{1011} EMERSON R481800A Power Supply, No output voltage
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- čas přidán 21. 08. 2024
- in this video number {1011} EMERSON R48-1800A R481800 Power Supply No output voltage, i repaired Emerson R481800A 48V 1740 watt power supply, it was not providing output voltage. smps controller ic 28C43 found burnt-out. i replaced with 3843 SMD ic. it is part of Netsure 211 C46 48V 1kw-4kw Power Supply System Emerson Vertiv
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Wow! Excellent workmanship. I learn a lot from you.
best regards
it is my pleasure
We use an Eltek version of this rectifier unit on the UK railway to power our Austrian Frauscher digital axle counters. The fans often fail as they are running 24hrs a day and due to their environment, they suck lots of dirt onto the circuit boards, which tracks to the metal casing. This results in high DC to earth readings, which is forbidden on railway signalling circuits. I’ve brought lots of them back in spec by washing the PCBs in isopropyl alcohol and repairing any corrosion with UV activated conformal coating. Thanks for your excellent content.
नमस्कार जी
मै आपका बहुत बड़ा फैन हुं और भारत से हूं मै आपकी लगभग सभी विडिओ देखता हूं कृप्या सोनी एल इ डी टीवी के एडपटर का विडियो डाले जिसमे दो ट्रांसफार्मर लगे है और उसमे आॅपटोकपलर का उपयोग नही कीया गया है शायद
What a Power Supply, 😊👌
Best repairing tricks 👍
this power supply is part of Netsure 211 Power Supply System Emerson used in communication system cabinet
This rectifier unit is installed in Emerson power cabinet in mobile communication stations to supply -48V DC power to telecom equipment in the station.. I have installed and maintained these cabinets but I only replaced faulty rectifiers with working ones .. excellent job sir.
wow that is great
yes is is a part of Netsure 211 48V Power Supply System Emerson cabinet
Thanks for using the microscope. It makes the repair better.
it is my pleasure
adevarat profesor, explicat foarte frumos si clar,felicitari !
cele mai bune salutări și mulțumiri speciale. e plăcerea mea
We watch your Vdos avidly in Class , only I have to tell my students , that's not the optimal way to desolder Smd components with soldering iron, you and I can do it due to experience, but they will try and possibly damage components .... I've told.them to please use desoldering hot air gun ..... Pls don't take it negatively, and keep the vdos coming ..... Thank you
Good solder work.
best regards
Aap ka videos dekh kar 80% power supply repairing seekh liya hu
Finally a video on server power supply. I love you so much. Kindly try to make more videos on server supplies like HP 12V 62amp or 100amp
Thanks for another great video. Please consider using a fume extractor to avoid inhaling toxic fumes so that we can enjoy many more video's from you in the years that come. Stay healthy, happy holidays!🙏🏼
thanks you very sir for sharing...god bless.
It is my pleasure 💕
Beautiful explain. Thank you sir.
You are most welcome
Hello, my name is Cengiz. I am writing from Turkey. I like and enjoy watching your videos. I congratulate you for explaining SMS circuits in a magnificent way. For example, I have a request from you. Television main cards have a standby transformer on them. Can you post a video on how to activate this transformer? Thanks in advance 🤲
🇹🇷🇹🇷
Excellent 👌👌👍👍🌹🌹
I watch your videos because I get to learn something from it, replacing a component can be done by anyone who's into repairing but how do we get to know what to replace or which section is where like you told this is stand-by section but I don't know & most of the viewers watching this video also don't know (maybe I'm wrong)
My main concern is please explain how to find on which section fault is & how to find the schematic of any circuit.
In previous videos you explain the circuit very well please continue the same explanation pattern it helps a lot in practical
I'm a big fan of Haseeb Electronics,
Sorry if my words hurt you
Excellent thanks for sharing this informative video keep sharing
Good diagnostic skills, but the soldering/desoldering was a mess.
Nice teach sirji
Best regards 💕
جزاك الله خير
See you in your live video thanks
most welcome dear
Valuable vedio ❤ sir thanks for share
Wow that was a very complicated power supply. I have repaired a few things with conformal coating it can be removed with acetone to avoid scratching the chip markings. Glued chips can be removed with hot air then when solder melted remove chip by levering from under the chip using pointed tweezers. Surprised to see only control chip bad, expected other parts to be bad also like shorted mosfets or open resistors. Very strange why only control chip was bad and nothing else. Maybe something still bad and under full load it won't work correctly so it should be checked with load.
Thanks for sharing
Hi Haseeb you can use super paint stripper to get rid of the coating
I have tried it works great
It is easier, safer and cleaner with acetone. This is commonly found cheaply with nail polish remover.
Thanks sir❤❤❤
Good job as always teacher.A question please,why the series lamp fully glow when the board is powered on with the bad iC,and still glow with the good IC?
Thanks sir 🙏
Hi please make a video with electronic components that looks like resistors and how to recognise them!
great 👍❤
mr haseeb use paint remover product to remove varnish from pcb
Sure
I will apply paint striper
Thanks a lot for your valuable comment 💕
@@HaseebElectronics All respect to you and the valuable content you publish ❤️
Thanks for the video and the knowledge. Please what wattage of filament dim bulb will be used as a current limiter for this power supply wattage.
Nice sir 👍👌
thanks a lot dear
👍👍👌👌
Sorry, I’m a big fan of your channel, but your latest videos are not informative at all, unlike your previous videos. In the past you provided very detailed and professional explanation on the circuit topology and repair technics, and now we only see replacement of the parts.
Thank for sharing this video, I wonder if you have the Schematic diagram for this power supply ?
Sir really this smps is a monster. Where its using?
it is part of Netsure 211 C46 48V Power Supply System Emerson. it is used in communication sector
@@HaseebElectronics thank you sir
It looks like a forward converter. I most ask a question the tlp250 optocoupler what the maximum igbt can control at 50hz
Assalaamu Alaikum Ashraf bhai,
Am jabir,i mailed you the Western Instruments Coil schema
Hello Mr Haseeb. Can you tell me which microscope you are using?
Sir please start a video for beginners
Emeğinize sağlık efendim. Bu devredeki işlemcinin işlevi nedir. Teşekkürler. Allah emanet olun.
Hi
I have fluke 179, but I don’t know how to check dc frequenc with that
Hi and thank you very much
How I can find diagram of samaung smps boar no.htz220/320/420
I need just amount of 3 resistor R7 & R8 & R9 they are near ice2q01
They are damaged and I couldn't find any reference
Resistors are smd
Sir i have one doubt, Can convert the LED driver to smps?
how can we modify a server source so as to obtain a variable voltage at the output. Can you make video with that? Thanks
Great tutorial, already like comment subscribe.
I'm from Indonesia, I have a problem with the SMPS on the "ANJING" brand battery charger made in China using IC UC3842B on leg 7 (imput) with a voltage of 12 - 14 VDC, on leg 6 (output) there is a pulsating voltage of 0,5 - 1.5 VDC which goes to the MOSFET gate 7N65, on the drain leg the voltage is 210 vdc connected to the transformer leg, primary Elko voltage 320vdc, output 0 vdc, where do you think the problem is sir? I removed and checked several important components in the primary and secondary which had normal values...
In this conditions, is the UC3842B still normal or is there a problem? Thank You
Assalamoalaykum bhai saheb emerson 7001445-jooo rev ab ko kaise on karen iss ki vedio bana den thanks
Why changed ic area diode is N and P connected but another diode N and P connection is diode function?
Assalamu alaikum, When i tried to measure voltage at output of pulse transformer for ac volt my digital multi meter burnt even the range was ok. I measured the voltage without installing diodes and filter capcitor for pulsed alternative volt but meter burnt. When anlog meter used it shows pulsating volt with no damage to meter. What happened?
Hi, check for "snubber circuit" explanation
Hello wat data shet smd plz
Bhaijan mujhe ye Power supply chahiye ,if you can give me?
👍
Sir , your videos r so informative, can U kindly share ur number.
sir do u have a number or any way i can talk to u ?
my whatsapp number is 00962795608616
gmail id ashraf4ta4
Good job as always teacher.A question please,why the series lamp fully glow when the board is powered on with the bad iC,and still glow with the good IC?