Big Wifi Chip soldering - Segger RS9113
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- เผยแพร่เมื่อ 22 เม.ย. 2022
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Really amazing to witness you stepping way out of your comfort zone into the world of macroscopic soldering...
😂😂😂
Tremendous hahaha :D
Alex you are an inspiration. Love your videos, going through them all. I wonder what my grandad would have made of modern electronics, he used to fix radios and TV’s in the 1940’s with valves which he used to buy from old wartime radar equipment shops in London. I’m watching and learning so I can fix my own electronics to stop sending electronics to landfill. Hope you see this on an old video of yours but I had to make a comment after seeing you do a repair on a very difficult board. All the best from the UK❤
I can really hear that you love your work, every repair and video is so satisfying to watch. Everyone should work like this, and be proud of the work that they do!
As on a daily basis of using those modules (called as SoC System on Chip), i would have done a bit differently. Remove all the pins and keep the breakout board on a reflow hot plate. Use tweezers and remove like you did. Clean the solder and use solder paste and reflow it using hot plate. In any case, you did an awesome job. I theoretically knew it is possible with hot air rework station but too scared to attempt your way. It's the most riskiest and often causes bridges or shifting of topmost board.
This is not a SOC. SOCs are singular chips like any ARM SOC (Smartphone "CPU") or Intel Quark; this is on the other hand is a SOM, i.e. System on Module, as it has multiple chips (Wifi, PMIC, etc.) and other components (Rs, Cs & Ls) on there as well.
The whole module is (by Alex) then soldered on a carrier board making it an pinheader add-on board for whatever solution (e.g. Raspberry Pi). You can call that a module as well, if you like.
These SOMs are (somewhat) a pain when put through reflow oven, because components, especially BGA ones have temperature curves and allowed amounts of reheating among other things like solder paste film thickness.
Sorry being nitpicky but I work with both on a daily basis.
I almost confused the 2 types of joints…
I’m happy you’re in the habit of the soldering joint and not the other.
Yet, you Seam always high, laid back, joyful, pleasant, in good spirits, sharp, equanimous, exuberant etc.
It’s an honour to spot a spirit like yours.
When I have to remove a large device like this with accessible pins I always flow low melt solder into all of the pins around the perimeter of the device. Although you still have to apply heat to release the hidden grounding pads the job is much easier
NorthridgeFix: When I was in my early 20s I worked for a while chipping XBOX/PS2's. Now I'm 39 and I'm watching you do your magic for relaxation :)
Needless to say, your content is amazing. Thank you!
This is coming from an old guy that has built everything from bicycles to ships. You have a nice touch sir and I have really enjoyed learning from you.
You are a drug dealer Alex and I'm addicted to your videos and how you do your work!
Your are simply a magician man!
We send our love to you from
🇮🇷🇮🇷🇮🇷TEHRAN IRAN🇮🇷🇮🇷🇮🇷
Hope you and your beautiful family stay healthy for ever...
Ps. Say hi and good dancing to big boss!
I just see his dance with Michael Jackson music and such beautiful smile on your face man!
Great job Alex as always very professional and practical
It´s amazing to see your experience working ! Excellent job !
Now the only soldering i really do is for building FPV drones and RC planes but I keep learning techniques that apply to even the big stuff I do. Thank you for also showing difficult stuff like this.
You make it look easy Alex! Great repair!
Thank u Alex for taking ur time and making these awesome videos.
Mashallah, a true master in his work. May God bless you with more success
Simply Master of masters!!! Thank you for the time you spent sharing your knowledge.....
I think heating from the bottom vould have worked. Those legs are super easy to get replacements and install if necessary, and on many of them the plastic grommets can come off fairly easy as well. Either way, you got it done and it looks perfect. Love watching you work
Jon Stewart does it again!
Nice repair way more patience then I guess I need to work on that. I have switched over to the amtec 559 flux. I use to use the dispenser pens but the newest LF formulation sucks, must be water soluble. Thanks for the tips
great job alex weather its small or big you nailed it
I just found your channel. Very enjoyable watching you repairing electronics. You really do have to have some skill to do this type of job.
Lovely job Alex
Your works are just smooth like BUTTER
You don't need to smoke when you work all days with soldering 🤣✌️
Ohhhh how satisfying. Very very satisfaying. Your skills are really amazing. I love to see you working on that special stuff. Very very nice work, good video. Greets
Alex Enjoying his work 👍
Perfect job !
Beautiful job!
Those kind of WiFi-chips are usually a whole mini-computer in a single package... it contains a tiny CPU, some RAM, some flash memory, and the actual WiFi module. Chips like these are used on IoT devices like smart light bulbs. The "Mainboard" the chip is soldered to is likely either a developer-board for creating your own WiFi-controlled smart device, or it sockets into whatever device is being controlled by this module. This must be a very special module for a repair to be economic, usually these kind of modules are very cheap
All true. And it is astonishing how many megabytes of RAM or Flash memory some of these modules cram in such a tiny space.
10:54 That was truly satisfying 😍😍😊
Very nice job.
Thanks
Very good job as always.
Wouldn't it have been easier to desolder the pins to heat it up from the bottom ? Assuming you had a way to mount it of course
Exactly what i would have done
You should've applied low melt solder i guess to pull that chip easily. Again great videos as alwyas Alex
Awesome job 👍
As always, an amazing job & video! Thank you! Now you have a subscriber more :)
great job i love soldering too :-) i quit smoking 6 months ago and am loving it and not looking back
Elegant precision.
19:58 I've enjoyed that part...... Your're Amazing bro....Take my Love from Bangladesh.
peas of art i enjoy the amazing work
Amazing job Alex ! I watched it again lol
Big love of your work froum algeria 🇩🇿
That kind of module is a PCB with "castellated pads" - It contains a lot of circuitry, not only a chip.
Excellent job n very satisfying.
That's 100% gonna bounce back
wow .. just wow all i can say .. great work
good job mate.
A wifi/bt/ZigBee module! Interesting product!
Man, the know-it-all scientist are active and coming out of the woodwork in this joint today!
Remove connectors...and underheat...hehehe...
Love your cannel!
I would love to see a live stream camera of the shop. Just to drop in and watch live repairs.
Amazing videos love your channel.
Maybe think of creating a course online to teach soldering, how to solder? Flux or solder or both? Ways to solder and smb too.
Teach how to check components how to measure and so on you know everything you need to know to start doing things like that
Thanks for your time to making videos for us
soooo satisfying 😍
Nice video👍🏻
when your cleaning up the flux at the end of the video with the brush, what is that white cloth you use?
working ur magic.....Great video
Love this channel..great content..
That was intense... mega skills
That plastic on the backside headers pulls straight off.
The board is called a "Daughter" board. It fixes to the motherboard. What I do is heat the underside of the motherboard with your IR heater and then apply extra heat to remove the daughter board.
Looks like an raspPI
@@CrAzZyTheCodingBoss it's says so right on the PCB what it's for (some RTOS soultion) not RaspPi compatible.
Hi from Portugal, I really love your videos, keep the great work! can I ask what type of paper/cloth you use at the end to clean the flux? I saw it on a bunch of your videos but never actually found any reference to it. Best regards
Really amazing job bro keep rocking bro 👍👍👍
Still halfway through the video, why don’t you use low melt solder on the castellated pins + hot air to the thermal pads?
awesome
Alex, your solder wick sucks! And I mean that in a really good way. Love the stuff!😀
you could use a pair of cotton swab sticks like chop sticks to hold the chip. being careful of coarse but its something that would make it easier to move the chip
Great work Alex! .. how you make sure that no bridges are formed under the chip?
Awesome video!
The only question that I have is how do you know that there's no bridges under the chip?
That is my biggest concern.
Thanks
In this case all the bottom BGA blobs connect to a single pad - remember the continuity test earlier?
So thats ONE thing less to worry about - but I DO need to watch quite a few of these before trying it myself!!
Hello. I have used
(IpaClean isopropanol) IPA.
It does not clean away solder flux so well. often you spread it around on the card. in my case it takes flux badly.
On the underside of the PCB. card on fiberglass card, acetone is good. but acetone takes away the writing on components such as electrolyte capacitors and color rings on the resistor.
what is your opinion on this??
Well the first time I've ever heard someone didn't have big enough tweezers even though I'm not a computer board guy or micro solder sounds like you need bigger pliers LOL so yes I do know how to do electronics I just don't need microscopes LOL
Too much solder on the pads underneath. I also would have not reflowed the outer pins and just soldered them individually like you ended up doing. You can also solder a few edge points before you reflow to keep the board aligned.
Alex This shows the power of your soldering iron…this is a drone motherboard i repaired them alot as they fell alot and can me damage easily….i use 200Watt soldering iron specially for this job as my tiny C210 soldering iron does not work on this thick pcb.
I have small c210 and a t12 station for bigger fatter tips
Weller WX series
200W? You don't need that much, it's all about heat transfer capability of your tip.
@@filips7158 if pcb is thick then u need more watts because higher temperature destroy the tip very fast and the pads aswell (higher temp is used for touchup only )…if you see Alex soldering iron the tip is always shining…
@@joshuabest100 c210 is very good for iphone and specially for micro jumpers…for big pcb i use handskit 200w iron 🤓
I love to see this kind of soldering! But, aren't you worried that, if a blob of solder comes out from under the board, the contact patches under the board are bridged?
Challenging job done well
what would be the charge for a job like this?
Question, what general purpose soldier would you recommend?
I know there are different thicknesses, I know there is active, mildly reactive, etc but even the brands like Kester which folks recommend still have 15+ types of soldier.
Maybe its obvious to folks experienced with soldier but as someone getting their foot into the door and enjoying it, there just seems to be no difference. I was using silver wire to soldier, I like it, but expensive for practicing.
northridgefix.com/product/best-solder-wire-roll-100g-0-3mm/ That's what I use. Amazing solder and leaves a shinny healthy finish.
Very nice sir🤓
How can you be so sure that the pads underneath the chip are not shorted out by solder melt?
they all connect as one, so you can't short them. he tests at the beginning of the video
They are all ground. You can make bridges, no problem.
How did you clean the PCB after that much of flux ?
What cause flux become brown? solder tip temperature too hot?
That thing was so big we could almost call it a welding job!
I am sure you can get two of those modules new for less than a profecinals charge to replace the chip.
I stand corrected. Them are pricy
Challengers are always good.
10 minutes in; remove the lead free solder! Add leaded solder.
Nice
Hello sir , I like when you post videos mid day I know it takes a lot work just to edit and upload but I’m 4 time zones from you ! and I will have to wait till like 1am just waiting for post ? Best of wishes and May these repairs come east for you
For huge chips I use a pair of sklar medical curved forcep, tbh I have two size for up tp 4+ cm of opening and grabbing ... Precious tools
This seems to be an esp32 microcontroller or maybe something like it?
Nothing like a challenge to sharpen your skills and I would like to know how do you know the solder doesn’t bridge underneath the chip?
I am wondering the same. Also I would have used a little bit less solder for those underneath pads. When the solder blob came out at the side, I would've been scared enough to re-do the whole thing a second time.
On the underside of this chip, it's fine if the solder bridges -- those pads are all connected (bridged) anyway.
عمل احترافي ما شاء الله
Great that despite all those years Alex hasn't developed a "chip on his shoulder"
5:29 390 °C is NOT low heat. It is way above what any datasheet recommends for reflow soldering. But I gotta admit it's a nasty footprint, maybe better suited for solder paste
I thought he would go straight to using low melt solder since it is so big with small components near by and plastic.
16:20 better thing than solid moment
Came in for Wi-Fi module replacement
Stayed for the joint jokes
what is the point of NC pins? I've never understood those...
nice Vedio ☮️👍
Awesome ✌🏻✌🏻✌🏻
Smoke solder every day!
Alex, why not remove the simple header beforehand? Heating from the bottom seems to be the way to go fopr me. But I'm an amateur... Thank you! All the best, Job