Very nice video :) rare to see someone repairing these boards ... them cost 39+VAT (a520m) .. any kind of phisical work means losing money .. and it's very nice to see someone digging on the issues.
Ich hatte überlegt das Board zu kaufen, um meine bescheidenen Lötfertigkeiten ein wenig zu trainieren. Da aber keine Blende mit dabei war habe ich das dann doch gelassen. Nachdem ich jetzt sehe was mit dem Teil los ist bin ich echt froh darüber. Das ist wirklich was für den Fachmann :) Danke für deine interessanten Videos.
Thanks for the content, very informative. If possible can you make a video about what could go wrong with mainboards, and what one can do to avoid these problems . I am sure there are thousands of factors maybe the top 5 or 10 reasons, and some tips. That would be great. Keep up the good work.
Actually there are very few reasons for owners to be honest! Most common reason is dust and heat, that makes VRM´s blow up. Second reason is user damage, while handling the board. And third would be plugging stuff into the wrong ports, so user error again!
I had the same issue with a MSI x370 gaming pro. It was tunring on but stuck at CPU. With cpu it wouldn't turn on. The MP5077 was burnt (no BIOS then), the MP247GD-Z connected to it was 60°C hot and wouldn't provide the correct +V to the MP5077. Also, I had multiple ASM1480 dead multiplexers. All replaced, the board is now 100% working.
What do you think how that happens? Was there an overvoltage or something like that? Because those Multiplexers run on 3.3V as far as i know, and the MP5077 mostly has nothing to do with the 3.3V!
@@MainboardMedic the guy I bought it from said he got it as working (he lied), but the seller he got it from (good thing for the feedbacks) told me his graphics cards died under a slight overclock. PCIe 1 was working (directly connected to cpu) when tested after repair. NVMe multiplexer and 2 others directly connected to PCIe n2 and n3 died. I replaced them straight away when I saw it POST and didn't actually test if they were working @ less than x8 and x4 respectively. Maybe he was going for a SLI oc. My guess is that the graphics card shorted bad, killing the ASMs (vid cards + some nvme), the cpu and the BIOS up to the MP247GD. For all that to fry you need some serious juice running through. 10€ + 12€ for parts=22€ for a not so bad board.
I guess something downstream of the MOSFETs is using a lot of power, ie, faulty. Maybe someone shorted between rails, and that over-powered the lower ones. There might be pin compatible chip for the unobtanium, or just design another supply with a different chip.
Can you share how you do to know the consumption and the amps ? Take by the motherboard? Thanks for sharing your knowledge... Greattings from Portugal 🇵🇹 🌟
Only from experience, when i started i had no idea, but after all the boards i did, i now know aprox, what to expect! One off the most important aspects off current is if it is static or jumping! Static is most off the time bad and jumping is mostly a good sign!
@@MainboardMedic Sorry, I explained myself poorly, I wanted to tell you how you made the connections to see the voltage and consumption of the board... volts and amps ? Thanks
@@skysurfhf Oh i got it, its called a M4430 on aliexpress! Its a current sensor! So i have a 12V 100A power supply that connects to the M4430 and that then connects to a 12V to 24pin pico adapter! So you only supply 12V and meassure the amps off the 12V and the adapter then converts it to the voltages needed for the 24 pin!
Hello and thanks for the many tips. How did you get the board view files for these motherboards? I am trying to fix a supermicro motherboard with a broken buck converter IC which I am unable to properly identify. There is only a 4 digit code "89DI" on it which does not show up in the usual IC marking databases.
Been binging you a bit recently and have got to ask a question you may be able to give some advise on. The usb ports send power for about a quarter of a second then drop completely. I was thinking cpu related but before spending money on one I'd like a second opinion.
Hello thanks again for my last comment. I am trying to repair Gigabyte B650M Aourus Elite AX (Newer AM5 motherboard). The problem is stuck on CPU bebug LED. Things that I have done so far Found physical damage on capacitors next to SIO(iTE IT8689E) one was shorted. Replaced both caps. First boot attempt results in stuck CPU LED. Checked for voltages. All present though there is a weird 0.75V rail near BIOS chip. Resistance of Vcore phases measure 85 ohms without CPU installed. Too low? Sends 0.9V to CPU when attempting to boot. CPU does get warm after a few seconds. Lighting LEDs near B650 chipset flashes for a split second then stays off sometimes when power supply is turned on, before pressing power button. Desoldered BIOS chip and flashed with new version (F30). CPU LED is still stuck. Used thermal camera to try to find any shorts. Nothing over 50C. Aside from the VRMs there is a serial chip translator/buffer chip (AZ75232) that does get unusually hot 46C at power up. Last thing I checked was the oscillator crystals. One near CPU socket works at 48Mhz. One near B650 chipset works at 25MHz Once again confirmed voltages around SIO and chipset. 1.0V/1.8V/3.3V Any suggestions would be greatly appreciated. Thanks.
Have you checked the backside for more dmg? If you found damage already there likely is more! What is the resistance off the 12V CPU? Is pcie reset still applied?
Ja ich kaufe diese meistens tatsächlich, sind relativ Teuer, meistens 5€ pro Board! Es gibt paar Discord Server bei denen man auch einige bekommen kann! Also der LER discord server oder der Electronics repair shool server!
Looks like victim of voltage injection done by someone who just tried to copy what he saw online without understanding anything. Anyway, about that voltage controller - board manufacturers rarely use something that can't be replaced with different part so you can probably find something else in the same package with a same pinout (chipmakers also try to use same pinouts as competition for a same reason, at least when their customer isn't Apple or somebody big like that).
this is the sad reality of amd, a lot of bling bling for something unfinished, bad products, nicely packaged, suffering from instability, incompatibility and in general an unpleasant experience sometimes with errors you don't even know you have. That's why Intel has the experience for 20-30 years, and everything works as it should and amd creaks. Even the 9th generation will still have problems. Probably in 10 years it will become a stable platform. Most defective motherboards are amd. why ?
Have you seen the intel 13th and 14th gen issues? AMD had been making CPU since the 70's. Cheap motherboards and users miss handling doesn't = AMD being unfinished. I have built numerous Intel and AMD (even some Cyrix) systems over the years they can all have problems.
Intel are going down the drain. Their latest CPUs are terribly unstable. Data centres are sending them back. I haven't seen all these unstable AMDs, but I've seen various boards fail for any number of reasons. AMD have been making CPUs about as long as Intel have.
Very nice video :) rare to see someone repairing these boards ... them cost 39+VAT (a520m) .. any kind of phisical work means losing money .. and it's very nice to see someone digging on the issues.
By far you're the best desktop motherboard repair UA-cam channel and I can't get enough of your content
Nice Job , Bring back motherboard to Life !
Ich hatte überlegt das Board zu kaufen, um meine bescheidenen Lötfertigkeiten ein wenig zu trainieren. Da aber keine Blende mit dabei war habe ich das dann doch gelassen. Nachdem ich jetzt sehe was mit dem Teil los ist bin ich echt froh darüber. Das ist wirklich was für den Fachmann :) Danke für deine interessanten Videos.
Fast die Katze im Sack gekauft! War wirklich ein Abenteuer das Ding!
uhhh man that board is nasty!!! Solid effort mate!
Thanks for the content, very informative. If possible can you make a video about what could go wrong with mainboards, and what one can do to avoid these problems . I am sure there are thousands of factors maybe the top 5 or 10 reasons, and some tips. That would be great.
Keep up the good work.
Actually there are very few reasons for owners to be honest!
Most common reason is dust and heat, that makes VRM´s blow up.
Second reason is user damage, while handling the board.
And third would be plugging stuff into the wrong ports, so user error again!
Well done .
Your videos are the best. You analyzed everything in detail. I really appreciate it.
I had the same issue with a MSI x370 gaming pro. It was tunring on but stuck at CPU. With cpu it wouldn't turn on.
The MP5077 was burnt (no BIOS then), the MP247GD-Z connected to it was 60°C hot and wouldn't provide the correct +V to the MP5077. Also, I had multiple ASM1480 dead multiplexers.
All replaced, the board is now 100% working.
What do you think how that happens? Was there an overvoltage or something like that? Because those Multiplexers run on 3.3V as far as i know, and the MP5077 mostly has nothing to do with the 3.3V!
@@MainboardMedic the guy I bought it from said he got it as working (he lied), but the seller he got it from (good thing for the feedbacks) told me his graphics cards died under a slight overclock. PCIe 1 was working (directly connected to cpu) when tested after repair. NVMe multiplexer and 2 others directly connected to PCIe n2 and n3 died. I replaced them straight away when I saw it POST and didn't actually test if they were working @ less than x8 and x4 respectively. Maybe he was going for a SLI oc.
My guess is that the graphics card shorted bad, killing the ASMs (vid cards + some nvme), the cpu and the BIOS up to the MP247GD. For all that to fry you need some serious juice running through.
10€ + 12€ for parts=22€ for a not so bad board.
I guess something downstream of the MOSFETs is using a lot of power, ie, faulty.
Maybe someone shorted between rails, and that over-powered the lower ones.
There might be pin compatible chip for the unobtanium, or just design another supply with a different chip.
I can see possible short on DDR or PCI-E Slots on 16:11 please see Maby is nothing but i can't tell from my screen.
Can you share how you do to know the consumption and the amps ? Take by the motherboard? Thanks for sharing your knowledge... Greattings from Portugal 🇵🇹 🌟
Only from experience, when i started i had no idea, but after all the boards i did, i now know aprox, what to expect! One off the most important aspects off current is if it is static or jumping! Static is most off the time bad and jumping is mostly a good sign!
@@MainboardMedic Sorry, I explained myself poorly, I wanted to tell you how you made the connections to see the voltage and consumption of the board... volts and amps ? Thanks
@@skysurfhf I believe "northwest repair" showed how to build something like that.
@@skysurfhf Oh i got it, its called a M4430 on aliexpress! Its a current sensor! So i have a 12V 100A power supply that connects to the M4430 and that then connects to a 12V to 24pin pico adapter! So you only supply 12V and meassure the amps off the 12V and the adapter then converts it to the voltages needed for the 24 pin!
Hello and thanks for the many tips. How did you get the board view files for these motherboards? I am trying to fix a supermicro motherboard with a broken buck converter IC which I am unable to properly identify. There is only a 4 digit code "89DI" on it which does not show up in the usual IC marking databases.
I mostly use the discord of Learn electronics repair and Electronics repair school!
Been binging you a bit recently and have got to ask a question you may be able to give some advise on. The usb ports send power for about a quarter of a second then drop completely. I was thinking cpu related but before spending money on one I'd like a second opinion.
Might need to check the resistance off the USB line, there might be something shorting it, which is why its cutting out!
Question the regulator was listed as Q 86 isn’t that a Mosfit
Hello thanks again for my last comment.
I am trying to repair Gigabyte B650M Aourus Elite AX (Newer AM5 motherboard). The problem is stuck on CPU bebug LED. Things that I have done so far
Found physical damage on capacitors next to SIO(iTE IT8689E) one was shorted.
Replaced both caps.
First boot attempt results in stuck CPU LED. Checked for voltages. All present though there is a weird 0.75V rail near BIOS chip.
Resistance of Vcore phases measure 85 ohms without CPU installed. Too low?
Sends 0.9V to CPU when attempting to boot. CPU does get warm after a few seconds.
Lighting LEDs near B650 chipset flashes for a split second then stays off sometimes when power supply is turned on, before pressing power button.
Desoldered BIOS chip and flashed with new version (F30). CPU LED is still stuck.
Used thermal camera to try to find any shorts. Nothing over 50C. Aside from the VRMs there is a serial chip translator/buffer chip (AZ75232) that does get unusually hot 46C at power up.
Last thing I checked was the oscillator crystals. One near CPU socket works at 48Mhz. One near B650 chipset works at 25MHz
Once again confirmed voltages around SIO and chipset. 1.0V/1.8V/3.3V
Any suggestions would be greatly appreciated. Thanks.
Have you checked the backside for more dmg? If you found damage already there likely is more!
What is the resistance off the 12V CPU?
Is pcie reset still applied?
Wo bekommst du deine Boardview Dateien her ? Aus Foren gekauft? Ansonsten finde ich keine richtige "Seiten"...
Ja ich kaufe diese meistens tatsächlich, sind relativ Teuer, meistens 5€ pro Board! Es gibt paar Discord Server bei denen man auch einige bekommen kann! Also der LER discord server oder der Electronics repair shool server!
Looks like victim of voltage injection done by someone who just tried to copy what he saw online without understanding anything.
Anyway, about that voltage controller - board manufacturers rarely use something that can't be replaced with different part so you can probably find something else in the same package with a same pinout (chipmakers also try to use same pinouts as competition for a same reason, at least when their customer isn't Apple or somebody big like that).
this is the sad reality of amd, a lot of bling bling for something unfinished, bad products, nicely packaged, suffering from instability, incompatibility and in general an unpleasant experience sometimes with errors you don't even know you have. That's why Intel has the experience for 20-30 years, and everything works as it should and amd creaks. Even the 9th generation will still have problems. Probably in 10 years it will become a stable platform. Most defective motherboards are amd. why ?
Well its a very low end board, but i think this might have been user error, because the RAM supply usually doesnt get hot at all!
Have you seen the intel 13th and 14th gen issues? AMD had been making CPU since the 70's. Cheap motherboards and users miss handling doesn't = AMD being unfinished. I have built numerous Intel and AMD (even some Cyrix) systems over the years they can all have problems.
@@JoshImig Yeah ive seen that exspecially the higher end ones from Intel are failing left and right!
Intel are going down the drain. Their latest CPUs are terribly unstable. Data centres are sending them back. I haven't seen all these unstable AMDs, but I've seen various boards fail for any number of reasons. AMD have been making CPUs about as long as Intel have.