Correction: The third one (which looks like a transistor /mosfet) is actually called a SHOTTKY BRIDGE RECTIFIER. It looks like a mosfet. But it is not a mosfet or any transistor. Example part no. MBR2020CT, MBR20100CT, U10318 etc. Suggestion: please provide part no of most common items which go bad. Since most of these smps are made in China, and they use chinese components, its difficult to find dataset of those components on the internet. Therefore if you give the part no /equivalent part no of components, then a person can easy check datasheet and buy locally. Example Mosfet D1 3007/3009 etc. You can't even get a datasheet on the internet and neither can you find it easily in local spare shop. Therefore it becomes difficult to confirm an equivalent part which can be used.
My SMPS transistor has some plastic cover attached with thermal paste on it. Should I remove the plastic or should I keep it I am trying to change thermal paste on it so need advice to keep that plastic or just apply on the transistor and touch it to the metel body without plastic
I have a 12v 30 amp psu. Which was blown due to mains voltage fluctuation. 13007 transistors were damaged and I replaced those. But now the output negative and positive are shorted. What could be the problem? I have removed the 3 pin output diodes still shorted. What should I check?
What purpose does connector cn2 in the lower middle of the 24v Board shown at the beginning has? Is it for connecting a Fan? Which components does it need beside this missing part to solder to the Board to have a Fan there?
I am using 12v 30A power supply. recently it become faulty due to output drops. it is showing out put like 7 to 8 v hardly. checked most of the items and nothing found with digital multimeter. what will be the reson?. please reply.
sir one more question ,I have 12v 30 ah power supply, I pill off may be 104 capacitor inside of output 12v+ terminal,I don't remember it,I don't think which one was install ,at fast I install 104 capacitor without line, power supply has run but come out noising and doesn't fan run,I check all component ,but I didn't find any fault component,I checked series line, what can I do sir
Bro my Smps is cooler master and it's got shot circuit due to bijli ..now it's not working any there is no power in it, so can you tell me is it possible to repair it? And if I get it repair will it fuse it again? Please help
Sir igbt 13009(2) tak sub kuch ok h but pulse transformer k baad problem aa rahi h, output led not glow, no output voltage appear, kisi n dc output ki jagah ac connect kar diya jissey fuse blown, mov blown, igbt blown, igbt diode short , resistance 3'3k blown 1k blown . Sub kuch kar diya but pulse not shown. Pls suggest me . Thankx.
Sir mere pass same smps hai. 240 v by 24 vdc ka lekin output me sirf 6 volts aata hai. Aapne jaise kaha waise saare mosfet b barabar hai. Kya check karu. Plz bataye
Thank u My 12v 20a power supply connected to 12 v battery and now the power supply Not working but green light glowing what may be the reason and how to repair .
Hello sir asalawalekum bhai jaan ..mere pass ek cstmr ka 12 volt 30 ampere smps aaya mene usko cheak kiya d13009k mosfet open the wo change kiye uske baad drive volt pr c1815 trasister change kiye 2.2 ohm drive signle resistance change ki ur uske baad supply ok ho gyi 12 volt output b de raha h ur chal b raha h pr samasya ye hai k jaise hi uske upr load dala jata h to thodi der chalne k baad uske d13009 mosfet burn ho rhe h ur ye 3 baar ho chuka h teeno baar mene mosfet chnge kiye har cheez baari baari cheak ki pr problum smj nai aayi plzz meri help kare esa ku ho raha h sir
Mere paas bhi ek esa hi smps supply h Jo । Kuch problem kr raha h । Ki on krte h to sahi volt show karta h lekin usme koi LED board connect krte h to uska volt 14 se 9 volt rah jata h । Kya problem h samajh nhi aa raha plz reply kare
last ka jo do MOSFET hai uss me se ek kharap hai app check karke usko replace karo. and uske age jo resistor hai uska valo check kar lena unsolder karke. agar value proper nahi hai to resistor bhi replace karna parega
I brought new Schneider 24v dc smps But my friend kept it in 110v in and switched ON once indicator comes and totally off now it is not working, how canI check it Dada..?
Hello g, mere pass ak smps hai repair kiya volt 12 k badle me 8/9 volt banta hai jab load dete hai tab voltage drop ho kar 1/1.5 volt ho jata hai, mai check kiya sab OK hai but mosfet kharab hai to kawan sa mosfet lagaye No. Kya hoga plz send me....
Sir I have 12v 30 ah power supply,at fast it has problem power off,I check all component, but I has find someone problem ,2 transistor,big capacitor beside which 150k resistor,and 472 1 kv capacitor.i use 120k resistor , change transistor.472 1kv I don't get then I use 472 2kv capacitor,now power supply power on but fan isn't running,and so many noising.
Sir I checked with the series line This problem came out after being checked, I checked the output voltage the voltage is variable but noising and the fan is not working
Mera New 24 Volt 5 Amps SMPS Me Bridge Rectifire ke baad jo blue color ki do capacitor hai, unme se ek jal gaya hai aur fuse blow ho gaya hai . Kya problem ho sakta hai?? मेरा नया एसएमपीएस में , ब्रिज रेक्टिफिरे के बाद जो दो ब्लू कलर के कपैसिटर है, उनमें से एक जल गया और फ्यूज जल गया है, क्या प्रॉब्लम हो सकता है?
Vir mare pas distv ka set top box hai usme 3v,12v,5,&24 v ka pin hai Muje 24 volt ka use karna hai. Job mai smps ka sara pin nikal kar use leta hu tob beling karta hai. Lekin smps ka sara pin dushri pcb par laga kar 24 volt use leta hu tab beling nahi karta hai. Kia karna hoga. Batana plz?
Sir mere pass ek smps hain uska problem asa a raha hain kye voltage a raha hain lekin jab loud de raha hun tab light blinking kar raha hain or chal nehi raha hain kese thik kare sir??
Sir mere pass 12 volt 30 amp ka amps hai wo 4 volt de raha hai tl494 bhee new laga di 13009 bhee new laga diye driver bhee new laga k dekha lekin same problem vr bhee new laga di vr Kam he nahi Kar raha hai volt 4 volt se zada nahi ho rahe please help me sir PIN number 12 or 7 pe supply bhee ok hai pin number 13 or 14 pe 5 volt ki supply bhee ok hai sir please help me
I need SR504 , SR 5100 diodes and K4085 N- channel Mosfet for my SMPS. If you can get me quote the price; If any equivalent for these above also ok. Only on hearing from you I will inform you the quantity.
