{518} Inverter Welding Machine Repair Course / How To Repair Inverter IGBT Welding Machine
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- Опубликовано: 25 авг 2024
- in this video {518} Inverter Welding Machine Repair Course / How To Repair #Inverter IGBT #Welding / welder #Machine / i demonstrated how to troubleshoot and repair the low voltage power supply in the inverter welding machine mma-200. its inrush protection bypass relay found faulty due to its coil winding open circuit. that was not shifting the relay armature contacts. so the machine was being operated on PTC all the time. i removed alll existing solder on high frequency smsps transformer, mosfet and the smps circuit. this solder was removed to remove dry solder joints and performed fresh soldering. then powered ON, the smps circuit started switching with only 3 volt dc instead of 24 volts. then i discovered that there a diode RCD snubber circuit was shorted between cathode and anode. i replaced that diode i got 24 volt on relay coil input terminals, and the welding machine started working.
in this way we can recover a dead welding machine
in video number 515 i shared part-2 of the welding machine repair course.
in part-1 of this course video number 514 ( • {514} Inverter Welding... ) i discussed Input Rectifier Circuit Explained & Troubleshooting. and this session i discussed full bridge / switching topology. it takes +330 vdc from dc rail, and drive from the pulse transformer which is driven the control card, this full bridge IGBTs will drive the power transfomer to produce output voltage, these output voltage will then rectified by full wave rectifier and will appear on output electrodes. control card will control and limit the duty cycle to limit the conduction of IGBTs to limit the current in the output terminal. the amount of flowing current in IGBTs and primary side of the transformer will translated into corresponding voltage by means of current transformer (CT). the output of the ct will then reach to control card, the control card will compare this CT voltage value and the required current value (in from of the tapped voltage by the current adjusting potentiometer on the front panel), and after comparing these both values the PWM controller UC3846 will adjust its duty cycle.
circuit diagram and how to repair mma-200 or mma200 mma250, mma160 and troubleshoot inverter IGBT based welding maching. this china MMA-200T Inverter IGBT Welder Machine - Circuit Explained & Troubleshooting Part -1, is single phase 220 VAC operated. it have a bridge rectifier which rectifies the main ac voltage into dc voltage, which are connected to pair of dc capacitors through a relay contacts and in parallel 110 ohms ntc resistor. this nts protects from inrush current and upon receiving relay drive signal it switches the rectified voltage to capacitors so, the ntc is bypassed to get full current to drive igbt.
after watching this video you will learn:-
how to #repair #inverter #igbt #welding machine or welder
2. functional description of inverter igbt welder machine
3. how to troubleshoot arc welding machine
4. how to understand mma-200 circuit diagram and how it works
5. if welding machine does not work, how you will repair
6. if main circuit breaker trips off when power switch is turned on
7. over current OC LED light turns on
To watch this video in Urdu / Hindi on @Haseeb Electronics Urdu • #90 Inverter IGBT Weld...
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RUclips / @haseebelectronics
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Наука
thanks for sharing this video..
jazaak Allah khair
ماشاءاللہ زبردست
thanks imran bhai
Great job
Really great!!! Thanks a lot.
You are welcome!
Good sharing
De nuevo, muchas gracias, excelente video, saludos desde Venezuela!!!
Good work
selamunaleykum sizin anlatımınıza hayranım hellal olsun 56 yaşındayım ingilizcem yok bu güne kadar okullarda bu açıklıkla anlatan prof ve doçent görmedim helal olsun sana
aleyküm selam efendim. değerli yorumun için tebrik ederim İlmi yayma çabalarımı sevmen senin büyüklüğündür. Allah korusun
Happy Sunday brother. Great sharing
thanks a lot dear sister
Very useful information great sharing
thanks a lot dear sister
Thank you Sir for sharing...
So nice of you
Keep sharing Weldon bahi
best regards and special thanks
Terima kasih berbagi cara cek dan menganalisa segala kerusakan
untuk bisa dipulihkan kembali
Great Sharing 👌👌👍👍👍❤
Love your content! And you speak english as well. Thank you so much!
MasaAllah
Great information bahi sub
thanks a lot my dear sister
Awesome & Beautiful Work Dear Brother Liked Very Much # 108
Thank you so much 😀 bhai Ji
Great video
best regards and special thanks
Great work👍
Nicely explained
Excellent 👋
Nice work my brother beautiful job 👌 give you bigger 👍
thanks a lot dear brother
Hi friend thanks for the informative video
best regards
you are soo kind person, learing us electronics for free thank you sir!
You are very welcome
Sir app English language sa achha Hindi ma samajh aata ha phir bhi excellent video
thanks a lot dear brother
hindi urdu mein mein apni sabhi bhaion keliey urdu channel (haseeb electronics urdu) per share karta hoon
Thank u this was very clear .keep up the gud work
Excellent information
best regards and special thanks
Such a wonderful upload
Thanks for sharing
Great video engineer well explained
Hi sir...,it's a good practical experience. Thank you very much. Have a great day 🙏
best regards and special thanks 💕
Sir good practical experience with explaining very well.i like so much
it is my pleasure
best regards
Thankyou very much, just the information, I was looking for.
it is my pleasure
ThankyouSri🙏
best regards and special thanks
Very beneficial video
special thanks and most welcome
very informative i will try the step by step that you did♥️♥️♥️amazing
it is my pleasure
wooooooooow superb sharing
informative video
Very detailed! Thank very much sir.
wow so informative video thanks for sharing
Good Morning Haseeb ji 🙏
Bahut faydemand tutorial hai..waise mujhe to Kuchh samajh nahi aata ..par isse jude logo ke liye helpful hai
Keep sharing 🙏
Regards 🙏
i am thankful for your valuable message. aap chahein to meri videos na bhi dekhien to koi baat nahi. jin ko mein ne subscribe kia hota he, jab un ki video mere saamney aa jaaey to dekh leta hoon. stay blessed
Big like to see you my dear 😘
Thank you sir! Very informative!
Salam brother how are you brother full watching good 👍 work and telling brother 🇺🇸👍👍👍
thanks a lot dear sister
Thank you for sharing your knowledge, very appreciated.
please accept my best regards for your valuable appreciation
Nice 👍
good
Great lesson. Thanks a lot
You are welcome!
Thanks for explaining everything so well. Watching the whole video.
thanks a lot dear sister
aap complete na bhi dekhien to koi baat nahi
aap ka comment he kaafi he
@@HaseebElectronics mery achy Bhai aap ka bahut Bahut shukrya lekin mery paas Full view ky lye time hota h
bs aap bhi mery ghar aty raha krn plz
excellent
Many many thanks
Assalamo alaikum
Gr8 informative video
Stay blessed❤🌹
wa alaikum salaam
best regards dear sister
You explained all this very well. Thumbs up and subscribed.!
i am thankful for your valuable presence
Nice information
thanks a lot
Beautiyful
thanks a lot
Nice
Aslam U Alaikum
Ma Sha Allah
Superb amazing
Thanks for sharing with us
Lots of love from USA 🇺🇸
Thanks and welcome
best regards for your valuable comment
lk bro🌷Great helpful sharing
Very nice tutorial
Very helpful 👍
thanks a lot
You are a wonderful teacher, teach so thoroughly. Learning a lot from you.
Can you tell which 16 pin microcontroller IC is used in the PCB for induction cooktop,
HIGHWAY15-16C
thanks for your valuable comment
Great it worked :-)
Very good and useful information sir thanks for sharing this knowledge to us
Most welcome bhai ji
ماشاءاللہ ماشاءاللہ بھائی
❤️❤️❤️
thanks a lot bhai
Fantastic! We are a Miller Service Center as well as bench repair service. I've been an electrician for 49 years starting from the ground up and never miss an opportunity to learn! Even as a student/ instructor in the electrical trades fields there has never been an instructor as yourself so helpful.
Can we download these video's? I own a company called HEMSCO Supply and we are a registered instructor for the state of Indiana. Thank You
thanks a lot and best regards for your valuable worthy comment
it is my pleasure
yes my videos are open source. these can be downloaded, shared in format. i have no objection at all
@@HaseebElectronics on another subject can you help in a component design? What would you charge
@@HaseebElectronics could I email you
@@Jhobbselectric my Gmail id is ashraf4ta4@gmail.com
Whatsapp 00962-79-5324272
Muhammad Ashraf
Lk 168 brother 👏👏👏
Many many thanks dear sister
Hey friend, super video. Massive like from me as usual and keep it going!
Big thanks and best wishes
Hi Sir thank you very much for always sharing electronic repair videos. I learn a lot from your detailed explanation. keep it up. Just a quick question sir, I love your desoldering iron where did you bought it? Thank you.
best regards and special thanks
you can a;so check video number 511 for checking my soldering desoldering tools and i purchased online and some from local suppliers here in Jordan
@@HaseebElectronics please your WhatsApp number
Good video mate even tho I don't understand what you're doing 🙄 quick question if you please inverter Tig welder not switching on fuse ok any suggestions please 🤦
Allah bless you
Nice g
best regards
Hi
I have an igbt welding machine the relay has power the fan is tuning but I have no output at the welding terminals. What should I check?
hello haseeb
i have a welding machine BLUE 315 it has very weak welding and gradually it stops sparking. what cauld be the cause?
i tested the out put voltage and its only 9 volts DC
I did test on IGBT, RECTIFIERS ,CAPACITORS they are all okay and the fan is working.
Please provide PDF
Sir please make a video on op amp.how does it work 🙏
sure i will explain it soon. i noted it
Thank you sir 🙏
I received a single board without igbt. When i install 60t60 it doesn't work at all. When i install 60n60 it works but igbt get hot after 50 seconds even without any load.do you know what can be the reason?
Assalamu alaikum,haseeb, bhai kaise hain,yeh,sab, to, meri,samaj,se,nahar, hai ,fir,bhi, well done keep it up my friend and god bless you best of luck and stay connected 👍♥️
Hi sir 1st thanx for ur videos in english its very good im all the way from south africa watching ur videos and its information i learn alot. But i have a request sir cud u do a video on smps repair practical where voltage measurement frm AC inout to pmw transistor or ic and voltages coming out and where do we get the voltages frm there until we reach secondary side plz
السلام عليكم brother
In inverter welding machine if the PTC drops 15 v and gets hot after 1 minute of working and shut down the machine is the PTC itself the cause of this fault .PTC when cold is 140ohm then decrease its resistance
How frequency & duty cycle?
Walaikum Salam
How turn of main transformer coil primary & secondery?
السلام عليكم ورحمة الله وبركاته جزاك الله خيرا اخي العزيز عندي سؤال
كيف أستطيع تقدير قيمة مقاومة gate وقيمة المقاومة الموجوده بين source و gate اذا كانت محروقه وقيمتها غير معروفه
ولك جزيل الشكر والتقدير
Sir, single board ka igbt bar bar kharab kyon ho jata hai kabhi kabhi welding rod touch karte samay kabhi 1, 2 din ke bad ya fir 1,2 mahine me jabki mai sabhi igbt ke gate aur emitter pr ac pulce cheke karke aur aapke video me dekha hai led se bhi cheke hue is tarah se bhi cheke karke igbt lagata hu. Mujhse kahan mistake ho raha hai pls. Reply
V.good job.plz tell me. Snuber diode is a normal diode or not.
best regards
it is most of time fast rectifier as FR407
Asalam Alicom
VDS ka problem kese solve kare ferrite transformer se please reply
Hello Brother,
First of all thank you very much for you valuable videos. Very informative and useful. As a subscriber of your channel i'd like to ask Very kindly would you please letus know about your desoldering gun. is that a DIY aparat? or a Special things?
Main note explained is not in frame to see it off the sight that is the only mistake in this video I am sorry to write this
best regards and special thanks for indicating
Whre can l get the typ of soldering station and its name bro?
Sir,after replacing new igbt ,machine still shows igbt short,where is the problem ?will u pliz give me some ideas.
Please check the driver stage or igbt's base voltage and frequency
education
dear sir
where i can get the desoldering tool or is it a local
ly made
it is Weller WR3M. it is made in Germany
you can purchase online
but i will suggest HAKKO-701 japan made
@@HaseebElectronics
thanks you sir have a nice day i'am very appreciate your explanation keep it on sir
Walaikumaslam
best regards and special thanks
sir mere pass ek essab ki welding machine he usme problem he aur mujhe thik karvani he
aap apny city mein kisi achhey machenic k passle jaaein to achha rahey ga
@@HaseebElectronics sir yahan pe to mana kar diya hai
assalam o alaikum mashaAllah nice sharing
bhai mera ghar b dek ly pasand aya tu full watch k sath dn zarur zarur karna jazakAllah khair
Ji mer mein to bahut baar aap k ghar aaya lekin aaj aap aaein to dil se shukriya
salaamat rahein
सर मेरी मशीन में से पट पट जैसी आवाज आती है क्या प्रा ब्लाम है इसका उपाय बताइए
Hi sir...thk for your video..sir I got a problem with a welding...its stay on high amp and it burn the metal,I have check the potentiometer it's OK can u advice me pls
special thanks dear
its control card is not controlling the pulse width to compensate the current requirement on the output terminal.
there are some trimpots near control card (feedback level control, which adjusts the output current level measured by the shunt resistance
2, primary current adjustment - to adjust the output of the current transformer CT in series with the IGBTs & power transformer
3. maximum current limit pot on the control card
4. short circuit current level adjustment pot)
all these trimpots need a very careful calibration to adjust the PWM output to provide the required current
@@HaseebElectronics Hi sir..Thks a lots for taking time to answer me...I will keep follow all ur video..Learn a lots about ur video very very good explanation 😀 😊 keep it up thks
Can u pls explain do the calibration and adjust the pwm output sir...thks in advanced
I think that you add is quite a lot of thermal grease,
and if there thermo pad is placed - there is no any reason for using thermo paste.
For example, thermo conductivity of those materials:
air = 0,02 W/(m*K)
thermal grease = 0,7 (regular) - 5 (very good quality) W/(m*K)
thermo pad = 3 - 14 W/(m*K)
thermal paste is attached and insulator is placed in between the IGBT tab and the heat sink,
but for better thermal conductivity the thermal must be used while we tight the heat-sink the thermal paste flows equally,
specially while working on high power dissipating devices, it must be used
Sir yeah vacuum soldering machine kon see hai
ye Weller WR3M rework station he
Sir ye video Urdu me plzzzz...
ruclips.net/channel/UCLRRH_M_0oW1oLTuUOsDXdw
please check my Urdu channel. us channel per
sabhi videos Urdu language mein hein
First comment and view very interested video pin me dear friend
Hindi me sir ji
yes brother bahut jald ye part aaey ga