Dead Dell Alienware Gaming Laptop Repair

here we have a d alware laptop that came in for repair and the laptop came in for no power we already disassembled the board and the board looks something like this and let's go over the board and see what's going on and why the board is not turning on without wasting any time the first thing I do when working on laptops is I checked the DC connector DC power mosfet I start from there or sometimes I do visual inspection maybe we can start with visual inspection why break the rule sometimes we're able to figure out the problem by just doing visual inspection maybe we have a burnt component maybe we have a knocked off component a discolored component corrosion a lot of things you can tell a lot by doing visual inspection before we start the video I want to give a shout out to our sponsor PCB way PCB way is a China shinzan based PCB manufacturer and printed circuit board assembler with more than a decade in the field of PCB prototype and Fabrication they offer a wide variety of services including 3D printing CNC Machining sheet metal fabrication and much more PCB way is committed to meeting all your PCB needs they offer quality on time delivery and competitive pricing one to two layer Bo starts at $5 with 24 hours turnaround get an instant quote by visiting pcb.com or click on the link below and make sure to check them out most of the times you're not able to figure out the problem by just doing visual inspection but it only takes a minute you see I'm just browsing through the board like Superman I do not need to analyze every dot on that board just quick visual inspection I'm not looking for anything specific just anything abnormal that's what I'm looking for those components they all look normal to me okay so the board looks perfect excellent condition right now we do not have any DC connector on the board because the DC connector connects with this where is it it should be labeled as dcn this one is the battery and this one is DC in meter in diet mode look at this a z ohm short 0.00 diet reading voltage drop we have have a short circuit every single Dale Alienware I work on has a short circuit every single one and a lot of them are de the no fix because of CPU problems I do not have much hope for this one but since we're already working on the board let's figure out what's going on usually it's a Dr M that we replace and then it turns out to be a CPU problem even after changing the Dr M laptop will turn on for 3 seconds and then back off I've done this six million times on this channel and it's always a CPU related problem so I do not know why it would be different for this one but we're going to do it anyway since we already started the video we're going to do it anyway we have a marketing company right next door and every time they sell something over the phone they sell something to somebody over the phone they knock on their bench they knock on the wall they tap on the floor they jump and hit their head on the ceiling sometimes I feel like just punching that wall and stick my hand to their office because they can get very loud but what can you do you have to be a good neighbor right now what we're going to do is inject voltage at the shorted drain the one on the left and we got to monitor the board under a thermal camera and see what gets hot usually it's a minimal heat on any one of the Dr mosfets that we see down here usually the faulty mosat is a little bit discolored and the coil also I've shown that in many of the videos I did working on alien Wares but those coils they look they look good I do not see any discoloration and I do not see any discoloration on any one of the Dr mosfets it's always the case when I'm working on those laptops let's go ahead and inject voltage at the short and usually it's a minimal heat spot on any one of the Dr mosfets right under the CPU so our CPU is right here and the Dr mosfets are right here we have 1 2 3 4 five inject voltage I cannot tell if anything got hot it's a very minimal heat I always mention it's a very minimal heat so you have to have ice like a hwk in order to see what I'm talking about I went over this many times when working on video cards and working on thick boards where it's very difficult to see where the heat is coming from but right now I cannot see anything nothing let me me check rest of the board whatever yellow stuff you are seeing right now are reflections and not heat spots if I tilt the camera those heat spots will go away because they are reflections so you have to be able to differentiate between a reflection and a heat spot those are reflections let me increase voltage on my voltage injection tool and have that chice if you do not already have this tool and you are in the same type of business or you are doing this as a hobby you can purchase all your tools from North fix.com add to C check out pay and we almost always ship out same day we carry everything from soldering stations out air stations the microscope original mtech flux braid wake tweezers whatever you want thermal cameras we currently have them out of stock but we have a shipment on the way and I think we just went out of stock on the soldering station the t3b soldering station that comes with two handles and six tips shipment on the way I do not see anything hot on the board let me rotate the board look on the oh whoa whoa whoa whoa I see something right over here what the first time first time in my life I see a short circuit on back of the board on Dale alien right here I think it may be one of the two caps I was pointing right here so it has to be any one of those two caps either one is generating a lot of heat and that's something new on Dale alen it's never ever a short on back of the board it's always front of the board but I'm glad we got it okay so right now we have a couple of options we can inject voltage and a drop of alcohol and see where alcohol will evaporate first or we can use an atomizer or we can just remove the Caps one by one we only have two and we'll take a wild guess let's go that route let's take a wild gas so we can keep the suspense going which one do you think is faulty this one or this one if in fact it's either one of those two which one looks faulty to you place your bets this one all right let's start with this one and let's see meter and diet mode so this one is not the shorted cap whoever placed their bets on this cap you lost let's check this one okay so we still have a short what can you do unless I was pointing at the wrong spot because we have more caps down here maybe I got too excited and I pointed at the wrong spot that guy wanted to escape not today maybe tomorrow we're going to have to go over the fmal camera again just to pinpoint where the short is coming from and then we can narrow it down okay so right here oh I'm at the wrong spot it's not those two but one of those two which one place your bets left or right let's start with this one meter in died mode do we still have a short and we do let's remove the other one and do we still have a short see the short is gone that's the bad guy say hello to the bad guy he wasted our time out and we're done hopefully the laptop Works we're going to go over those caps one more time to make sure we do not have a short circuit meter and diet mode and we do not have a short circuit anymore I'm reading 0.4 voltage drop awesome and if we check here where we initially started we do not have a short anymore and if we flip the board and measure at the DC mosfets where we previously measured right here we should not have a short anymore you see 0.4 voltage drop we did it we did it I'm going to hand the board over to Big Bus to assemble and test and hopefully I have good news for you I'll be back all right we are done with the reassembly and look at this look at this beauty the laptop is working again I mean look at the assembly on this laptop to disassemble and reassemble is a major job but that's what big bus is here for he makes the impossible possible thank you very much big boss boss of all bosses I hope you enjoy the video let me know what you think leave it down in the comments don't forget to like And subscribe and and we'll do something else in the next [Music] video better than [Music] Factory

Channel: NorthridgeFix

Views: 48,446

Keywords: Dell alienware laptop repair, no power laptop repair, dead laptop repair, alienware repair, northridgefix, fix, gaming laptop repair

Id: CeXORkRkrDo

Length: 14min 19sec (859 seconds)

Published: Wed Mar 13 2024