@PCGACID]

Very under rated channel ..... ... we nee more people interested in board repair

[@AlexLaptopRepair]

Keep up the good work

[@Dutch-linux]

I had the exact same board and went up in smoke and blew a powersupply that board was crap... never thought MSI could make bad boards like that

[@Google_Is_Evil]

The phase probably got hot because you did not put the big aluminium elco back. Much more voltage variance due to that, resulting in much more switching and thus more heat.

[@MainboardMedic]

When stress testing, the cap was back in there! Did that just before puting the heatsink back on there!

[@larsenmats]

That phase heating up more than the others may have caused the original fault?

[@MainboardMedic]

Might be, but i really cant tell why, with having the passive components checked and replaced the whole phase! So only the PWM controller left if anything!

[@rick5078]

How am I not surprised it was one of the mosfets not covered by the heatsink that got unhappy?

[@MainboardMedic]

Actually that one is covered with the heatsink! The thermal pad touching it even got burned into it! But the cooler is very small!

[@rick5078]

@@MainboardMedic when it blew, it looked like the one that is sticking out from underneath.

[@ja.935g67]

What temperature are you setting your heat gun to to desolder those SMD components?

[@MainboardMedic]

For VRM and thicker boards i go around 400C and with smaller passive components i go for around 370-380C!

[@ja.935g67]

@@MainboardMedic Thank you! If I wanted to send to you an AM5 x670e board how would I do that?

[@MainboardMedic]

@@ja.935g67 Sending me an email regarding that linked in my description!

[@CotyRiddle]

bext time current limit it. Would have not damaged the boared as much.

[@MainboardMedic]

The pico adapter is connected to a server PSU that cannot be current limited! I will be putting a fuse on that 12V line next time!

[@SidneyCritic]

The owner must have a ATX PS with short circuit protection, ie, you need to unplug it from the wall to reset it.

[@MainboardMedic]

As far as i know basicly every standard ATX power supply does that, but my PICO adapter doesnt do that! The server PSU that i use also has a protection, but it doesnt trigger because there is a mosfet in between from the pico adapter! And yet again i will ask, when will you do another "not repairing" motherboards! I really enjoyed watching your videos!

[@knightfall-1]

dam ive been working on comps for 35yrs never seen the battery put in like that lol

[@BenState]

Put fuse on the adaptor?

[@MainboardMedic]

Puting an inline fuse with the 12V is a great idea! I should get around to do that!

[@shadowopsairman1583]

Those vrms need FANS

[@BenState]

No they don't.

[@drewnewby]

@BenState I mean, they could use one after they let out the magic smoke, just to clear out the room.

[@14k-m3v]

Quanto voce cobra por um reparo desse no seu país?

[@MainboardMedic]

Hey there i do not charge for my repairs, because i do this in my free time!

[@frankwong9486]

N brand mosfet, classic 😅

[@nb1843]

can u share some board views?

[@MainboardMedic]

Contact me via email regarding that!

[@PassiveMoney1979]

no current protection on that pico adapter..... garbage

[@MainboardMedic]

Jep exactly that! I did not know that before, but now i do! Every other ATX power supply wouldnt have done that!

[@PCGACID]

and took ur CPU with it

[@MainboardMedic]

Luckily it did not! CPU still works!

[@GotNoRapidFire]

hey hallo, n deutscher macht englische videos??? ok

[@MainboardMedic]

Sachen gibts, die gibts gar nicht!

[@dave-bennett]

Please don’t fall into the American tap SODER as the word does have an L in English and is pronounced soLder not SODER

[@MainboardMedic]

I really do that, dont i! It exspecially got worse because i was sick while recording the video! I will try to think off that the next time i will record a video!

[@itstheweirdguy]

You replaced what was visually broken and nothing you did to this worthless motherboard was scientific. This motherboard shouldn't be used and needs to be put in the trash.

[@MainboardMedic]

Would you midn explaining your argument further? Why this wasnt scientific and why the board needs to be trashed?