MacBook Air 2017, dead with a slight burning smell - LFC
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- Опубліковано 28 лип 2024
- Another MBA today, interesting story behind it, but I'm not sure if it was a coincidence or not. Spoilers below...
-Shorted CPU Vcore input capacitor (fractured from board flex?) causing short on PPBUS_G3H
-PPBUS_G3H fuse blown
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With FlexBV, if you're in the schematic and you want to find where the part is on the boardview, just right click on the part name in the schematic; that's all it'll take.
The searching applies either way ( BV -> schem, or schem -> BV ). Just right click on the part in the BV and top-left of the popup is "Search [part X]".
We'll need to get that OBData set up as well, but that can come later.
Cases like this one just make me appreciate rugged business machines that much more, even if sadly they have mostly gone the way of the dodo. I've seen some crazy stacking action at work.
Measure twice cut once comes to mind. Great video
Had a lot of these boards in the last weeks. Most if them had a blown capacitor like your board. But I have to say, nearly every single one had also a blown fuse! But I was there, several times 😂
Keep up the good work! Really appreciate your effort!
Fantastic video sir. I've been able to repair alot more laptops since looking at your videos. My confidence with my hot air and iron station has grown drastically and also my ability to troubleshoot and diagnose problems have improved as well. Thanks alot for your priceless videos....
I am so loving this this surgical transplant procedure.. You go Graham! 😂😁👍
Great video as always! Thanks a lot for sharing!
Nice vid, 20 min vids r best thanks for your content
Well done Dr. Graham the surgery was a success, and yes quite entertaining and the most humorous procedure done.. "STAB and STAB" Thank you Graham for making my day. ☕😂👍💕
A 'PP Bus G3 Hot' based drinking game would be lethal on this channel....
Still better than Louis Rossman
I definitely enjoy the hour long videos, especially if they're about a custom build.
I actually prefer the 1 hour rabbit hole vids :-)
Yes, they are prone to suddenly shitting the bed so to speak. I have had one weld itself onto the motherboard of a 2016 15" MacBook Pro.
Great video as always
Nice work, always worth the while in checking both ends of a component, could save time later.
Another great video Graham
299 noice. 😁 Thanks for your videos dude 😁👍
Interesting and instructive. Thank you.
Great vid as always.
Thanks to your videos I have far better understanding of what is going on, though I wouldn’t be confident enough to try and fix my iMac if something happened.
Great video as always👍👍
Great fix very informative.
OMG a fuse doing it's job on a macbook, i guess there is a first time for everything. :P
GG, nice fix and nice video!
interesting, btw with the lighting, couldn't see if power was on or off - like a glare or something. Great work on the fast assessment.
Don't worry, Graham; last week I repaired exactly the same A1466 model, with the same failure (burned tantalum cap), and checked only the right side of the fuse. It seems to be a very common mistake.Even Louis Rossman suffered from it...
it helps when the customer gives you accurate information, regarding the smell in this case.
Nice work
all of ur videos r mesmerizing to me,, don't know why...
Nice job sir
8:02 am- Well Good morning to yah Graham, haven't started a pot of my Folgers Coffee yet.. Cheers to your first brew. 😁☕ Work that magic Graham, for we all here in U.S. Brooklyn NY have Faith in you. 🤔Probably a broken, loose wire near the monitor screen.. I think they placed more than just a couple of books on top.😁☕"Cheers"
Always learn a lot from you. So so informative 👌also .... What camera setup do you have ? I am looking to upgrade mine and yours gets right in there👍
Good Job 👍.
Love watching these videos, even though i have no idea what youre saying half of the time lol
I like EEVBlog's screen meter presentations best of those I've seen. Louis'' displays are variable in their reliability. I'll admit I haven't watched many of Paul Daniels' marathons.
14:40 onwards -- It's possible that the solder used to mount an SMD fuse melts at a higher temperature than standard 60/40 or modern lead-free solders do. Having the fuse de-solder itself before it blows is not a good thing.
That is a good thought. However, how likely is it, that such a board would go trough another run of Pick&Place + Reflow just for the fuses (and maybe some other components)? I am asking out of curiosity. Is that really something that is done in motherboard manufaturing?
@@NebukadV I can think of one other apple device that had something similar in terms of solder used and that was the Iphone 10 that used lower melting point solder for its interposer sandwich board construction compared to the rest of the solder used on that board. I think that proves in principal that this can be done at manufacturing so I can imagine that fuses at manufacturing could be soldered with high melting point solder, but I would think it more likely that they would just attach fuses to bigger copper planes to soak excess heat.
It's using the same solder as the rest of the board; the issue is that with these boards there's a massive amount of thermal mass to counter/heat-up first. Even with a 1kW hot air station like the Quick 861DW or Atten it takes time to get that fuse off. Usually we pickle the ends with leaded solder to help it come off quicker.
Macbook boards in general need quite a bit of heat to rework because of the extensive copper flood areas on multiple layers ( conversely, rework an iPhone like that and parts come off in seconds )
@@pldaniels Yeah I thought that was the more likely explanation.
Fellas just so you know for the 1 hour videos there is a chrome extension that lets you play a video at any speed. these days for me 2.6x is rather comfortable for this specific youtuber. Learn a lot quickly!
But there's a playback speed selection in the YT player, ie, the gear symbol.
@@SidneyCritic doesn't allow over 2x, that's why i mentioned it
A few text books = 47 encyclopedias.
Fantastic work! Easy mistake on the fuse ;)
Nice job
I placed a book on top of my mid 2011 MacBook Pro and the screen went green. Didn’t sent the book down hard or anything. Just light weight by mistake. Now I give people heck for stacking stuff on their laptops.
great video graham im not a tech but its interesting and informative ...
when u said "placing few textbooks should not make a huge damage" well..
Back in 2014 I had a macbook pro 2013 and i had it in my luggage (in my suitcase) with textbooks, jeans , shirts etc.
After opening the suitcase after travelling 3 hours in train it was completely BULGED !!!! THE BATTERY PROBABLY EXPLODED !!!!
Ha, I thought I was a little dumb but I am pleased to say I already worked out the fuse was blown in board view since the cap connected to it :-)
"auw! auw! I am a proffesional" that made me laugh.. good job!
I wonder what would have happened if you spotted the fuse right away. Replacing it might have blown it at testing, because the coil was still faulty. Now you figured out both broken components. So it might have been a good thing to make a “mistake” by not testing the fuse the proper way.
You ended up finding the faults in the right order though Graham. Root cause was that cap.
It does not matter that you did not check the fuse, otherwise it burned out to protect the circuit so it wanted a change, not only the fuse, but also what burned out, because it would most likely burn it again if the capacitor had not been changed
When I was learning to repair electronics rule 1 was always check the fuse.
good video
Facinating.
Less time on computer repairs and more time for coffee.
I've learned anything from watching Lewis Rossman it's that MacBook fuses are usually decorative.
"BAM! Bam? Please bam."
yup, I love the 1-hour ones.LOL
Genius.
🎶"warming up the board"🎶
😁☕Graham hey that 2nd cup.
Hi, can you do a vid or share the link of how you made that transistor tester please?
Ah the garden path of discombobulation.
Whats the model number of the transistor tester you used. Looked like a self build kit. Thanks
got an old 15" 2010 i might have to send in sometime, completely stopped charging and refuses to power up, only a green light on magsafe cable and refuses to respond to a SMC reset
What is the best way to shield a PC from the EMP blast resulting from a thermonuclear explosion?
Fridge
toilet bowl lined with aluminum foil
Faraday cage.
Tin foil on head
Anti-glare stick on for multimeter?
Is it possible to change a motherboard battery on any laptop?
I think you need an extended holiday .. your starting to forget things lol
whats that test board you are using when you tested the capacitor?
Can i use the jumper instead of PPBUS_G3H fuse (F7140)
Couldn't you just take out that screen protect Plexiglass? Seem's to be just glued in. Makes it absolutly perfect readable on Camera.
That's definitely something to consider, I shall ponder!
There might be two..🤔
I have sent my 2017 touchbar MBP to more than 17 vendors now and none of them is able to find out the issue. Issue #1 1 out of 2 usb ports not functioning at either side. #Issue 2 able to boot up safe mode but normal mode, it will reach the startup and get stuck at 'Critical Software Update Required'. Tested multiple USB re-installs with Mojave, Big Sur and Monterey with the same results. Touchbar seems to be dead in safe mode.. Appreciate any comments and advise on this (aside to replacing the entire logic board)
I mean a SHORT not a shirt!!
I blame it on my coffee..😂☕
Or just check the fuse directly.
Please give us some info on the make and model number of the capacitance meter you used on this video. Always Thanks!
One of these kits: www.ebay.co.uk/itm/154812401897
I've modified mine with a lipo batt and USB charging, but other than that it's a cheap kit one. There are lots of variations of the "Transistor Tester", but I'm not sure if they all have the same features.
You can check capacitance with most multimeters, but these transistor testers are very good for a poor man's ESR test as well.
🤔☕Burned out graphic card or blown Capacitor?
Good video.
Boardview program is very fantastic, what is name? Thanks
FlexBV, available from pldaniels.com/flexbv/
There is a free alternative called OpenBV which does basic stuff, but lacks the schematic view and built-in measurements plus more than Flex has.
7:40 DUDE NO! V_Core /CPu is shorted to ground wen turned of for protection reasons...its not a short...
You're sort-of right. Vcore doesn't short when turned off, it's just always _low resistance_ , to the tune of 3-4Ohms. However, that low resistance will be _after_ the vcore mosfets, and in this video we're working on input capacitors _before_ the mosfets.
Is boardview by Paul Daniels only useful on repairing macbooks? Is it possible to use with any schematic such as those PDFs we "acquire" online?
Yea, FlexBV can open a lot of stuff - just that board views for other laptops are often very hard to find.
I always get it out for MacBooks though, as they're very well documented, so the board views are easy to find.
Reinforcing what Graham has just said, yes, FlexBV works with most boardview formats and is entirely generic, not being locked to any specific brand or series; in fact, you can create your own boardview files from most PCB/schematic design suites. It is worth noting though that PDFs don't contain the information required to be boardviews ( ie, the iPhone schematics are in PDF of course and they show a part placement diagram in the first two pages, but it's not something that can be used as an actual boardview ).
Essentially boardview files are a long list of 3 main bits of data; pin { name, position, side, part, net }, part { name, position, pins[] }, board outline { position[] }
Hello, Do you give private lessons for beginners ?
I see you use about 2 Pauls of flux.
YES... YES... YES!
I WAS RIGHT... GRAHAM IS TEACHING ME.. WHAT... LET'S CHECK FIR A SHIRT?
hej adam. jag har set dina filmer du är superduktig.. just nu skulle jag behöft din kunskap... blir helt sjukt trött. försöker instalera en skrivare i windows 10. jag håler på gå i taket.. snälla hjälp mig. canon pixma mp210. .. slänger snart utt datorn.
Bro. What camera are you using to show the mother board
Logitech BRIO webcam, with lots of studio lighting.
Off topic - I purchased a USB C / USB 3.x internal PCIe x1 card on a whim for my old motherboard, tried it once with my 960 in the x16 slot covering the 2nd x1 slot, so I used the bottom x1 slot and got a BSOD and gave up. Tbf fair I haven't got the balls to burn what I have to test it further + I got a refund, did you want it [ I'll cover P&P] without caveats or strings, it may make an interesting video.
Appreciate the offer, but I don't think there's much to tell on these - I've always found USB3 add-in cards to be unreliable. Haven't tried a Type-C one, but it sounds like they're the same as always!
@@Adamant_IT Cheers for the response, no worries I'll have re-try one day when upgrade.
could anybody help me plz i need boardview file for this (Sony+VAIO+FLIP+14+SVF14N+(QUANTA+FI2+REV.+1A))
howww, howww, I'm a professional 😉
Why did the fuse blow
Oh the fuse was blown all along
Hy i have question : what can i do when the cpu or the chipset is shorted ?
Silicone like the CPU and chipset will always appear to be shorted due to their low internal resistance. It's a red herring. Use resistance mode, not beep mode, on your multimeter, and you should find they have a few ohms of resistance.
@@Adamant_IT Thank you very much maister !
This is a very common fault on these macbooks👍👍👍
A blown fuse? On a Macbook??? It'a a fake.
if that fuse "always bites me" how have you "never seen" one blow? :)
I mean, I've not done as many of these as a great deal, but I've seen a fair few shorted PPBUS_G3Hs and yea, it seems like the rail will droop to zero before the fuse blows most of the time.
But hey, now I've seen one, I'll probably see many!
1001 ways to kill a computer.
Well that's a first: a fuse actually working on an Apple board >_> :))))
Yes a simple mistake, make big messy
It died like a goblin char on World Of Warcraft long and slow
Sir MacBook Pro a1502 EFI PASSWORD SOLUTION
Wow i like your vedio
Bro I need a small help from u, will u?
"dead as a doodoo"
11:54 🤣
👍👍👍
@Adamant IT you failed one of the most obvious ways of at least finding where the bad component was, smell it, you could have found the area quite quick
Actually I did, and there was no smell! I should've left that bit in though, yea. It's in the screen cut during the moment where I'm looking at the board.