12V Power Supply Repair
12V Power Supply Repair
Fixing a 12 volt power supply that failed after less than a month of powering LED strip.
Don’t forget to like comment and subscribe.
You can also follow me on twitter
https://twitter.com/Eman2000_YT
12V Power Supply Repair
12V Power Supply Repair
Related Posts
About The Author
Agnes Dwi Cahyani
26 Comments
Thank you.
sir eiska ful ripayering in hindi me do sir
Can you link the two 12 volt outputs in parallel to double the amperage and increase the length of led strip you can use?
1-st capacitor is fault, 2-nd capacitor wotking good.
Send it back under warranty. This cost the supplier more for the repair and it is the hope that the quality will rise.
my problem is dc voltage is not fixed value. it is very.. ex: 12V coming to same time 11V , 0V , 3V
thank you
Thanks! Same power supply, same symptom, same bad cap. One was swollen but checked good. The other was as dead as one could get. Probably the cheapest capacitors in the world! Makes me wonder about all of the electrolytics as well as the rest of the parts. Don't think I would leave this power supply running unattended! Thanks again for saving me some time!
Very hard to make affordable repair on these cheap import supplies their mosfet transistors and decent cap replacement prices are worth more than the total price of the supply itself the only people who can make a money worth repair are the people who stock pyle of them old supplies in their basement who can steal parts from the other dead ones ! I hate these switching supplies their in everything we own now in our dishwasher control panel in our fridges , some of them are truly dangerous set themselves on fire when faulty ! The old linear power supplies pre 1990 where the best with a transformer and bridge rectifiers who would last 50 plus years safely all you had to do to maintain them was changing the electrolytic capacitors every 30 years or so or a few diodes !
Fixing cheap Chinese psu's is sooo old now.
Minden ilyen videónál többet érne, ha valahol meg lehetne szerezni ezeknek a tápegységeknek a kapcsolási rajzát.
Most of what you're doing is off camera.
How NOT to repair a power source.
What is a "linthium" source power supply?
There is a orange solder sucker that kind like yours on ebay for 7.95,I talked to a few guys that have your model who are happy with it and bought my orange they say and I love mine perfect everytime,just a thought.
Great repair
Hey can you help me? I have an esr meter.. My caps are all fine.. But for some reason I cant figure out why dc power supply failed. It won't output any voltage 12V dc is now…reading 0.02v dc Mean well refuses to repair it… and despite being expensive it failed in a day… so I am not sure what is wrong with it.. I would be grateful for your help.. Throwing out seems so wasteful
جس بھائی کو جتنی بھی پاور سپلائی چاہیےخود استعمال کرنے کے لئے یا دکان پر بیچنے کے لئے وہ رابطہ کر سکتے ہیں 03336014177
پاور سپلائی سے آپ اپنا سولر کولر رات کو بھی چلا سکتے ہیں ۔یہ پاور سپلائی بہت ہی کم پاور لیتی ہے
پیڈسٹل فین کی جگہ آپ سولر کولراستعمال کریں ۔اور اپنے پیسے بچائیں ۔اور بجلی کے زیادہ بلو ں سے مکمل چھٹکارا حاصل کریں ۔03336014177
Hi. My HP power supply's green light used to light On, now there's not light. It was just plugged in the mains (shut down) and when I woke up there's no more light. What subcomponent should I check first?
God bless, Proverbs 31
Why do you pronounce solder with a silent "L" ?
You might want to check the diod bridge to see if it's leaking ac. That tends to cause this.
Nice video, would have been interesting to see the oscilloscope trace after the repair though.
Can I get blueprint for this circuit, the resistances near first gaint capacitor are blown up, and now I can't even measure it, off course because it's blown up, please help me out here
Man, great video! I learned a lot! So many negative comments. Screw them.
I have a meanwell power supply 12volt 350watt which is dameged mosfet is 60R290p original mosfet. do i can replace mosfet to IRF840?
I want to repair a SMPS for a BR/DVD player. The original mosfet bad was SPP11N80C3. If I don t find that can I use an FQA11N90? The ratings are above a little bit so should be good. (900V instead of 800, 11.4 A instead of 11, only the resistance Rds is on original 0.45 on the other one 0.96) But if the power sustained is not so big should it work? Maybe will not get hot so much. I found a protection diode 1N4742 12V 1W bad also, and I would change the controller too, SSC3S111 just to make sure. The thermal paste was drained out from the heatsink and was a big flame on the drain pin which left a mark on the case, also destroying a part of the wiring. The diode tried to protected it so it blew also . The fuse was also blown. I ve replaced the fuse and it powers up, it stays 10 secs or so it says PROTECTION MODE/ OFF and it shuts down. The voltages are not the one who should be. The other mosfet seems right. The other components seems right I ve measured what I could , don t see anything else wrong.I don t have an osciloscope and ESR . I m still doing this like a hobby , I need to get some good tools in the future. The service manual is here : https://drive.google.com/open?id=1GdO9CzQW9nKLShx4bySaD-AzX-C9Akvp Maybe u take a look when u have time or say an advice on what else to check. It worked for about 10 years without problems standing the test of time. Maybe it worth a try. Thanks!