Air Conditioner – Window or Room
Air Conditioning – Central
Fireplace or Chimney
Range or Oven
Refrigerator or Freezer
Water Softener or Hard Water
Door Knob or Latch
Screen or Storm Door
Light Switch or Dimmer
Network or Phone
Paint or Finish
Tile, Stone or Grout
Vinyl or Resilient Flooring
Wallpaper or Wall Covering
Woodwork or Trim
Driveway – Asphalt
Driveway – Concrete or Brick
Switch Mode Power Supply Repair, SMPS
How to repair a switching "switch mode" power supply. See what's involved. Also a brief explanation about the difference between Linear and switch mode power supplies.
fix a power supply
switching power supply repair
switch mode power supply fix
Absolutely the finest teaching around. You have a gift, I wish my instructors would have had even 50 percent of your ability to transfer knowledge in such seamless way. Best on youtube for sure. Thank You!
I'd love to see you (re-)building a scope, especially if it's a Tek.
If I need to replace a through-hole IC, my preferred method is to cut the pins as close to the IC body as possible in order to leave as much of each individual pin in the board as I can, then I simply go round and remove the remains of each pin with tweezers and my iron. Then remove the solder with wick. Using this method lessens the chances of damaging the PCB significantly, it's also a lot easier and faster.
Mr Carelson...did you Test the IC's after Removal? Did you Test the Removed Capacitors? Would like to know what Component/s was causing the Unit not Operate.
The theory part showing the switching vs linear supply was excellent! I get the feeling a 10x more difficult repair would still be nothing for you.
This is the best tutorial about SMPS on utube..thumbs up indeed.
When removing a sus IC just cut it out from the top.
Less heat stress on the copper tracks.
Man, you are the Legend. I've learned a lot. Thanks
Rogerio Lazzari Jr
It would be an interesting challenge to reassemble the oscilloscope and could be a fun video!
Excellent video as always, great information and you make it easy to understand.
Thanks for the tutorial vids. Your explanations are easy to understand.
Best electronics teaching channel I found hands down. I've been repairing electronic devices nearly 40 years full time and there is always something new to learn!! Thank you. 😉
Thank you so much. Amazing! 👏🏿
This is the best explanation I have seen of a SMPS.Thank you
"Bad things happen.. Really bad things" cracked me up lol. Nothing wrong with some magic smoke if done on purpose. ;)
I've watched you use the desoldering device in your videos and was interested whether you have a preferred type to use.
Excellent video as always. Thanks for your time making it, which I'm sure will be appreciated by lots of viewers.
good introduction to their operating fundamentals
Congratulations for your job.The quality of the sound and image are just amazing. Thanks to share with us.
Best explanation of a sm psu thanks
thank you very much for the explanation of how SMPS works i finally did get it
Tnx sir, you shared a very helpful and informative knowledge especially to us who repairs smps powersupply. This very helpful to me sir as electronics technician. Tnx sir for sharing knowledge sir🙂
Always very interesting to watch and very informative. I've been in power electronics all my life but you always teach me something!
Paul another great video. I have really enjoyed your videos and have learned a lot from them. Keep them coming.
Thankyou. This information is like gold dust to Me
Nice de-soldering tool
Dang, you're a teacher.
Great video can't wait to see the oscilloscope repair :-)
Many thanks for your excellent tutorial. I was a TV technician 50 years ago, repairing tvs to component level. Then I moved up to Avionics tech job and later on to an aircraft engineer's job. I retired after 40 years without board level repairs. After retirement I find a pensioner's life extremely hard. I am refreshing my electronics knowledge to be able to repair TVs or Computers.Please keep up the good work. aftab ahmed. London
Very good explanation of the switch mode power supply, especially with your diagram you drew. If not already, you would make an excellent electronics professor. You have a very good teaching method.
Mr. Carlson your videos are great. Do you do medical equipments as well? I'm a medical engineering student and I love what you do.
Just keep coming back to your channel. Informative and I like the longer videos. I understand how much effort goes into your channel.
Thanks for another great video Paul! You're a spectacular teacher. Greetings from Arizona.
13:30 whats a hybrid?
Nice explanation of SMPS, thanks.
Watching these SMPS videos reminds me of my time working at a power supply manufacturers. Testing units from the production line to working with design engineers building their prototypes and developing them to production status. One challenging job I had was developing a 30kV pulse supply to be used on a magnetron. I wasn't privileged enough to know what the final product was (secret stuff). Another excellent video Mr C. and I've watched quite a few of them so far.
Another great one Mr. Carlson, thanks! By the way, did you see my question on your radio video the other day?
SWPS Power Supply is one level up from LCD Display
Hi, Thanks for a good video. Could you tell me what is the vacuum desoldering iron you use?
Excellent video! Well explained, good audio, good vision. Thanks.
Great Video! You explained really well
Harpan Budi Santoso
Nice videos, new knowledge to me. As now I know there is some PS that needed to be loaded to work.
Thanks for taking the mystery out of the infamous switcher. What about the supplies that are in standby and you push a remote switch to turn them fully on? That is my issue at this time.
Really enjoyed this video. I learned a lot about the difference between the types of power supplies, soldering and desoldering, testing the circuit, and general tips and techniques.
Great video, you know your stuff!
Great video. I love the repair and troubleshooting videos. Thank you for all your great work.
Thank for your videos it help me lots now I want you to do for amplifiers
Another great video Mr. Carlson! We use DC SMPS's in our solar smart grid controllers but sometimes they bug out ... not sure if it's our control algos or circuit flaws haha. Let's just say there's a lot of solder / re-soldering to debug *sigh*
We need hardware engineers BTW, do you know anyone? Our job application page: http://bit.ly/2HXWvre
as always, really good and enjoyable videos! this is a great guide to SMP debugging. thanks for making these :) I'm wondering: wouldn't you realistically need to test it under full load before putting it back in, or should it be fairly safe to just use the equipment itself as a load test at this point?
Where could I find more information on how frequency affects transformer design?
In one of your videos I thought I heard you say something like "in the united states..". What is the accent you have when you "soulder"? Canadian? Fargo, NC? Sorry, lol. You are very easy to listen to.
very quality videos! thank u very much sir! keep teaching us!
One of the things when replacing the I.C.s on the vertical board, More for the readers of your tutorials (by the way are outstanding!) is to just clip the topside I.C.s pins with a flush cutter, makes removal of the leads so much easier, and helps to not damage the feedthrough holes too.
Also, Even though you mentioned to have the power supply turned off when you attach your alligator clips , I would suggest rather than the alligator clips is to either use mini grabber clips or use the same method you used to make up pin jacks covered with shrink tubing as your test leads. Your videos are always very instructional. Good job!
As usual, I'm clueless, but his voice is so soothing.
Electronics - it calms even when watching someone else's fixing it. Thx Mr Carlson!
Great tutorial! Can You share information which current limited power supply are You using for AC?
Good Job man, that was Great.
You have a really good understanding of troubleshooting very good job at passing the information to the viewer. Messy soldering. A+- lol
Many thanks great video as always enjoy hanging out with you HI HI 73 Leo k1zek
another gr8 video. thanks. btw what temp do you run your soldering iron at?
Very good explanation! Thank you!
nice and awesome ! can we get a crt tv repair guide also, in such detailed manner ?
Outstanding once again. You are absolutely the best tech and teacher I have ever encountered.
Thanks for enlightening my knowledge :)
Thanks, excellent instructions
Hi there ,
I don't know where to start , so I will start by say Thank You for the video . I never knew which is which and way are the difference between them !!! .
This is one aspect , the other is , and here I will Quote TOM "Very good explanation of the switch mode power supply, especially with your diagram you drew. If not already, you would make an excellent electronics professor. You have a very good teaching method.....
Mr Carlson's Lab I am no electronics expert by a long shot. I have learned so much from YouTube...... You sir are so very talented, and it is a pleasure to watch you work, even if it is above my head. Thanks for the videos."
Excellent video as always, great information and you make it easy to understand."
I can say no more than Thank You and keep up us on post .
P.S. I subscribed of course . LOL.
Thank you !!
Question 1: at the end of the video is a jumper on crocodiles? Question 2: Does the power supply itself turn on (without oscilloscope) when connected to the mains?
What makes the -6.4V out unstable when there is no load?
Speaking of getting shocked, managed to touch 3 400v caps at the same time yesterday. Nice little pick me up after a long day :P wasn't my finest hour.
Nice informative video. Thanks for all the good technique. I only wish you had shown where to attach the mains supply. I'm always intimidated by switching supplies.
23:07 Soldering adjacent pins down one side of an IC one right after another with no "settling time" in between, on a double-sided PCB that requires more heat than a single-sided board would.
Do I *really* have to spell out what I'm perceiving as so *wrong* here? I was puzzled when I saw this, as you are normally so meticulous about such things. Am I missing something special about this particular application that lets you get away with that without wrecking the replacement IC?
Great work, u make things a lot simpler. Just like u all there, keep up...
Awesome video. I'd like to see whole series with more details. Good job.
Great work! Want to collab for PCB videos?
Man, I love this channel. Thanks for showing your technique for removing I.C.'s. They have proved to be a real pain for me in the past. Excellent stuff. Now, where is that old CB power supply I have that does not work?
Great video, as always, Looking forward to the "scope build" . Thanks, Greg
Great video, I have a question, I have an old dell laptop charger which I use for electrolysis but the problem is that it stops working sometimes so I guess there is a surge protector in there. Is there a way to remove this protection and will in doing so make it much more dangerous?
Great video and thanks for the easy to understand words. I always learn a great deal here. Thanx
what i need to do to make mi 12v switching power supply go from the max 14.8v to 15.5?
Absolutely fascinating; the world of electronics and the way YOU present it to us. You are an inspiration at best. Thank you so much. I feel pepped up and positive. Good luck and much love. Cheers! 😊👍
great videos i am learning new things that i have seem to have forgetten. i have a gould advance oscilloscope it did come on but stop any good ideas.
I like you're Agilent U1253B Handheld Digital Multimeter. Cost a lot around $600,-- !
great video as always, what model is your desoldering gun?
So many good hands-on Tips. Awesome.
Thanks for leaving the flux @18:00 minute mark, that helps with making sure what I'm doing is what you are doing.
Great job dude. You have more patience than I do. LOL
Great video on repairing switching mode power supply
Thanks for the video PLEASE i need your Help ....Im looking for a universall Mosfeat Driver Circuit shematic ....for power supply that provide 5V 30A
Bravo Paul. Thank you very much for sharing these awesome videos with us. I do appreciate the time and effort you put in to each and everyone.
All my best.
Interesting video with a clear circuit explanation. Thank you very much. How much time is typically required for such a repair?
wow that oled multimeter display is really something, I had to watch in low res can anyone tell me the make and model?
Nice job again. I was wondering why you don't use a shop air desoldering tool in place of the self-contained Hakko? You have that lovely compressor and they are so much quieter.
all away from norway i Learning abote elecrtoniks, so thanks for that
Allan van der Westhuizen
Thank you for the teaching.
The croc-clips on the -6.4V looked dangerous :-)
That was a very good video, well done.
Oscilloscopes, power supplies, multi-meters, yes please! Thanks for another great video!