BUYING BROKEN MOTHERBOARDS FROM EBAY TO FIX OTHER MOTHERBOARDS | MSI X370 Gaming Plus Repair Motherb

hello and welcome to yet another video today we have an x370 gaming plus this is an am4 board as you can see this is defective and this seems to be not the only one that the seller has and this is the first time I bought off of a company seller not just someone privately selling this board was advertised as not working not booting for whatever reason um they had a very generic description in there the the socket might be defective there might be water damage or whatever whatever and we're today going to find out what is wrong with this W I specifically bought this board because I have one of these boards with physical damage very heavy physical damage where the board boots up with only in Apu and none of the PCI is working none of the SATA is working and only some of the USB are working so I want to fix this board up and then use this to fix the other board up to be able to compare it to the other one and if that doesn't work to have at Le if if I can't get this working I at least have some things that I can compare to the other one but let's see what this board doeses physically it looks in um decent condition one thing I've already noticed is at the slot you can see scratch marks there on the PCI slot but that should be fine we're going to build a spot up I think think instantly and we're going to see how this behaves so I'm going to be using an APU again in here I'm going to be using the 2,200 G that I have so now we have everything built up and now let's see going to turn the power supply on and oh I forgot to connect my clamps again and now let's see for the power consumption that is very bad that is very very high power consumption H oh I've just noticed something I've just noticed that there are pin headers on the bottom here and on the bottom here that are bent out of place let me show you that if you can see right here these are completely bent down but they're not touching anything there's another pin right here that is bent outwards let's show you the these again um but none of these look like they should be touching anything or should be a problem to be honest any heavy damage on the backside or anything um the big thing is that we have very high um passive power consumption so that would be something where I expect that um the 5 vsb is shorted somewhere um um or the 3 vsb one of those two one of the things that could always be the PCH but we need to find out what it actually is let's see now we're going to turn it on the power consumption is high let's see if this reacts to the power button at all and it does not okay that was to be expected the super AO is not getting hot the 3 vsb is also not getting hot it's because that's the free B mfet yeah my tester gets hot like warm it gets very hot at one point okay yeah the 5 vsb on my tester got very very hot and you can kill your tester actually with that and you need to be careful of that I don't know which one which component it was exactly but my one of The Regulators got burning hot well I actually just burned my finger I don't know if you can see that probably not visible but there's a spec right there it's a little bit visible yeah I burm myself right there um let's check the the slot on the 24 pin for shorts so let's see now 5 vssb on the 24 pin should be I think one of these two the third and the fourth one I just realized I made a very Rec rookie mistake I confused the 5 vssb for PS on voltage so this pin the fourth pin that I was seeing here um that has high resistance that is PS on and not 5 vsb 5 vsb is the fourth pin from here and as you can see this pin oh you can't see and now as you could see this pin has basically zero this makes it a lot of L lot more sense because before I was like okay how do we have that high of a power consumption when we we have like kiloohms that that cannot be and now it does start to make sense with having zero and having that P of uh power consumption and what we're going to do now is I'm going to be going over to Vol voltage injection so we're going on to one volts I'm going to be starting with that going to be using my tweezers with the power play attached to them and let's see at one volt we already have over an amp and it was Rising very rapidly and quickly so something must be burning like the shot just got worse because it continued to draw more amps I will need to get the camera because I don't want to inject for a long time that kind of voltage and damage anything well the voltage that I inject is not a problem but having that much current pass through there is quite insane to be honest I'm going to have a look at what is on our 5 vsb line and oh let's say we're going to have a look let's get our board view out and let's see as you can see we have 5 VB here this is a capacitor nothing nothing important there's something here that is 5 Vol VB with piece on that is a that is a linear voltage regulator for 3vb as far as it seems and there's another voltage regulator this also seems like a yeah this for the siio volt so let's go uh back onto our overview and let's check some of these regulators and now let's check um this regulator right there regulator seems also be fine let's check this regulator this is for the siio voltage and let's check around the siio but this also looks fine cannot seem to find any shorts on the SI I'm just going around big capacitors around the siio to see if there's anything there getting uh which has low resistance but none of these seem to have a problem with that so um what we're going to do next is I'm going to get the thermal camera we're going to start to inject voltage again and we're going to see how it will behave or what we can see what gets hot so we now have our power supply attached to my probe and we have the thermal camera and now I'm going to inject the voltage and let's see and I think we found our Cor corate this is at 50° right now and let's if I increase the voltage it heats up very very quickly so I think we have a capacitor that is shorted around the Audio I see cuz look at this I'm going to you see my finger I'm going to increase the voltage and let's see here you see that let's go under the microscope and see for that capacitor and it seems to be our little friend over here this capacitor here very very interesting I've never had a shorted capacitor on a mainboard before and then even around the Audio I see that is very we weird so let's quickly see if we can disol that cap and get rid of it or get it out of place and then test it let's see now what we're going to do is we're going to get some solder on both of its sides so we have sold there what we're now going to do I'm going to use the hot air station and I'm going to be using my tweezers to just uh pick it out of position so now the capacitor is not on its place anymore it's not connected to ground and to the supply voltage of that ship anymore and what we're going to do now is we're going to get our overview and our overview for the power supply and as you can see now at 5 volts like it should at vsb we have a little bit of power consumption so so that actually was our short circuit right there I cannot believe it so let's see now um I'm going to build this boort back up and let's see if this starts working now and right now let's see together I'm going to connect the Clum and for standby voltage we still have way too much damn that is very bad I was very confident there for a while I'm actually kind of huh that is very weird we still had very high power consumption on 5 vssb I didn't check if the sh was gone because I was like yeah I've removed the capacitor and I didn't have any more power consumption when I connected up the power suppli so I thought we would be good already but let's see again yeah the resistance is fine actually on 5 vsb but there seems to be yet another problem somewhere very interesting I will what will I do um I will probably I'm kind of scared because of uh my power supply blowing up like my um my tester uh but there shouldn't be any more step standby voltages that should be shorted from the beginning on or that could be shorted from the beginning on and right now you can see me using something else than before we are using a power supply an ATX power supply actually because I think my regulator actually died yeah what can I say the 5 VB was shorted so so badly that my regulator got overdrawn and it killed my regulator well my 12vt adapter and the 5 VP was always shorted on that now um there seems to be no other sh on this main board anymore we actually can power up but the thing is we're stuck on CPU right now this could either be related that the superu isn't recognized by either a broken bios or that there's some knock off components or that this CPU is just not compatible with the BIOS that is on there um so what we're going to do is we're going to switch this up a little bit and let's see this is now the 3000g that has also no reaction that's also CPU light so now we're going to go over to the 2,600 so the 3500 and let's see if this also isn't recognized I would guess that there's physical damage knocked off resistor or something like that any somewhere around the CPU socket and no there's not because the 2,600 X is [Music] booting but we don't have a VGA device in here so what we're going to do is we're going to turn it off going to turn it off by the power supply because my hand was getting burning hot so what we're going to do let's connect this and and we're going to connect this we need a VGA output so we're going to use my small little tester graphics card right here let's connect this up and now let's attach it to the first PCI slot right here and let's see uh we're going to we don't need that anymore the power supply because it's sadly dead so we're going to turn this on and we're going to be hitting this button right there and we had a quick turn on and then turn off again let's see this again we have no reaction to the power button right now let's drain this going to be holding the power button down and we want to drain um the VB line on the power supply you can actually check that with the PCI tester and now it's drained now it's on again and let's see and it instantly went into protection mode because of the uh GPU that we put in here very interesting so let's now see um we're going to be connecting it in a different slot let's connect it in this slot right here and now we need to drain the VB again and now our 3 vsb is drained and now it's turning on so there there might might be something wrong with our uh first PC slot also as well because it had Pro it instantly restarted or not reseted but it instantly shut off as soon as we had something plugged in there and um I would expect to have picture by now because we have AF and we have no posts going any on on there anymore the CPU is getting warm and but we don't have keyboard recognition as well which is very weird let's see if we go into a different USB slot we still have no recognition of that huh I would expect the board by now to be on this seems to be still something wrong here let's try this again let's restart the board so you can see the LEDs are running you cannot see them let me quickly change this but we have no post and let's do that again now you can see the LED is going right there but after the second one of the dam it already shuts off interesting so let's turn this those off completely CU also the PCH has no heat sink on it and it's get quite getting quite warm let's assemble the heat sink for the PCH first again to be very sure that we don't blow that up because of no heat sink um for that I need to disconect connect everything and I'm going to see you as soon as I have that built up again so and right now everything's built up we have the heat sink on there as well let's turn this on once more post codes are running and the LEDs and let's see now we can get a boot out of this thing so we have a very interesting case here as you can see I'm right now in the Bios flasher Neo programmer and what I was um I was about to to flash a bios onto here and I've encounted something so I've now loaded up a bios that I downloaded from um the MSI page and what I wanted to do is to program this and verify this and when I hit write I see with write and verify we get an arrow on this bit here verification error on address at device at the buffer and I've tried this multiple times my connection is good because the IC reads the IC erases but I cannot write to this bit anymore and this bit actually has some information in it as far as it seems with F0 which is not 0 0 are yeah which is not just with z0 so that backs the question of whether the the BIOS chip is actually faulty and I can verify that because I have the same B with a non good working bios chip so what we're going to do is we're going to SW swap the BIOS chips over and we're going to see if that finally brings this B board back to life and right now you can see the change of Chip the chip that we had before was this one and the now in place chip is this one these are two different chips one is wind Bond one is MX I see um I do not know if this works actually I've checked the data she this is also a 1.8 volt CH just like that one they have the same memory capacity and they seem to be the same just from different vendors so I think this should be fine this has a known good bios on it and this one was the one that I couldn't verify is you can see there are still the jumpers on here and let's now together find out if you can chip uh swap out these chips just like that because I have taken this chip from this from the exact same model of mainboard also x370 gaming plus and right now our board is fully built up sadly this time with an normal atex power supply that you can see in the bottom left there because as I said before my adapter sadly died the 5 vsb on it died because of this shorted capacitor that we had right here but I will try to fix that for other videos and what we're going to do now is we're now going to see if this has worked I've now placed into here a different CPU what I've placed is the 2000g and we have connected VJ and let's also get the screen on there we're still going to be looking at the post codes here and let's see if it now works with the different bios chip on here so it now starts up and we get some post codes that's a very good sign because that means we're accessing the BIOS and it looks very good we have re resetting as you can see by the LEDs so that means also our CPU has been recognized I sadly can't show you the power consumption anymore like we had before but this looks very promising this is now on boot and VGA I think we still don't have a picture yet let me connect a keyboard so that I could see if we have any activity on there and we have keyboard connectivity that's a very very good sign because we have actually um numlock on a keyboard that is able to be turned on and off as you can see this is the connected keyboard and it turns on and off and let's see now I'm going to hit um F10 and enter to save the BIOS I hope this works right here and let's see if we can yeah we got a reboot as you can see and let's see if we can get any picture out of this Apu right now because currently we have nothing on our screen so the board is on but we don't have anything on our DVI let's switch to HDMI and see if we can get a signal out of that let's now restart the board ones and now you can see it is restarting let's now see if we get and there it is we get a post very very nice so we've learned that you can swap bios chips and that that other bios chip that we had was probably faulty and now this is posting so let's see if we now get anything out of our PCI because that is the big thing I bought this main board mainly because yes I wanted to repair it but but other than that is that I wanted to get this board to repair a different board that has nonworking PCI and S so this is now the 2,600 and what we're now going to do so we're going to put on this heat sink again and instead of connecting to its onboard HDMI we're going to be connecting through our our video card so let's connect not into this slot because this slot was making problems it's connected to this slot here and now let's try once more turning the power supply on and hitting the power button we now also get post codes as you can see and we have uh the post LEDs running let's see now if we can get a signal and there it is that's very good so the pcie on this one is working as well that's a very good sign so that means that um I will be able to use this board to diagnose the other board and see why that isn't working and we are resetting in BIOS right now oh there it is it is yeah and there is the bio screen that's very good let's now test the lower lowest slot and then we're going to see why in this slot it shuts off automatically let's now turn it off and I will be placing the GPU one slot lower now it's turning back on and now we also have picture out of the lowest slot and let's now see together why it is not wanting to start if we putting it in the top slot so let's see well one one thing that can already say is I saw some physical damage around the slot but let's verify this so we're putting it in and now the power supply is on and I'm going to be hitting the power button now and it doesn't do the thing anymore well done good to know it just posts okay so that issue was a no issue to begin with so what we're going to what I'm going to do next is I'm going to be building this board up going to populate the Run going to get a bigger graphs cut in here and we're going to test if everything's working on this and we now have two passes of Lin pack so that ran through I'm now going to do some test on the GPU and and now also Heaven has passed and this time we have the rx460 in here and that the big big Vega card because as I said my adapter broke and now I can use the setup that I had before and with that I think this repair comes to an end which means this was very interesting to me for me to be honest I learned something new I've never had a shorted capacitor on a mainboard before and and the good thing is it was a very easy shot to find here because this was only a shoted capacitor near the Audio I see so nothing special the audio is also working on this so I'm just going to remove that capacitor completely from the board and it will be fine there will won't be any problems with that anymore and the other thing is that I have never had a broken bios chip uh on the board before I had many many broken bioses but never the chip to be faulty like this like maybe I have boards that have uh broken chips but I've never had it that I actually could say like in this case that the chip was definitely 4y and was not program programmable anymore and didn't verify anymore so I'm very happy with this repair I I was able to learn quite a lot and the good thing is I will be able to use this mainboard now to repair the other main board that I have to see why the PCI slots are not working I don't know if I'm going to make a seate video on that if I'm going to find it and I also will have to repair my adapter also and I don't know if I will make a video on that um but because I don't even know if I can repair it if I can get the chip that has blown on here and yeah but that was all thank you very much for watching thank you very much for tuning in I hope you learned something and this has been main bot medic thank you very much and goodbye

Channel: Mainboard Medic

Views: 5,494

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Id: 5BViR09ss0Y

Length: 27min 26sec (1646 seconds)

Published: Sat Mar 02 2024