Lenovo V155 DC Jack replacement - LFC
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- เผยแพร่เมื่อ 19 ก.ย. 2024
- Good old fashioned soldered DC jack replacement on a modern laptop🙃
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You should try hot air wicking at some point for those through-hole components, add solder and flux to the pad, then roll up a piece of wick or cut it so you have a fine sided edge small enough to enter the hole, hot air the area and push the wick into with some tweezers. At least for me that's the method I finally stuck with.
+1
My favorite methods if you don't have a desoldering gun are:
- Heat the zone with hot air and do a pass with a wick + iron right after, before the board cools off. (bonus points if you have a pair of soldering tweezers instead of the iron, so you can grab the piece of wick with them. It's the method used by NorthridgeFix)
or
- Heat the zone with hot air and use a manual solder pump at the same time (best results overall, but it can onyl be used for holes)
- Also, if the holes are pretty small and don't want to come perfectly clean, I'll do a final pass ONLY with the soldering iron and with the *smallest* tip I have (usually those bent ones used for microsoldering), and use it to poke clean the hole, in a way pretty similar to the method Adamant used in this video with the led feet here, but it works far better and quicker. Be sure that the tip is veeery clean from any solder ofc! So the solder from the hole will want to stick to the tip instead of adding solder to the hole (these are one of those rare cases where I still use a wet sponge to clean the tip)
7:00 Hydrogen and Oxygen. Water molecule is H2O. :)
I like that these jacks are still soldered to the logic boards - makes for some quick/easy income jobs :D
Before I knew very much I found a flux coated length of bare copper wire fed through holes would clear them quite nicely.
Just keep feeding and heating. Snip off the now tinned fed end when the hole is clear. Very gentle with through holes.
But now it's my Hakko. Swapped out a 40 pin VFD with another still in the board in around 10 minutes.
I've come to enjoy your videos.
4got about copper!!! Good one.
I’d really recommend some stainless steel hollow desoldering needles for clearing out any through-hole vias on PCBs if you find yourself messing around with through-hole stuff regularly. They clear out the solder incredibly easily! You can get them in kit form where you get a selection of sizes for all the common via diameters.
Excellent tip... I needed to be re-reminded of that (again). Feel free to take tomorrow off. Cheers
@AdamantIT Use a tailor's head pin to clear the holes. They're small enough to go trough the holes and solder does not stick to them.
My biggest bug bear on repairing laptops is re attaching those bloody wifi cables, getting them to clip back in drives me nuts
Oh Darwin yes!!! Actually partially broke one recently. As you know they are miserable to remove and replace. You always feel you are gong to break it. I didn't realize that the gold ring can actually be lifted off it's little pad. Bit to much side pressure. Now it's a bit wonky and will never be the same.. It works but is tainted forever :\ Moral of the story, at lest mine is not anchored as well as I thought. Cheers
I have in Electronics for 50 years with repairing Camcorders and other high end equipment. All the new equipment for disordering where not available or to expensive to purchase. I used solder wick but before you use the wick I got a small tin of manual paste. Run your wick through the paste and you find it works much better for you. AS a note my first hot air was a hand held pyro pin that I used to years...... Take care Mike
What really works well for me when clearing holes with big thermal masses on them (like on DC-jacks) is "dual wielding". Hold a regular soldering iron to one side of the hole (not dead center, so it does not block the airflow, just on the pad around the hole) and then use the desoldering gun on the other side. That way, you get more heat into the hole and have the solder molten for a little longer, so more of it can come out.
I've used toothpicks in the past, also very small flat blade screwdrivers. You can get very narrow toothpicks, or you can use fine sandpaper to sand a fine point on an ordinary toothpick by rolling the point against the paper.
Good soldering wick and flux will get that cleaned easy. Low melt solder is always good to have handy too
Lenovo are not the only Culprit of Soldering the power jack to the Board , A couple of modern day Asus laptops have Soldered Jacks Also ... PS I hate soldered RAM totally pointless exercise ... Cheers Graham for Vid
Been repairing old laptops for donation and do find your videos helpful!
I have a very fine micro file set that I sometimes use to slightly clean up the holes. Works pretty good.
Well done graham,an exellent job,
Did a similar DC jack replacement, also on a Lenovo laptop. Used the chisel tip soldering iron, but also tried the pencil tip, but the chisel proved better. One thing I could have done when soldering the new jack in, would have been to use a small clip, like an alligator (crocodile to you!) To keep the jack level on the board. Thank you
The upstairs neighbors are moving the bodies.
i usually use a thin stainless steel wire or sewing needle to clear stubborn solder from the hole.
Try forcing the new jack in, then when it's sat at a weird angle, getting a wooden clothes peg around the jack and the board to apply pressure then putting hot air on the underside until the solder melts and it'll all of a sudden drop flat. If you're lucky will be before the clothes peg catches fire, although there will always be some smoke but it's actually quite a nice woody smell.... it's worked a couple of times for me, absolutly fine.
Nice work! Glad the V3 flux arrived safely :) Interested in the differences also
Hey gramham I do have a Lenovo and mine is the gaming type legion 5, I have taken the back cover off to instal a HDD and also fix a battery glitch where the laptop charger didn’t charge battery or run of the battery although their was battery charge, it’s actually simple, all you need to do is disconnect the battery they press and hold the power button for a round about 10 seconds then reconnect the battery and it will work again(pressing the power button while battery disconnected discharges the capacitor), please note I only Instaled the HDD purely for extra storage and not for windows
I love the turbo toothbrush sequence =)
Possible method for removing solder from small via's. I basically do the reverse of the solder-sucker. I get a bit of new solder in the hole (sorry for that visual), heat it to molten (duh) and give it a shot with the Dustoff (air). Oh yeah, DUCK! Seriously, just point it toward the table etc. It should be quite tiny (at least that's what my urologist said. Thank you! I'm hear all week). So ends the "it takes a village tip share". Cheers
😂 16:40 - "Owwwwww" ... oh I've been there... many times
at least that was one of the more commonly available dc jacks... on the E455 for instance they went with the not that easily found dc jack that is combined with a data port. Couldn't find even a single seller with that port over here.
MSI and Clevo also solder DC Jacks. I know as i have two Clevo mainboards with soldered jacks and an MSI GT72 that needs repair at some stage.
Yea, they're nightmares to replace as well, massive connectors designed for hundreds of watts, not like this little 45w thing.
@@Adamant_IT Thing is as more and more laptops move to USB-C PD your going to need to use that Desolder gun more often so you got ahead of the curve really if you look at it. Can not wait for 280w USB-C PD.
they are moveing around a giant piano... XD
I use a dental tool to clear the holes while applying heat. Being stainless the solder doesn't stick to the tool.
3:45 Yes, the soldered RAM along with an added module do indeed run in dual channel mode.
There are some flag-resistor on the pcb to adapt modules from different vendors ( and differenr speeds ) on this model there is not a guide about disabling the onboard ram ( usually at 2666 ) to add a 3200 module using max speed.
2666 dual channel would probably be a lot faster than 3200 single though I'd imagine...
@@Adamant_IT sure... but usually the soldered "array" is a 4gb .. and a lot of customers want an 8gb expansion 4+8 that is not dual channel and not 3200 :( btw great work i very appreciate all your videos
Thats the main reason why i didn't bought ANY newer Lenovo, especially USB-C Type connectors. as you said correctly a pain in the ass.
Nice work and structional video as well. Having different methods can always be helpful.
My plug on my Acer laptop was pushed thru but was on a fly lead, so i had to dig out the plastic under it and used a toothpick to push it foward and hold it so i can Plug the adaptor in the laptop. Now every time it comes out i have to do that. (the little screws that hold the bottom cover on i stripped so that is why i did that to the area under where the adaptor plugs into.
Funny, I also use tooth picks (made from bamboo) for that and it works very good. I taught I was the only one to use this method, that I have discovered it, but it looks like it is not.
14:23 Yeah same, left it on for 2 days. Was wondering what the hot smell was, checked the irons were off, didn't spot the desolderer on though. Its still working however.
nice!! yeah bought time to get some sort of de-soldering kit; working on mini quadcopters; and a lenovo laptop lol E570 type DC power jack position that cable at the proper angle!!
My ThinkPad T430 had the DC jack on a cable. It was easily replaceable, if needed :-)
Now I use a ThinkPad X270 which charges over USB-C :-D
(The X270 can also use the "slim" Lenovo charger, but I prefer USB-C)
sounded like a herd of elephants riding motor bikes, went up stairs and knocked on the door, an elephant wearing a crash helmet answered the door, (sounded better when Alexei Sayle told it)...
The wetting and bonding of solder is provides by flux. Seemingly ridicules amount of flux used by Louis Rrossmann and Alex of Northridgefix is justifiable due to that fact. I think, flux should be present, when the iron tip touch the board. This is a common mistake most of us doing.
Hydrogen, and whatever the other thing is. Brilliant
i use needle 💉 of disposable syringe. it works pretty well.
Now you're thinking outside the toroid. Good tip
holes would have been clean in 10 seconds with wick. large iorn tip and the hot air gun to add heat. do 5 ish of these a day with wick. that de soldering gun looks like hard work to me. top job in the end either way
Hihiihih on my videos usually when looking in to an empty hole i start a zoom ending in a monster inside the hole :)
I still put extremely dirty motherboards through the dishwasher, fantastic method to get rid of nicotine sludge and ground in dust without it filling your lungs! Stick it on a warm cycle for 15 minutes, use a hot air station/hot air gun on a super low setting to fully dry it off, or mist it with 85% IPA and you're good to go in 30 minutes!
Great video as usual. Thank you.
Get a good soldering iron and good wick like Goot wick .. I never have this problem👍
You forget to put back 1 Screw for the fan :O
Nice one, awesome job
I've got a new Lenovo and I'm so scared that I'll have to get this done some day. Wish they made 3rd party magnetic adapters so this doesn't happen
Great video. De-soldering gun kinda sucks tho..
northfix using wicks, at least he said those does a amazin job.
I need to try wicking again. The desoldering gun just makes it so easy - I fumbled a bit in this video because I'd clamped the board in a bad position (should've moved it) that was making it hard to hold the gun straight.
Acer does this aswell. I have an 8th gen i5 with a soldered jack.
ThinkPads had removable dc connectors decade ago
Perhaps confusing a stainless steel tooth pick for a wooden one ?
The stainless steel type works a treat as solder not adhere as easily to it.
Some of the cheap dental flossing type brushes 0.5mm are stainless twisted wire holding the nylon bristles. ( hot air gun makes short work of bristles) when needs must at times.
Enjoying your exploits 😉
10:37 Your flux was gone by this stage. A drop more would have cleared them holes easily.
Double thumbs up! Which reminds me, doctor's appointment tomorrow :O\
Yay someone else has discovered ceramic tweezers :)
Hi, good soldering.
21:33 It's a Lenovo V155-15API if you would like to correct it :D
Nice, cheers
I'm looking forward to the comparison of the genuine and the fake flux...
making babies upstairs lol
Probably the last thing on your list, but a new intro with the new shop would be nice
Yea I really want to get this done - I've been waiting for the new shop to actually be in a presentable state, and about 18 months later it now is.
fun fact: i have an ancient lenovo thinkpad x230, and you can replace the power jack on it
I have Lenovo laptop Ideapad Flex 5 5700u cpu with USB-C charging port but sometimes when charger is plugged in laptop FREEZES and RANDOMLY RESTARTS no BSOD on event viewer can see KERNEL-POWER 41 critical error... What it could be? And how to diagnose that? I've checked software, bios V-in in charger all seems good, that never happens on battery power. Btw you videos as always very clear and explanatory! Thank you so much for the answer Adamant!
I don't have a lot of time on Type-C charging yet... Worth checking if your laptop has separate IO boards with the type-c ports on them though, might be fairly easy to swap in a new IO board and see if that clears it up.
@@Adamant_IT Thank you for you answer, the thing is that the MB only have one USB-C port(soldered) and one barrel port(soldered) to charge and a charger is 20V 3.25A type C... I have read some forums and one commented that his laptop was randomly restarting when his charging cable was connected in some "weird positions", so it could be a faulty cable. Other forums say that it happens when computer enters some power saving states for example S0, others suggested to disable some processor cores in msconfig to halve. I've done all of that but the problem persists. I will try to order barrel charging adapter and run the long test and will report back to you... Hopefully it will help you to solve some related problem in future but for me is still some hardware related mystery problem just for a laptop that I use for studies... (pc model: 14ALC05)
Instead of a toothpick or led terminal, try a sewing needle. Because it is made of steel, the solder will have a hard time sticking to ot.
It would have been easier to apply leaded solder to those joints, in order to lower the melting temperature of the solder. The jack would come off easier.
I think we need to all pitch in and get you some desoldering braid.
I think I actually have some good stuff, I just keep forgetting to put it on the bench. Going to look into it when I do the Fake vs Real Amtech video.
It's the infamous Lenovo something-or-other
I would have blown out the dust from the fan before replacing everything just to stop a return visit.
They moving dead bodies above you lol
I got a newer Ideapad(+usb c chargeport), hope it wont break :) On my girlfriends cheaper ideapad a hinge broke ;(
I'm gonna say 80% of my repairs used to be busted sockets. (retired)
Interesting video as always Graham . Where did you get that screwdriver from?
moving the bodies into the freezer
0:50 Hopefully it wont happen to mine , sometimes i dont fully force the charger all the way , im afraid i might snap it off from the inside😅😅
its funny i see this as my acer nitro 5 uses a soldered on jack
Thanks, good job! You forgot to place the extra memory module back? ;-)
He put it straight back on
It sounds like it's picking the screwdriver and it's a wind day out side. I use a straight pin from a sewing kit instead of a LED. If your still soldering DC jacks to the motherboards, stop doing that and use fly leads, like Graham said.
a stainless steel needle in a cork works well much better than the LED, as solder will not stick to the stainless needle, do not tell the wife you have stolen her needles though :-) you can infact buy the proper tools which are hollow stainless tubes for removing single legs from a holes
I have a new Lenovo Ideapad Gaming 3 and the power plug is one of those rectangular ones they have used for quite some time. No idea how it is connected internally though
Rectangle one is on a fly lead 👍
@@Adamant_IT Good to know, thanks
Some Legion series Power Jacks are soldered on board. If the power port is very close to or between the Network and USB ports at the rear of the notebook, it usually is on board
Lenovo makes prolly the more... Not gonna break from stupidest stuff ever laptops imo. I have a '15 Thinkpad yoga 20C0 here, this thing is solid for 2015 [insert the obvious "I use arch btw" here].
Hello brother, I have a problem with my computer. When I press the power button, it turns on and off quickly. I tried taking out the processor and reinstalling it. I tried a different power supply, I tried a different power cord, and I don’t know what the problem is. Can I communicate with you? Thank you very much
I forgot to try the motherboard outside case I took out a battery and put it back ?? I am asking maybe bios ???
now they are soldering usb c jack for power charging .. small and even more dificult to replace.
Yea... Type C and Power Delivery are great, but they're a step back for durability. I'm hoping that laptops go in the direction of putting the USB ports on IO boards. The Lenovo Yoga series already does this, and so do MacBooks.
Some of the newer (expensive) Lenovo notebooks have a secondary USB-C port that can used for charging as well.
I just replace 3 of this charge port from Lenovo last week, they have a very bad design (maybe they are design to fail, who know oO)
i used a dental pick/hook
I opened a Lenovo recently and the barrel jack was on a flylead with a plug.
Yea I think it's just the IdeaPad series
@@Adamant_IT ah makes sense, weird that they'd do it for some but not all.
Sounds like someone is dragging a body across the floor upstairs, nothing to worry about .
Use 21/23 no injection needle so that solder will not stick to it.
Please use a plastic tool when opening 😔 I belive this is a very nice laptop with carbon fiber + plastic case
Where did you get that power screwdriver? I need one.
Not the cheapest one out there, but it's faster than all the other cheap ones I've tried so far!
SQ-ES126 Smart Screwdriver - sequremall.com/collections/screwdriver/products/electric-screwdriver?ref=fl20o11jut
model no. = one of those XD
Maybe this is a thing mostly found on cheap laptops.
That connector just needs a fat glob of hot glue.
Don't get a D.U.I. (Desoldering Under the Influence) ;-)
i will never buy a lenovo again. Mine is two years old and the case is falling apart. And the ear jack shit it self long ago.
coffins
TS 80/100 are toys 😂😂
Wick is so much better and easier and cleaner then that awful gun.
Lenovo products literally suck, poor design and poor quality, bad communication and bad team.