Gadgetory

we just blew up this 990 FX killer mouth report from asrock I actually lit it on fire is maybe more correct so as you'll see in the b-roll it's actually got some burnt-out traces from the 24-pin power and I'm suspicious I'm not sure if this is from the board from the power supply or from the CPU I have a feeling it's from the motherboard because I tested the CPU and other boards am3+ boards and it worked fine the power supply seems fine I already tested that I'm going to show you in this video how we tested it and so that leaves us with the board and this board is not particularly good it's it's just problematic in a lot of ways and one of them is obviously traces that light on fire apparently so what happened was I was testing this on our open-air bench just like that had the CPU in it I was testing the Wraith cooler this is a couple weeks ago testing the Wraith cooler and before it even got to BIOS I smelled smoke or fire and so normally in the past when I've smelled that it's just dust burning out of the power supply I was a power supply I hadn't used in a while so kind of just figured that was it but nope no BIOS no video tried for a little while touch the pump on the CL see when I was testing that and found that the pump was not powered so either the pump was dead or the board was problematic and we found out it was the bore hit it because it wasn't supplying power to anything and that's because when I took it off the bench and look to the underside that the traces were lit on fire and they definitely smelled like it so we're gonna check out some of the power supply testing that we're doing to basically validate that this thing is is a motherboard problem and for that we have our fancy anti-static proof workbench right here that's what that blue stuff is it's an ESD mat I've got the power supply pin out this is a pin out that shows where the 12 volt lines are three and a half or 3.3 volt lines are rather 5 volt ground all that stuff and I'll be checking that against our power supply with with a multimeter it's got a multimeter got a power supply and we got a paperclip you probably shouldn't pick power supplies up like this by the way so we've got all those I need my my paperclip of course we got the paperclip and this as you probably may have seen an ancient video of ours is used to jump the power supply so you jump a a green and a black pin from the 24 pin header that will start the power supply without actually needing to plug it into a motherboard and hit the power button so for testing the power supply all I'm gonna do is see if the voltage coming out of this 24 pin header is correct is it about 12 volts and the 12 volt lines is about 3.3 the three and is it about 5 volts and the 5 volt lines that's pretty easy to do with colored wires this power supply does not have the colored wires which is really nice aesthetically this is a what animatics has done basically to they've braided their cables so they have braided cables and that means that we need the pin out chart that I have on the wall which you normally don't need of course but we do in this case because we're jumping this with a back with a paperclip so you don't want to jump there on pins make sure you're certain what is the correct pin because if you do the wrong ones you could kill the power supply or hurt yourself and for this one I already know that we're basically starting there's a blank pin over here we're gonna start a few to the right of that just right of the the clip here this little clip that grabs the motherboard so I am gonna plug in our paperclip in the correct green and black and I actually just heard the power supply tick on to me that electrical current tick and normally it's pretty easy to just look at the fan in the power supply and see the fan spins up this animatics power supplies fanless which is great in every instance except this one so we can plug in a 120 millimeter fan I've got plenty of those I'll plug that into the molex and if that spins up we know the power supply is on alright so I've got a fan so 120 millimeter fan we're gonna put that over here and you can see I have kind of jerry-rigged vanes the fan only has a three pin header so I've connected it to a 3 pin 2 molex and I'm going to connect that to the power supply and once we do that I just saw try to spin once we connect that so the fan has spun up that means the power supply is obviously providing power through this jumped pin that's what's triggering the start loops basically electrically it's triggering it to turn on and supply power so now we can take the multimeter set that to voltage DC because everything coming out of this is DC voltage or DC power rather what's coming from the wall is AC or alternating current the power supply converts it to direct current and direct current DC comes out of here so we're talking for DC voltage with a multimeter and I'm just gonna take these probes and then check a ground against a hot wire surrounded check the ground against the three-point-three ground against a five volt i ground against the 12 volt which normally reads between 11 and 12 and with eleven point nine five or something and I know those just from the chart that we have on the wall so I know which pin is what and we'll be able to check the voltage on the readout and see is this power supply providing the correct voltage now a quick note sometimes these power supplies have regulators in them which is a good thing normally but it means that the voltage may not be fully supplied there may actually be no power provided at all if there's no load generated so that's what these fans come in for it will require some kind of kick from the power supply because it's gotta generate over power output its power the fan you can plug in a hard drives if you're not getting power still because those do drop more so that's the process for determining if the power supply is good and this one is and I know the CPU is good because I tested the CPU and other an 3 plus motherboards so we're basically left with the motherboard is awful and burned and dead so that's garbage it will probably end up on a shelf or a wall in the background of the set from now on because it has no functional use left in its life but just a quick insight the how some of the testing goes how it works behind the scenes when we blow stuff up because it does happen quite often and just as a side note ESD by the way is real that's why we have these mats this one's not technically plugged in right now you do basically drive a screw through the mat that connects to a mesh on the inner layer and that helps ground it when you plug the opposite end of the screw which is normally terminates in a power cable into the grounding pin at an outlet we'll talk about that in a future video but that keeps everything safe so we know it was an ESD that killed the motherboard it was just something screwy between the the CV and the board it's if it was an AMD an three-plus very hot cpu so those things are kind of tricky sometimes thank you for watching hit that patreon link commercial video if you want to help us out directly check the links in description below to check out the website and I will see you all next time