capacitor is good, no need to change capacitor. the power transistor is short circuit so it is not blocking voltage. in normal condition each capacitor's voltage must available at each transistor's collector to emitter. if any transistor is short circuited, then it will not hold VCEO, in result all voltage will appear at the opposite transistor. so the power supply cannot take startup
@victorrinz6856
Жыл бұрын
@@HaseebElectronics What is the cause of the transistor burning.. Is it an overload or distortion in the pwm signal or the discharge elements and the transformer coil have a faulty diode, capacitor and 47k fast resistor
@miloradgraovac74
Жыл бұрын
Moj BRATE bilo mi je zadovoljstvo slusati igledati Vas rad,puno,puno pozdrava i zravlja od Milorada
@HaseebElectronics
Жыл бұрын
veliki pozdrav i pozdrav. Budi blagoslovljen
@rmjnm
Жыл бұрын
Nice repair! Loved it.
@Solder_it
Жыл бұрын
Thank you
@YoutubeBaruHamid
Жыл бұрын
Makasih ya sdrku sudah berbagi informasi nya 👍❤️
@pu8reLib
Жыл бұрын
excellent.., brother
@HaseebElectronics
Жыл бұрын
best regards
@kaizen1071
Жыл бұрын
Güzel iş güzel video. Yaşasın haseeb elektronik.İyiki varsınız. Saygı ve selamlar.
@HaseebElectronics
Жыл бұрын
saygılar ve özel teşekkürler
@vijayakumarkumar9190
Жыл бұрын
Very good and useful information sir thanks for sharing this knowledge to us
@HaseebElectronics
Жыл бұрын
it is my pleasure
@TABE-O
Жыл бұрын
Yet another good educational repair. Thanks Haseebibi!!
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@rashminaik6039
Жыл бұрын
Thanks...sir ji...
@HaseebElectronics
Жыл бұрын
it is my pleasure
@ramakrishnaraogs4427
Жыл бұрын
Thank you very much sir for the useful video.
@HaseebElectronics
Жыл бұрын
best regards
@tekno-tekin
Жыл бұрын
Teşekkürler.
@HaseebElectronics
Жыл бұрын
çok teşekkürler
@khanlalavlogs
Жыл бұрын
Excellent sharing brother.
@HaseebElectronics
Жыл бұрын
best regards
@mimisabu2121
Жыл бұрын
Emeğinize sağlık...
@aldrienganaut5057
Жыл бұрын
Like topic Power supply
@jitmehra952
Жыл бұрын
Nice very nice
@HaseebElectronics
Жыл бұрын
it is my pleasure
@shefqetkaralliu6816
Жыл бұрын
Grazie ❤️👍
@HaseebElectronics
Жыл бұрын
most welcome
@muhammadishtiaq24
Жыл бұрын
Excellent thanks for sharing
@HaseebElectronics
Жыл бұрын
thanks a lot
@Edmorbus
Жыл бұрын
Thanks for sharing
@HaseebElectronics
Жыл бұрын
it is my pleasure
@Versatiledani
Жыл бұрын
Good work brother 👍
@HaseebElectronics
Жыл бұрын
thanks a lot
@electroniquepassion
Жыл бұрын
Good work 👍👋
@HaseebElectronics
Жыл бұрын
thanks a lot dear friend
@jcsudeshchannel8224
Жыл бұрын
EEE (excellent engineering enhanced)
@HaseebElectronics
Жыл бұрын
best regards
@mujtabanaqvitv7619
Жыл бұрын
Good work👍👍
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@TABE-O
Жыл бұрын
Keep them coming man!!
@HaseebElectronics
Жыл бұрын
it is my pleasure
@susantaatha6468
Жыл бұрын
Excellent
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@electronix.1
Жыл бұрын
Minute 6:25 Yes🤏👌💫💯
@HaseebElectronics
Жыл бұрын
best regards
@AbdulMomenZargar60
Жыл бұрын
Hello Janab Bhai Sahib
@HaseebElectronics
Жыл бұрын
bhai ji kesy hein aap
@nayanjagirdar8408
Жыл бұрын
👌👌👌👍
@HaseebElectronics
Жыл бұрын
most welcome
@aritrasinghachowdhury3227
Жыл бұрын
SIr, Sincerely request you to show how to troubleshoot automotive ecm/ecu .
@dhanuskalankathilaka
Жыл бұрын
,🙏💯
@jitmehra952
Жыл бұрын
You have sort circuit protection and overload protection circuit
@mahendransshowtime3534
Жыл бұрын
Sir please make video on voltage controlled oscillator
@gamiwv
Жыл бұрын
hwy not both power transistors change (due to long term reliability) ?
@HaseebElectronics
Жыл бұрын
if one is working good, then i think no need to replace. as it is in bipolar drive, so it will work normally
@RatonEEE-bp2my
Жыл бұрын
Sir why use dpdt switch and how work this dpdt switch when we turn it 120 volt or 220 vac.
@ltlt6117
Жыл бұрын
Hi Have you schematic of this type of power supply how can I find it ???
@tomspeed2000
Жыл бұрын
I have 6v 30 amps with exact problem but when I opened the box i saw they totally removed the transistor serial numbers by polishing the plastic surfaces.. do you have any suggestions about which kind of transistor models are compatible for this power supply please? Is this model what you showing is compatible? Thanks
@mdpal7166
Жыл бұрын
Trace the circuit with what ever other components are still unremoved including switching ic. Match for ckts. You can find it out.
@dahrafs9798
Жыл бұрын
I have same SMPS 12v 30A. The output negative positive is shorted. What should i check?
@minyahilsolomon6813
6 ай бұрын
I have one smps power supply it has some problems it has an output and also it works for long time but suddenly it stops working an output off why this huppned ?
@martinkuliza
Жыл бұрын
1:57 Who do you ignore the black marks under the caps ?
@HaseebElectronics
Жыл бұрын
i was checking that, is there some burning sign or smoke sign
@martinkuliza
Жыл бұрын
@@HaseebElectronics it didn't appear that you made any mention of the caps possibly being shot, You didn't check the E.S.R Burning smells are fine, if it just blew up now, but if it's been a week or 2 the smell wouldn't be there You touched it with your fingers then.. thought nothing of it Great you swapped the Transistor, You didn't check other possible faulty components as a result of the short
@HaseebElectronics
Жыл бұрын
the capacitor ESR test is needed when the supply don't drive the load or it fluctuates or the power MOSFET or fuse burns out if the circuit works fine, then mostly I skip the ESR test
@martinkuliza
Жыл бұрын
@@HaseebElectronics Sure... Respectfully mate (My Fellow Electronics brother) I've been doing this since i was 6, I'm 49 we all have our things, don't we. there are foundational rules such as (always test voltages first) but then we all put our own stamp ME... I have seen too many situations where i should have tested E.S.R. on Caps and... time and experience has taught me that i should Besides it only takes you say a few seconds more to test 2 or 3 caps or maybe 1min to test them all when i repair, i basically do what you did, i follow the voltage i find the fault , i replace one thing at a time BUT I ALWAYS DO HOUSEKEEPING AFTERWARDS if all seems ok, i'll check basics like ESR on caps Resistance on Fuses Just in case and i have had scenarios where i have seen High resistance on fuses even though the circuit works and high ESR on caps when it was all working and changing them out as well since it's open saves time fucking around later on but hey, again, we all have our own way we do things that's how i would have done it but yeah, mainly because you had all that blackened stuff, I NEVER LOOK PAST THAT
@HaseebElectronics
Жыл бұрын
salutes and special thanks for your valuable comment you are exactly perfect
@sunny-yj5tb
Жыл бұрын
How to know which substitute transistor can be used instead of original one , please guide us...
@mdpal7166
Жыл бұрын
Look for data sheets or replacement tables..
@suatkaleli5075
Жыл бұрын
@kasunabethunaga7676
11 ай бұрын
How to is verible vc cc
@MarkPrince1317
Жыл бұрын
Very fast repair brother but some information need you replace defrent transistor i see and last question SMPS can use as lithium battery charger ? Thank you and best regards from Philippines 🇵🇭☕☕☕
@mdpal7166
Жыл бұрын
Look for data sheets or replacement tables..
@MichaelKingsfordGray
Жыл бұрын
NO! Used to charge lithium cells will result in uncontrollable fire!
@anwarjamal8908
Жыл бұрын
Sir why inductor used in output side
@MichaelKingsfordGray
Жыл бұрын
As an energy "tank" or receptacle during the AC zero-crossings.
Пікірлер: 84