no problem, it have no difference, fuse can be connected in any line (phase or neutral) because the current have to complete its path in both wires. so the same current flows in both wires but it is much better to use fuse & switches in Phase wire (Live Line)
@@HaseebElectronics my fuse keeps blowing , and I did check the diode with dmm I think faulty diode (multimeter in diode mode red-probe-to-anode black-probe-to-cathode indicates value 0.002 for two diodes and for another two diodes value is 0.523 ,so I doubt two diodes seems faulty ) what is your opinion
I just subscribed to your channel, because in this video, you speak clearly and your approach is logical and well explained. I am a novice and I appreciate very much, what you are doing here. Thank you kindly sir
welcome dear. best regards for your feedback this was a question from my viewer, that he was facing problem in repair so i shared tips for him please accept my best regards
Another fine explanation of a switching power supply! Can't get enough of this my friend. Despite watching many other videos on this topic, I'm not feeling the least sign of boredom. Every new video of yours takes me one step closer to my goal of mastering smps circuits. Though I've improved a lot, still the vast majority of the problems are very difficult to troubleshoot. Thank you for keeping these coming once in a while. Respect 👋
Well done a perfect explanation of the Power Supply Board .couldn't have been better ,from Shrinane the Caribbean South America ,Compliments ACHA ,November 3rd 2021
Your videos are very informative and clear. Please keep creating more videos. I have a problem with my 5kW inverter. It does not switch on and there is a dead short between neutral and ground on the AC output. When AC input is connected, no further damage happens to the board. Please provide some insight on this issue.
🙏आपकी शिक्षा आपको प्रणाम सरजी आपकी तारीफ करे उतनी कम है आपकी शिक्षा से गरिब stundent को बहुत मदतगार मिली है आप हमारे लिये मेहनत करके आच्छी शिक्षा देते है आपको हमारा प्रणाम 🙏
@@HaseebElectronics Masha Allah Allahi Barik Feek But please work on Science of Quran So that Allah awarded knowledge should be used to understand and propagate his religion ... MY LITTLE RESEARCH ON QURAN AND REPLY TO HINDU FRIEND... @teach gamer you should blame yourself. You did not studied correct books.. You have every detail, of your purpose of Creation from the time period ---""there was nothing to this day this hour""--- You have to study Our God the Mighty One initiated Creation by energy of His command/word 2:117 / 36:84...... Creation of Man and man's life, 100s of billions of years ahead, before creation of this universe.... The verse that define world before Big-Bang Universe or decaying material universe 33:72 and 7:172. You have to understand this.... Then program of Creation of 7 skies on 7 different principals of Physics. 41:12 There are universes where thing or lives are permanent and there are universes where everything is temporary and expires. We cannot understand that universe fully living in this universe. It is out of our sciences to understand these all, as said by our God 17:85 / 28:60 / 42:36 we don’t need it too know in this life as told by our God…… Then, creation of this universe 15 billion years back, by big bang from nothingness 2:117 / 51:1-4 / 21:13 / 41:11 and Then Creation of light and fire and creation of Jinns and Angles and then....... 55:14&15 Creation of earth by collision of planet Theia 71:28 and spin and rotation of earth 71:29 and And designing of day and night suitable of human existence 10:6 / 2:164 / 30:23. Then Sending of Irons as meteorites bombardment to be placed in bottom of earth for Gravity and spin 57:25. Bombardment of freezed water meteorites to cool earth and measured water 71:25 / 23:18 Then inorganic earth to organic earth by water and to first sea and life 41:30 / 24:45 / 29:20 / 30:27 / 20:53 Then Preparation of earth for human survival and comfort, this was Dinosaurs period 2:29 Proposal of creation of man before angles 2:30 (creation of earth completed) Then Creation of Adam in Big Bang world 15:26 / 86:16 / 55:14 Then development of Satan which was not before 2:34 / 7:12.... Then Life of Adam AS in Millions of Years in Paradise......2:35 / 7:19.. Specialty of Humans in comparison to other creatures as Angles and Jinns 96:4 / 2:31 Then descending of Adam AS on earth 2:36 / 7:24.... The command to live short time on earth and them again come back 7:25 The Promise to send guidance and religion 2:38...... And since FIRST DAY, He the mighty One is in contact and sending messages/guidance/religion…. We know The Mighty Him by Different religion and different names because of His history of contacts. In different periods, through different people, using different languages, on different locations. The First man Adam AS landed in Srilanka under the promise to contact him on Mount Adam. Proof Mount Adam after his name and Adam AS Crossing to India from Srilanka 17:70... Proof Grave of Adams first Prophet son Sheesh AS in Faizabad UP India..... Since Sheesh AS called in different names in different religion as Saith and Shiva, so Quran address him by his dress/costume as Zul-Kifil (double wrapped in single cloth) 38:48 / 21::85.... What was dress of Shiva?? Noah AS (Manu Smriti) and His flood / Tsunami started from India “”Tanur”” 11:40 / 23:27 SO THE SEQUENCE AND HISTORY TILL NOW, IS EXPLAINED IN QURAN... SO 1 GOD AND ONLY 1 RELIGION 3:38 OUR RETURN TO GOD 67:2 / 21:30 There are many verses that Explains God 2:255 / 5:59 / 11:6 / 50:38 / 7:54 and many..... SO RELIGION ARE PROVED AND GOD IS PROVED AND ISLAM AS HIS FINAL GUIDANCE AS PROMISED.
Clear explanation Mr. Haseeb thank you for your very helpful videos I wish you the best I have a question please is wl341 the same as tl431? Can I replace wl431 with tl431?
Good Work Sir. Please can you make more videos on microwave repair. i dont understand some of the boards(power board+ main board) in the microwave and how to test their components.
perfect. biggest headache is short circuit in parallel lines. one component will become short circuit and it will cause to give beep in all parallel circuit as it is high current area, so we cannot allow to flow more current to allow to heat up that component so there is just one situation to check every component
I think after the bridge, if there is any components are damaged the fuse will not blow because bridge diodes not allow the current to flow in reverse direction to damage the fuse, I think so 🤔 Thanks for the informative video 🙏
you are right, but in fact, when the heavy current surge and voltage stress exceed than the diode's current limit and PIV values, in that case the bridge goes away and it takes fuse with it as well. although there is current surge protection NTC or PTC but sometimes the spikes drive them to catastrophic condition
Chethan S, thanks for asking the question. I was wondering about the same thing. Haseeb Electronics, thanks so much for all your wonderful videos. I’ve been searching the Internet for explanations of the current flow in schematics and how it relates to the parts on the pcb as well as how to follow the traces. Your videos have really helped open some doors into understanding some parts of electronics I was struggling with. All the best to you and take care!
Is it normal for the AC inductor(s) to become hot when the TV is in use? My parents' TV died and I found faulty components on the power board (BN44-00525A). One MOSFET was shorted and it took two diodes and the bridge rectifier chip along with it. After replacing them the TV works fine again, but the inductors next to the AC input become hot during use and I'm afraid there might still be something wrong with it. The TV's metal rear panel above the inductors gets hot to the point where it burns your skin if you touch it for more than a second. The heatsink of the bridge rectifier chip is actually cooler than the inductors. Is this normal? Also thank you for the great video. It helped me find the faulty components.
inductor heating is abnormal condition it means that there is something wrong which is causing to saturate the inductor core. might be improper frequency is saturating the core
@@HaseebElectronics Could it be caused by using the wrong MOSFETs as replacement? I was unable to find the original part, STF13NM60N, in stock locally, so I used AllTransistors to find what I think is a similar part, IPA80R360P7. Perhaps it was not a good choice?
Off topic question....I have a relay on coil side getting 12 volts and the opposite side of coil reading 6 volts? Is this just a normal voltage drop from the resistance of the coil? Or is there supposed to be 12v power feeding both sides of the coil?
Sir, I am from Bangladesh, mei ap ka video dekhtahu and dekhke kuch sikhna chah ta hu. mere ek laptop charger first ac line dene ki bad on ho raha hai us samai par multimeter se check karne ke bad 19volt dikha raha hai but uske bad kahi second ke bad wo apna se volt decrease ho raha hai, that means first time ac dene ke bad me 1st time ek second ke liye wo switching kar ke off ho ja rahaha he, but always ac high volt capacitor me 300+ volt rehta he. kya problem hai sir please kuch tips dijiye.
Very informative video. 👍👍 1) Sir, please make a video about multi output SMPS transformer design like input (+12, 0 volts), output (+20, +12, 0, -12, -20 volts). I try to make it. But when I control the output +12 volts terminal then the -12 volts terminal show -26 volts. But my transformer secondary turn ratio is same for +12, 0, -12 volts. 2) 20sq045 diode can burn pcb by heat description, if it runs it's maximum performance level ? 3) How to remove high frequency noise from the SMPS output ? Thanks. 👍👍🙏🙏
thank you, kindly do video on how to solve undervoltage problem,have power supply for patient monitor which is supposed to give 9 volts but gives 7volts,at 7 volts battery wont charge kindly assist
Sir I have power supply 24v 10Amp it may start for a fraction of a second and than shut down, or it may pulsate trying to start every few seconds and shutting down after a fraction of a second, or it will shut down when I connected with load.. Basically thsi power supply used in CT scan and MRI film printer can you share where is the problem... It will great if you help thank you in advance
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![[409] How to Measure Ripple Voltage on DC Capacitor with Multimeter / How to Check Repples in DC](/img/tr.png)
![Shareปลาวาฬ ส่งท้าย SS1 พาเปียโน ขึ้น Ferrari ก่อนไปขาย แลก Nissan l [Nickynachat]](http://i.ytimg.com/vi/KAknGkTNIvg/mqdefault.jpg)
why fuse is connected in series with neutral line in my smps (foxin 450w) ? Fuse should connect with phase line ?
no problem, it have no difference, fuse can be connected in any line (phase or neutral) because the current have to complete its path in both wires. so the same current flows in both wires
but it is much better to use fuse & switches in Phase wire (Live Line)
@@HaseebElectronics my fuse keeps blowing , and I did check the diode with dmm I think faulty diode (multimeter in diode mode red-probe-to-anode black-probe-to-cathode indicates value 0.002 for two diodes and for another two diodes value is 0.523 ,so I doubt two diodes seems faulty ) what is your opinion
@@aboothahiru6354 in this scenario the diode looks shorted
@@HaseebElectronics if diode is faulty it will keep blown fuse ?
yes
it will
Point to point circuit tracing is always good,well explained the problem by which components probably be faulty.👍
You are a very good teacher, everything explained clearly. Unlike other videos. Thanks.
Very good explanation sir, today icame to know how fuse blow,in different ways, thank you very much 🙏
You are welcome
Well very smart man I learned a lot from you thanks
Very good. Explained very well. Thank you very much.
Excellent stuff. You've really done justice to the circuit. I must say, I like the way you broke it down. Good job.
i am thankful for your valuable feedback
please accept my best regards
Super!Great! So simply explained that everyone has to understand it. You are the best of the best electronics teachers on all of TH-cam!
I just subscribed to your channel, because in this video, you speak clearly and your approach is logical and well explained. I am a novice and I appreciate very much, what you are doing here. Thank you kindly sir
welcome dear.
best regards for your feedback
this was a question from my viewer, that he was facing problem in repair
so i shared tips for him
please accept my best regards
MASHA ALLAH another amazing vlog, made it look easy, a big thumbs up
thanks a lot dear
your training is very simple and superp sir
Another fine explanation of a switching power supply! Can't get enough of this my friend. Despite watching many other videos on this topic, I'm not feeling the least sign of boredom. Every new video of yours takes me one step closer to my goal of mastering smps circuits. Though I've improved a lot, still the vast majority of the problems are very difficult to troubleshoot. Thank you for keeping these coming once in a while. Respect 👋
you re one of the best teacher in internet! your schematics and expanation are simple yet very good to explain!!
best regards and special thanks
Thank you sir, very nice explanation, keep up the good work, i have alot from your channel.
Thankyou for Haseed for sharing your electronic advice. I am in the U.K. and value your time and experience.
most welcome and special thanks
this is easily the best way i've ever been taught or shown electronics thank you so much.
superb and very clear explanation. Thank you sir. I have been watching your series..
What a great way to describe.
Thanks a lot
You are most welcome
بارك الله فيك استاذ على الشرح وسهولة توصيل المعلومة ورمضان كريم وصيام مقبول
السلام عليكم ورحمة الله و بركاته
رمضان مبارك عليكم و علينا
كل عام و أنتم بخير بالصحة و السلامة
New subscriber here. Excellent informative video. Thank you.
most welcome
Well done a perfect explanation of the Power Supply Board .couldn't have been better ,from Shrinane the Caribbean South America ,Compliments ACHA ,November 3rd 2021
Simply great! Every possible scenario explained. My humble thanks. Hopefully with this information that guy can repair his power supply. 👍
best regards and special thanks for appreciating my tips in repair
Walaikum Assalam wr wb. verry verry nice information JazakAllah
Amazing presentation
Big Like 👍
point to point fault tracing in input circuit well explained 👍
t am thankful
First like mashallah excellent informative vedio adorable work best wishes great Vlogs
👍
Excellent information keep sharing
thanks a lot
34 lk bhai 🙋🏻♀️🍫🙏🏻🙏🏻
Very good superb great sharing
Informative upload 👍👌👌👌
Awesome video dear friend!!!
thank you very much my friend you are the best👍..🤛
Lk 37 👍Informative 😊
Color-coding the tracks is very helpful.
I must say excellent explanation. Thank you
best regards
Sir I think You described a great 👍 thanks, really appreciated technical Video You uploaded, very useful for me
Thanks and welcome
Excellent thanks for you nandri
best regards and special thanks
Your videos are very informative and clear. Please keep creating more videos. I have a problem with my 5kW inverter. It does not switch on and there is a dead short between neutral and ground on the AC output. When AC input is connected, no further damage happens to the board. Please provide some insight on this issue.
Thank you for explanation.
You are welcome!
Good CCT Tracing Mathed Excellent
Many many thanks
thanks.waleikh musalam from uganda
Thanks for the explanation 👍
it is my pleasure
🙏आपकी शिक्षा आपको प्रणाम सरजी आपकी तारीफ करे उतनी कम है आपकी शिक्षा से गरिब stundent को बहुत मदतगार मिली है आप हमारे लिये मेहनत करके आच्छी शिक्षा देते है आपको हमारा प्रणाम 🙏
विशेष धन्यवाद और शुभकामनाएं
Maasha’allaah very informative bai big like 👍
Great 👍 sir 👌👌👌
best regards and special thanks
Very good thanks for you 🌹🌹🙏
best regards
Short circuit topic made simple, Great Sir !!
God bless you Sir !
it is my pleasure
Good sharing
Great sir. Thank you so much ❤
Excellent video
thanks a lot
best regards
good teacher ❤
best regards
Nice informative video shared like always. Keep it up bro.
thanks a lot
stay blessed dear brother
Have a nice day best regards
Very good sir
Thanks and welcome
clear explanation
special thanks
Thanks for the knowledge sir
Thanks for sharing good knowledge my friend thanks God help you
Well explained Sir!
Good evening. Nice upload as always dear brother
best regards dear sister
Half watched brother. network gone😂😂
بالتوفيق أخي
اللهم بارك
Superb
thanks a lot dear sister
Very nice
thanks a lot
Nice good information 👍
it is my pleasure
good knowledge you showed so many reason of fuse blowing up
but now I m confused what change??
how to reach and pin point the defective part??
its practical video is coming soon. same fault was in battery charger. i recorded that video, i will upload very soon
@@HaseebElectronics Masha Allah
Allahi Barik Feek
But please work on Science of Quran
So that Allah awarded knowledge should be used to understand and propagate his religion ...
MY LITTLE RESEARCH ON QURAN AND REPLY TO HINDU FRIEND...
@teach gamer you should blame yourself.
You did not studied correct books..
You have every detail, of your purpose of Creation from the time period ---""there was nothing to this day this hour""---
You have to study Our God the Mighty One initiated Creation by energy of His command/word 2:117 / 36:84......
Creation of Man and man's life, 100s of billions of years ahead, before creation of this universe....
The verse that define world before Big-Bang Universe or decaying material universe 33:72 and 7:172.
You have to understand this....
Then program of Creation of 7 skies on 7 different principals of Physics. 41:12
There are universes where thing or lives are permanent and there are universes where everything is temporary and expires.
We cannot understand that universe fully living in this universe.
It is out of our sciences to understand these all, as said by our God 17:85 / 28:60 / 42:36
we don’t need it too know in this life as told by our God……
Then, creation of this universe 15 billion years back, by big bang from nothingness 2:117 / 51:1-4 / 21:13 / 41:11 and
Then Creation of light and fire and creation of Jinns and Angles and then....... 55:14&15
Creation of earth by collision of planet Theia 71:28 and spin and rotation of earth 71:29 and
And designing of day and night suitable of human existence 10:6 / 2:164 / 30:23.
Then Sending of Irons as meteorites bombardment to be placed in bottom of earth for Gravity and spin 57:25.
Bombardment of freezed water meteorites to cool earth and measured water 71:25 / 23:18
Then inorganic earth to organic earth by water and to first sea and life 41:30 / 24:45 / 29:20 / 30:27 / 20:53
Then Preparation of earth for human survival and comfort, this was Dinosaurs period 2:29
Proposal of creation of man before angles 2:30 (creation of earth completed)
Then Creation of Adam in Big Bang world 15:26 / 86:16 / 55:14
Then development of Satan which was not before 2:34 / 7:12....
Then Life of Adam AS in Millions of Years in Paradise......2:35 / 7:19..
Specialty of Humans in comparison to other creatures as Angles and Jinns 96:4 / 2:31
Then descending of Adam AS on earth 2:36 / 7:24....
The command to live short time on earth and them again come back 7:25
The Promise to send guidance and religion 2:38......
And since FIRST DAY, He the mighty One is in contact and sending messages/guidance/religion….
We know The Mighty Him by Different religion and different names because of His history of contacts.
In different periods, through different people, using different languages, on different locations.
The First man Adam AS landed in Srilanka under the promise to contact him on Mount Adam.
Proof Mount Adam after his name and Adam AS Crossing to India from Srilanka 17:70...
Proof Grave of Adams first Prophet son Sheesh AS in Faizabad UP India.....
Since Sheesh AS called in different names in different religion as Saith and Shiva, so Quran address him by his dress/costume as Zul-Kifil (double wrapped in single cloth) 38:48 / 21::85....
What was dress of Shiva??
Noah AS (Manu Smriti) and His flood / Tsunami started from India “”Tanur”” 11:40 / 23:27
SO THE SEQUENCE AND HISTORY TILL NOW, IS EXPLAINED IN QURAN...
SO 1 GOD AND ONLY 1 RELIGION 3:38 OUR RETURN TO GOD 67:2 / 21:30
There are many verses that Explains God 2:255 / 5:59 / 11:6 / 50:38 / 7:54 and many.....
SO RELIGION ARE PROVED AND GOD IS PROVED AND ISLAM AS HIS FINAL GUIDANCE AS PROMISED.
Clear explanation Mr. Haseeb thank you for your very helpful videos I wish you the best
I have a question please is wl341 the same as tl431?
Can I replace wl431 with tl431?
MashAllah great sir
thanks a lot
Good Work Sir. Please can you make more videos on microwave repair. i dont understand some of the boards(power board+ main board) in the microwave and how to test their components.
Nice video
thanks a lot
Great. So …to summarise if anyone of 95% of the components fail in a short state …pop😊so check everything
perfect. biggest headache is short circuit in parallel lines. one component will become short circuit and it will cause to give beep in all parallel circuit
as it is high current area, so we cannot allow to flow more current to allow to heat up that component
so there is just one situation to check every component
Perfect teaching , Thanks
it is my pleasure
Good video. I think my 2 LG TV power supplies both have a failed PWM controller, with output stuck high. Thanks.
Your videos are great. Thank you and subscribed.
Beautiful explain
thanks a lot
Its awesome
thanks a lot
You are great Sir. Sir how to calculate the anode cathode voltage across TL431 in smps circuit. Thanks.
i noted it. i will try my best to explain it as soon as possible
Thank you very much Sir.
Very thankfull sir🙏🙏🙏🤗
best regards dear
Super
thanks a lot
Walikum Salaam Paa Jee
thanks Zargar bhai
Thanks to your informative video
I think after the bridge, if there is any components are damaged the fuse will not blow
because bridge diodes not allow the current to flow in reverse direction to damage the fuse, I think so 🤔
Thanks for the informative video 🙏
you are right,
but in fact, when the heavy current surge and voltage stress exceed than the diode's current limit and PIV values, in that case the bridge goes away and it takes fuse with it as well.
although there is current surge protection NTC or PTC but sometimes the spikes drive them to catastrophic condition
Chethan S, thanks for asking the question. I was wondering about the same thing.
Haseeb Electronics, thanks so much for all your wonderful videos. I’ve been searching the Internet for explanations of the current flow in schematics and how it relates to the parts on the pcb as well as how to follow the traces. Your videos have really helped open some doors into understanding some parts of electronics I was struggling with. All the best to you and take care!
Thanks for your tutoria very very interesting.
How do you select the value of the high frequency spik capacitor
Eccellente video informativo. Grazie 👍
thanks a lot
👍👍👍
Good job
best regards and special thanks
my first check would have been the bridge and the next check would be the switching transistor
exactly, the most common suspect that is MOV, capacitor, Brdige and MOSFET items
و عليكم السلام و رحمة الله و بركاته 😀
Thanks a lot my Dear !
How do we know that capacitor is shorted ? Just by continuity test ?
Very helpful.
Would you make : ATX PSU with Active PFC Tutorial .
Waiting for you.
Thank you
You're welcome
Is it normal for the AC inductor(s) to become hot when the TV is in use? My parents' TV died and I found faulty components on the power board (BN44-00525A). One MOSFET was shorted and it took two diodes and the bridge rectifier chip along with it. After replacing them the TV works fine again, but the inductors next to the AC input become hot during use and I'm afraid there might still be something wrong with it. The TV's metal rear panel above the inductors gets hot to the point where it burns your skin if you touch it for more than a second. The heatsink of the bridge rectifier chip is actually cooler than the inductors. Is this normal?
Also thank you for the great video. It helped me find the faulty components.
inductor heating is abnormal condition
it means that there is something wrong which is causing to saturate the inductor core. might be improper frequency is saturating the core
@@HaseebElectronics Could it be caused by using the wrong MOSFETs as replacement? I was unable to find the original part, STF13NM60N, in stock locally, so I used AllTransistors to find what I think is a similar part, IPA80R360P7. Perhaps it was not a good choice?
Off topic question....I have a relay on coil side getting 12 volts and the opposite side of coil reading 6 volts? Is this just a normal voltage drop from the resistance of the coil? Or is there supposed to be 12v power feeding both sides of the coil?
Thanks sir. Please explain induction cooktop in Preethi pcb board
Thanks sir
Sir, I am from Bangladesh, mei ap ka video dekhtahu and dekhke kuch sikhna chah ta hu. mere ek laptop charger first ac line dene ki bad on ho raha hai us samai par multimeter se check karne ke bad 19volt dikha raha hai but uske bad kahi second ke bad wo apna se volt decrease ho raha hai, that means first time ac dene ke bad me 1st time ek second ke liye wo switching kar ke off ho ja rahaha he, but always ac high volt capacitor me 300+ volt rehta he. kya problem hai sir please kuch tips dijiye.
😍
best regards
Dear brother, Can you please tell how to test the PWM controller in SMPS units? and thanks for this valuable content.
Hi Sir I also have two 40N60 IGBT this does not come up with the 120amps thats specified by the manufacturer. Please advise
👏👏👏👏
Good explained sir can you make videos in urdu sir >?
th-cam.com/video/AlpShbrd6QY/w-d-xo.html
@@HaseebElectronics thanks
Very informative video. 👍👍
1)
Sir, please make a video about multi output SMPS transformer design like input (+12, 0 volts), output (+20, +12, 0, -12, -20 volts).
I try to make it. But when I control the output +12 volts terminal then the -12 volts terminal show -26 volts. But my transformer secondary turn ratio is same for +12, 0, -12 volts.
2)
20sq045 diode can burn pcb by heat description, if it runs it's maximum performance level ?
3)
How to remove high frequency noise from the SMPS output ?
Thanks. 👍👍🙏🙏
Sir what is the ceramic resistant and carbon resistor different
thank you, kindly do video on how to solve undervoltage problem,have power supply for patient monitor which is supposed to give 9 volts but gives 7volts,at 7 volts battery wont charge kindly assist
Sometimes output filters can do that check all capacitor with ESR meter to make sure they are in good working conditions
Sir I have power supply 24v 10Amp it may start for a fraction of a second and than shut down, or it may pulsate trying to start every few seconds and shutting down after a fraction of a second, or it will shut down when I connected with load.. Basically thsi power supply used in CT scan and MRI film printer can you share where is the problem... It will great if you help thank you in advance
Hello sir,i have a fuse burn out issues about SMPS, so how to measure the Class X,MOV and so on cnau give ms instructions details