Update on this Repair! It's been a while since I shot this video, and the board kept bothering me, so I decided to put it on the preheater and try to bend it back. I heated it up and then let it cool down slowly. The board was a lot straighter after that! So, I tried to power it on, and, lo and behold, it got worse. It wouldn’t boot up at all anymore! But I noticed that SPD was now completely missing, which hadn’t been the case before. So, I checked the SPD line. It connects to VCC3 (3.3V) through a 0-ohm resistor, then a fuse, and finally goes into the sockets. It turned out the 0-ohm resistor had gone up to 2.5k ohms! So this "0-ohm" resistor was actually on its way out, still letting some voltage and current through. But after the heat cycle, it cracked even further and increased in resistance! I replaced the 0-ohm resistor, and the board works fine now! I didn’t record any of this because I honestly didn’t expect to make any progress. Sorry about that, but I really wanted to share the insights I gained from this repair!
As a long-shot I was thinking the power was sagging the more RAM sticks you plug in, ie, move the RAM and it connects but the voltage drops. Looks like the failing resistor was doing just that - lol -.
The tester and shipping are both really expensive for that tool, but looks like it has extreme potential. I have seen people just wiring and taping test points over faulty RAM modules to turn them into testers but this is indeed one step ahead. I'll try to wipe all components of faulty RAMs and try to put an MCU on it to replicate at least the voltage readings. For now I know that the DDR3 DDR4 Data line Tester uses the SPD line for power.
Hi Medic, what programmer were you trying to use to flash the bios with your DIY cable. I have purchased an Asus bios flash cable just like the one you made, but i haven't been able to get it working for ISP programming. I have a T48 and also an SP8 both where not cheap, and I see people using a $2 programmer to do ISP. Maybe i should get one lol
It really depents on the board you are flashing, sometimes the 1.8V or the 3.3V for the SPI chip is the main 1.8V or 3.3V line and then the programmer has to push to much current into those lines, because it supplys the whole board on that line! It happened with my Revolt programmer, that there are overcurrent situation where theres nothing left for me but to desolder the chip!
@@MainboardMedic Yes I am always stuck de-soldering the bios IC to program them, but after doing so many now, its really no problem. You do some great stuff here, and I have been learning alot from your videos. Motherboard diagnostics really is a monumental feat!
Do you have any interest getting a motherboard sized hotplate and hot air nozzles for PCH/GPU soldering? With your skills you could probably repair most electronics (gpus/laptops etc)
Hello i'm kinda noob to this and i have a question. I have no power when i click power button, i've tested my 8 pin 12 volt and it seems that i have a short on one of the ground pin. 3 of them beep on continuity mode and one doesn't. Again i'm a noob to this but if i'm right, where do i go from there ? Can the problem come from that? Thanks.
No reaction to the power button can be a lot off different things. Doesnt have to be a short on the main rails, can we also standby voltages that are missing! The CPU 12V connector should have short to ground on 4 pins and no short on the other 4
I have face the same problem before - - it turn out to be cpu socket it make conection when puting pressure on ram side Try to open the socket and clean that work for me
Had a similar issue with an bent Asus board(Z87m-plus) Some times when installing 2 RAM modules, it did not want to boot, had to take out 1 ram stick, wait to boot, turn it off and then add the second stick. It happend on the four slots of that board. I really never inspection it on the microscope 'cause was my daily driver. Just selll it recently never knew what happend. In the channel of @OsmanysMartinez saw a solder defect on new boards, seems that asus is doing dirt-cheap things on manufacturing process. Also very good thing you could reapair the x370 board, good video.
Update on this Repair!
It's been a while since I shot this video, and the board kept bothering me, so I decided to put it on the preheater and try to bend it back. I heated it up and then let it cool down slowly. The board was a lot straighter after that! So, I tried to power it on, and, lo and behold, it got worse. It wouldn’t boot up at all anymore!
But I noticed that SPD was now completely missing, which hadn’t been the case before. So, I checked the SPD line. It connects to VCC3 (3.3V) through a 0-ohm resistor, then a fuse, and finally goes into the sockets.
It turned out the 0-ohm resistor had gone up to 2.5k ohms! So this "0-ohm" resistor was actually on its way out, still letting some voltage and current through. But after the heat cycle, it cracked even further and increased in resistance!
I replaced the 0-ohm resistor, and the board works fine now!
I didn’t record any of this because I honestly didn’t expect to make any progress. Sorry about that, but I really wanted to share the insights I gained from this repair!
Thanks!
Thank you very much !!!
As a long-shot I was thinking the power was sagging the more RAM sticks you plug in, ie, move the RAM and it connects but the voltage drops. Looks like the failing resistor was doing just that - lol -.
Well done.
@@SidneyCritic Your gut feeling was exactly right!
The tester and shipping are both really expensive for that tool, but looks like it has extreme potential. I have seen people just wiring and taping test points over faulty RAM modules to turn them into testers but this is indeed one step ahead. I'll try to wipe all components of faulty RAMs and try to put an MCU on it to replicate at least the voltage readings. For now I know that the DDR3 DDR4 Data line Tester uses the SPD line for power.
Hi Medic, what programmer were you trying to use to flash the bios with your DIY cable. I have purchased an Asus bios flash cable just like the one you made, but i haven't been able to get it working for ISP programming. I have a T48 and also an SP8 both where not cheap, and I see people using a $2 programmer to do ISP. Maybe i should get one lol
It really depents on the board you are flashing, sometimes the 1.8V or the 3.3V for the SPI chip is the main 1.8V or 3.3V line and then the programmer has to push to much current into those lines, because it supplys the whole board on that line! It happened with my Revolt programmer, that there are overcurrent situation where theres nothing left for me but to desolder the chip!
@@MainboardMedic Yes I am always stuck de-soldering the bios IC to program them, but after doing so many now, its really no problem. You do some great stuff here, and I have been learning alot from your videos. Motherboard diagnostics really is a monumental feat!
Can you use those tpm headers for msi boards
Same works with MSI boards!
Do you have msi b450 gaming plus max brodeview?
Do you have any interest getting a motherboard sized hotplate and hot air nozzles for PCH/GPU soldering? With your skills you could probably repair most electronics (gpus/laptops etc)
I am actively looking for one, that even ETAX boards will fit. Yuhui I think they are called sell one but sadly not in Germany!
...maybe the sockets???
Hello i'm kinda noob to this and i have a question. I have no power when i click power button, i've tested my 8 pin 12 volt and it seems that i have a short on one of the ground pin. 3 of them beep on continuity mode and one doesn't. Again i'm a noob to this but if i'm right, where do i go from there ? Can the problem come from that? Thanks.
No reaction to the power button can be a lot off different things. Doesnt have to be a short on the main rails, can we also standby voltages that are missing! The CPU 12V connector should have short to ground on 4 pins and no short on the other 4
@@MainboardMedic Thanks for the reply, i will continue to investigate, even if i don't find the problem i'm kinda learning stuff.
I have face the same problem before - - it turn out to be cpu socket it make conection when puting pressure on ram side
Try to open the socket and clean that work for me
Bad factory soldering , looks like.
You interested in buying an faulty Mainboard from a viewer?😅
Hook me up on my email!
Had a similar issue with an bent Asus board(Z87m-plus)
Some times when installing 2 RAM modules, it did not want to boot, had to take out 1 ram stick, wait to boot, turn it off and then add the second stick.
It happend on the four slots of that board. I really never inspection it on the microscope 'cause was my daily driver. Just selll it recently never knew what happend.
In the channel of @OsmanysMartinez saw a solder defect on new boards, seems that asus is doing dirt-cheap things on manufacturing process.
Also very good thing you could reapair the x370 board, good video.
Do you have Telegram or WhatsApp? How can you be contacted?