Well your efforts are inspiring. I have managed to fix a couple of boards but the hunt for the fault takes time. Watching your efforts is very helpful for my own repairs.
It might seem a little difficult for you. But it was very helpful for me. I'm just starting to learn about circuit repair and my knowledge is 0. But now I'm starting to understand how it works. Thank you very much for such a great video.
Die besagten Schrauben heißen "self-tappers". Das war ja wieder mal ein echt spannender Fall, da kann so mancher Krimi nicht mithalten. :D Wenn ich raten müßte, würde ich sagen, Blitzschlag oder NT katastrophal hochgegangen, jedenfalls ist die Häufung der Fehler schon etwas ungewöhnlich... Mach auf jeden Fall weiter so, sowas macht ja sonst kaum einer und es ist echt interessant.
I really enjoy your videos, especially these longer ones, the more you troubleshoot the more it helps me to understand how to troubleshoot even better, thank you for these awesome tech videos. Cheers my Friend!
You can also find a shorted high side mosfet by checking the gate in diode mode it will show 0v voltage drop. Without using a thermal camera.. But you need the processor installed in the socket because it will not show
Recently had a Gigabyte X99 Designare EX that did autostart when plugged in, what i did is reflashed the bios , didnt work and what made it work was taking out the battery, holding the power button to turn on and then off and it started working
@@MainboardMedic No worries, hopefully i can learn stuff. I got a really stubborn msi x470 that im pulling my hair out. Do you have like a discord to share some info?
@@edy8556 I do not have one, because its a lot of work to make one and also moderate it. There are very good discords from Learn Electronic repair and Electronics repair school.
how do you repair VRM without any measurements on vcore, vsoc? i hope you did just did not show it on camera. also if there is no voltage on power button then sio is a toast. no wonder it autostarts
Well the mosfet was shorted and i did show it on camera that it got hot and after desoldering it, i showed under the microscope that source and drain was shorted. Then i soldered a new mosfet.
@@MainboardMedic yes but after you’ve done replacing mosfets you have to measure vcore and vsoc at least to confirm it is within normal range rather than trying if cpu is getting hot and if it posts. There still could be no vcore present even if there is no short
I asked you once to add the boardview in the description since you have access to rus forums but you still dont do it. So im not gonna share with you how to check for dead pch ( and its not low imp caps). Something you should start with every time.
@@MainboardMedic Asrock Steel Legend B450M. Thanks, I haven't checked VTT yet and you might be right, as VTT becomes SLP S3# signal and this becomes VCore EN, so if VTT is missing, that's the reason for low Vcore EN. Then if VTT is missing it could be faulty transistor or regulator or resistor on the path. Edit: I have VTT 0.6V. I have also SLP_S3# 3.4V. but there is no VTT_DDR VREF_R
@@mikegaming4924 From what ive seen VDDIO_PG is a part of enabling VCORE! And there are also above the DDR slots there are some Transistors and resistors that enable VCORE. One off the necaccary signal that i could find was PROCHOT_L coming from the CPU itself. Another Signal that i was quickly able to chase down is the 5V coming from the 24 pin.
Yes, I have 2.93V at VDDIO_PGOOD. At PD1 I have 3.4V at pin 2 and 0.83V at Pin 1. PD1 diode measures 0.6V using diode mode. Resistors PR65, PR67 measure OK. UP9505_EN to GND resistance mode is 20K. There should be over 2V at Pin 1 of PD1 and I don't really understand why it is 0.83V
Can't wait for part two :).....you really need to have patience on this kind of MB repairs, due to their complexity.
Well your efforts are inspiring. I have managed to fix a couple of boards but the hunt for the fault takes time. Watching your efforts is very helpful for my own repairs.
It might seem a little difficult for you. But it was very helpful for me. I'm just starting to learn about circuit repair and my knowledge is 0. But now I'm starting to understand how it works. Thank you very much for such a great video.
Die besagten Schrauben heißen "self-tappers".
Das war ja wieder mal ein echt spannender Fall, da kann so mancher Krimi nicht mithalten. :D Wenn ich raten müßte, würde ich sagen, Blitzschlag oder NT katastrophal hochgegangen, jedenfalls ist die Häufung der Fehler schon etwas ungewöhnlich...
Mach auf jeden Fall weiter so, sowas macht ja sonst kaum einer und es ist echt interessant.
Es macht echt Spaß dir zuzuschauen . Ich mache ähnliche arbeiten
I really enjoy your videos, especially these longer ones, the more you troubleshoot the more it helps me to understand how to troubleshoot even better, thank you for these awesome tech videos. Cheers my Friend!
You can also find a shorted high side mosfet by checking the gate in diode mode it will show 0v voltage drop. Without using a thermal camera.. But you need the processor installed in the socket because it will not show
I really love this channel. Cannot wait for part 2. Awesome work. You need to setup a Patreon to get some support.
thanks for this and other videos! This atx current display where can I get it from? Or have you built it yourself?
Ive build it myself. Its just a current sensor that i got off aliexpress!
Just joined your channel from the UK
HHmmm LOL well done mate actual technicians are rare keep on it.
What happened to this board? So many faults. Is this board a "serious" board from Aorus - or is it a super cheap/barely working one?
This one is genuine. I guess there might have been a thunderstrike getting to this board or something similar, where there was a big overvoltage!
Think the b450s have flaws my b450-f is completely dead also I did a no cpu bios flash nothing sadly I don't have rework station
Mosfets are NOT NOT NOT voltage dependant for SD shorts, why would you expect that?
Recently had a Gigabyte X99 Designare EX that did autostart when plugged in, what i did is reflashed the bios , didnt work and what made it work was taking out the battery, holding the power button to turn on and then off and it started working
Already figured that out, but that will be in part 2 ;)
@@MainboardMedic No worries, hopefully i can learn stuff. I got a really stubborn msi x470 that im pulling my hair out. Do you have like a discord to share some info?
@@edy8556 I do not have one, because its a lot of work to make one and also moderate it. There are very good discords from Learn Electronic repair and Electronics repair school.
What a wreck, yikes. Hope it's not also just a dead PCH in the end.
how do you repair VRM without any measurements on vcore, vsoc? i hope you did just did not show it on camera. also if there is no voltage on power button then sio is a toast. no wonder it autostarts
Well the mosfet was shorted and i did show it on camera that it got hot and after desoldering it, i showed under the microscope that source and drain was shorted. Then i soldered a new mosfet.
@@MainboardMedic yes but after you’ve done replacing mosfets you have to measure vcore and vsoc at least to confirm it is within normal range rather than trying if cpu is getting hot and if it posts. There still could be no vcore present even if there is no short
@@flusher35 Oh well that i really didnt show you are right! SOC and VCORE are both present. I didnt check it with an osciliscope yet.
@@MainboardMedic cool. Check power goods and SIO
I asked you once to add the boardview in the description since you have access to rus forums but you still dont do it. So im not gonna share with you how to check for dead pch ( and its not low imp caps). Something you should start with every time.
Sorry, but you are asking me to do illegal file sharing and i can not do that. There are other places which do that.
How old are you ? 5? Can’t even believe he replied to your comment…
B450 I have VCORE EN 0.8V (low) it should be 2V , the controller is UP9505... I have all voltages before it, like Vdimm , what could it be
Did you check VTT DDR? And also which board exactly i might be able to check a boardview where the signal should be coming from!
@@MainboardMedic Asrock Steel Legend B450M. Thanks, I haven't checked VTT yet and you might be right, as VTT becomes SLP S3# signal and this becomes VCore EN, so if VTT is missing, that's the reason for low Vcore EN. Then if VTT is missing it could be faulty transistor or regulator or resistor on the path. Edit: I have VTT 0.6V. I have also SLP_S3# 3.4V. but there is no VTT_DDR VREF_R
@@mikegaming4924 From what ive seen VDDIO_PG is a part of enabling VCORE! And there are also above the DDR slots there are some Transistors and resistors that enable VCORE. One off the necaccary signal that i could find was PROCHOT_L coming from the CPU itself. Another Signal that i was quickly able to chase down is the 5V coming from the 24 pin.
Yes, I have 2.93V at VDDIO_PGOOD. At PD1 I have 3.4V at pin 2 and 0.83V at Pin 1. PD1 diode measures 0.6V using diode mode. Resistors PR65, PR67 measure OK. UP9505_EN to GND resistance mode is 20K. There should be over 2V at Pin 1 of PD1 and I don't really understand why it is 0.83V
@@mikegaming4924 Must be something around QP60!
Супер ❤
👍 very nice.
Gutes Video - eigenartige Fehleranalyse - lausiges Englisch
Wie hätte ich denn besser herangehen können an die Fehleranalyse?
Thank you very much for time wasting