SMPS power supply fault finding । SMPS power supply check। part-2 

Very nice video sir thank s

check auxiliary winding diode and chhota capacitor voltage. thanks

@@Unclegyan sirji i check that cap also I find that voltage is around 40to50 varying on small capacitor I checked opto also it's good but output is not getting

high frequency diode कोई भी हो लगा सकते है। धन्यवाद

output side में capacitor या resistance या diode शोर्ट है। चैक करें। धन्यवाद

इस पर वीडियो बना हुआ है। प्लेलिस्ट में चेक करो। धन्यवाद

check Autocoupler voltage

@@Unclegyan dear uncle thanks to reply will inform you sfter checking with thanks and regards

Dear Uncle sir A lot of thanks for reply. our circuit problem when our two smd smalltxr burnt and number not visible. replaced j3y and 2ty txr after that problem arising and low voltage coming while changed 4n60 ..main capicitor and small capacitor .ouput capicitor 1800uf16v and Mbr 20100ct including optocopler and tl 431 all changed. but stll out put comes 5.91dc v. as per your advise optocopler pin 3-4..3.4vdc and pin 1-2....01vdc .I think sir both smd txr right choos or not i do not know. smd connection like this. (1)j3y(npn) (2) 2ty(pnp) base(+dc) Emitter(- dc) main negative collector ....base connected emitter..... collector..connected smd txr base + voltage not showing collector+base voltage going to optocopler pin 3. and collector+ base votage going through smd capicitor and resistance 15000 to 4n60 mosfet source pin. our 4n60 Gate pin main dc plus voltage through 2.20mega ohms resistane. one side resistance connect positive 340 dcv another side Gate pin on this gate pin only getting one volt dc. this is situation sir. pls advise me. if any whattup number pls share. highly requesting if you like. with thanks and regards Satyanarayan 9831847269

सर्किट का डिज़ाइन अलग हो सकता है। पर जांच करने का तरीका यही है। धन्यवाद

SIR, THANK YOU SO MUCH FOR YOUR KAIND INFORMATION 🙏