B550 ASUS PRIME PLUS REPAIR | STUCK DRAM LED | MAINBOARD REPAIR

My Tools:
DDR3 and DDR4 Post code tester (white ddr card): s.click.aliexpress.com/e/_DlP... *
Tweezers: de.aliexpress.com/item/400120...
Soldering Station AIXUN T3A T245 B Set: de.aliexpress.com/item/100500...
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.aliexpress.com/e/_DFG... *
Side Cutters: de.aliexpress.com/item/330008...
DDR3 DDR4 Data line Tester: s.click.aliexpress.com/e/_DeX... *
Pre heater: s.click.aliexpress.com/e/_DdL... *
Reball jig: s.click.aliexpress.com/e/_DDB... *
needle probes: s.click.aliexpress.com/e/_DDV... *
CH341A Bios chip programmer: s.click.aliexpress.com/e/_DDS... *
Soder Wick: s.click.aliexpress.com/e/_DB4... *
Microscope: s.click.aliexpress.com/e/_DBw... *
Microscope Ringlight: s.click.aliexpress.com/e/_DdR... *
Microscope Arm (used 3D printing to make it work, can provide an STL if needed): amzn.to/3R1hn48 *
Power supply: s.click.aliexpress.com/e/_DlM... *
12V to 24pin ATX adapter: s.click.aliexpress.com/e/_DF6... *
Components Tester: s.click.aliexpress.com/e/_Dl1... *
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 Seek Compact amzn.to/47hGeX6 * (I would check out the infiray P2 Thermal cameras to be honest if i wouldnt have already bought this one!)
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 inquierments:
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[@labeatjasiqi6649]

I bought an lga1200 motherboard and had 2 ram slots but the seller said that only one of the slots works. After checking the board somebody tried to put a wrong cooler and the screw damaged the traces on the board. Just connected them and put some uv mask and it was done. Good job, i hope i can learn a lot from you in the future. Keep the good work

[@MainboardMedic]

Nice repair!

[@rongray8934]

Visual inspection being very important on this one. Nice job.

[@gkhngvr]

Nice catch that half resistor, waiting for new videos 👍

[@ergi2226]

great video as always

[@ertted1295]

just an FYI all b550 boards need a true 3000 series or 5000 series cpu so zen 3 the x570 board the first ones could run 2000 series but once you updated the bios it goes to 3000/5000 series cpu needed

[@Khinh-xq6lx]

good looking board

[@OntarioMiner]

Nice video. thanks for sharing

[@accurian148]

Nice one, i would simply missed that resistor even with microscope because it looks kinda ok.

[@2009numan]

the diagnostic leds are in the same order on all ASUS motherboards

[@lucataszarek8782]

Hello🤝good job 👍👍👍👏👏👏👋👋👋👋👋

[@Khinh-xq6lx]

its a simple fix

[@sahifulrahaman9133]

I got a asrock B450 Steel Legend mobo with a wired fault. Board has no VCORE.. But sometimes the board works without any issue... Sometime woring.. Most of the time its not working. What is your suggestion in this case?

[@MainboardMedic]

I would flash the Bios first, just in case. I would inspect the CPU socket afterwards and components around it. There might be something that is heating up and then breaking/making contact. Also mounting preassure of your cooler might make a difference. I also encountered 1 case, where the screws going into the case were so tight, that it broke the connections. So there are sadly a lot of things, that can be at fault here.

[@sahifulrahaman9133]

@@MainboardMedic BIOS done... Physically no component is missing... No issue with CPU socket... most of the tme its getting power on without VCORE. But sometimes the board turned on without any issue.. every and each voltage pesent and working fine... And it was on my repair desk...

[@MyElectronicsRepairAdventure]

What would you check if the motherboard (AM4) does not react after installing CPU? Once removed, the board starts just fine, voltages appear and the LEDs turn on. With CPU inside I can only see 1.8V on the board and nothing more, no reaction to power button.

[@MainboardMedic]

Is the CPU known good?

[@MyElectronicsRepairAdventure]

@@MainboardMedic Yes, and works with other motherboard. And should be compatible/supported. Tried BIOS programming but nothing changed. I noticed that without CPU voltages look ok, except for Vcore, which is around 250mV. Probably need to investigate there.