Check Previous Power Supply Repair Video: kzbin.info/www/bejne/kKO3qn93fJpng7s
@THOMMGB5 ай бұрын
Thank you for doing this video. I like that you went slow and explained everything as you went along.
@biomedicalelectronicsengin71925 ай бұрын
Glad it was helpful!
@Acekicker2772 ай бұрын
Interesting video. Need your help. My drilling machine charger became faulty, and when I opened it, I discovered the NTC was weak and broken. I got a new one and replaced it, and the charger turned on when I tested it before screwing it. After screwing it turned off.. Don't understand what happened
@ksafan8382 жыл бұрын
You should be systematic in your troubleshooting. Follow the circuit: input then output, not haphazard. Component checking is like hit and miss unless you follow where the signal is getting lost.
@timmooney75282 жыл бұрын
It is a relatively simple circuit having very few components when compared to some power supplies. I too look for obvious failures beginning with visual inspection, then move to passive components considering there's not many to test.
@mdssolder24 күн бұрын
Thanks for tutorial 😊 3:51
@biomedicalelectronicsengin719224 күн бұрын
You're welcome 😊
@JeffreyMendoza-xt5mv Жыл бұрын
Wow ang galing Naman ninyo idol Ngayon may konting kaalaman na ako Kung paano mag diagnose Ng power supply. Salamat 😊
@biomedicalelectronicsengin7192 Жыл бұрын
Salamat
@sirjothtv4768 Жыл бұрын
Salamat sir, basic explanation and tutorial
@OnlyOne1Dee2 жыл бұрын
Finally we have a biomedical Engineering tutor practically tutoring
@prkacro2 жыл бұрын
thanks for the video.. greetings from Croatia !!
@penministries4322 жыл бұрын
Nice vedio.we want more like these ones.God bless you sir.watching from South Africa.
@biomedicalelectronicsengin71922 жыл бұрын
Thanks
@peruibeawonderfulatlanticc3260Ай бұрын
you don very good work i had this problem in my power supply i will try as you done >>>>thanks agean hope you have more in futur
@biomedicalelectronicsengin7192Ай бұрын
You are welcome
@themad_engineer2 жыл бұрын
Just a question why don't you use the half approach, in the sense that you divide the circuit into two halved then test the halves individually and the half that isn't okay you divide it into half and test it again till you go down to a specific component
@rku840 Жыл бұрын
Theoretically it is good to use the half approach but you need to switch on the circuit to test the in and out voltage and the risk of touching live wires is high. Going through component by component should not be a problem as you can see very few components are there in the whole circuit
@tatabic1491 Жыл бұрын
Idol thank for sharing about open resistor .
@biomedicalelectronicsengin7192 Жыл бұрын
Thank you too
@englishrupe012 жыл бұрын
Good job!
@mohammedshakir75402 жыл бұрын
Thank you God bless you
@biomedicalelectronicsengin7192 Жыл бұрын
Thanks
@eddielabiste89222 жыл бұрын
EXCELLENT TUTORIAL IDOL, NAG SUBSCRIBED NAKO NIMO. THANKS
@biomedicalelectronicsengin71922 жыл бұрын
Thanks
@FlorentinoJrEstil3 жыл бұрын
You've replaced resistor in very low power rating, soon that resistor will got hot and it will cause burn.
@biomedicalelectronicsengin71923 жыл бұрын
They are the same power rating 3W
@FlorentinoJrEstil3 жыл бұрын
Pa shout out naman dyan Biomed from UAE Dubai.
@biomedicalelectronicsengin71923 жыл бұрын
On next video. Noted
@FlorentinoJrEstil3 жыл бұрын
@@biomedicalelectronicsengin7192 Ilang taon kana dyan nag work Saudi?
@biomedicalelectronicsengin71923 жыл бұрын
@@FlorentinoJrEstil mga 9 pa lng.
@conradztech3 жыл бұрын
Sir shoutout diyan sayo Godbless always..suporta mula sa aking mumunting channel..
@biomedicalelectronicsengin71923 жыл бұрын
Maraming salamat sir. More power
@billypastor6667 Жыл бұрын
Very nice tutorial thanks for sharing ur video sir.
@biomedicalelectronicsengin7192 Жыл бұрын
Most welcome
@alexandres8846 Жыл бұрын
diy load current tester is better for location burned o damaged components. 1 to 10 mah testing.
@biomedicalelectronicsengin7192 Жыл бұрын
Yup
@محمدنعمان-ر6م Жыл бұрын
Please determine in wich voltmeter u set fir begginer
@surgingcircuits69552 жыл бұрын
What was the watt capacity of the original vs replacement(s)?
@biomedicalelectronicsengin71922 жыл бұрын
Same wattage. 1 watt
@williamwoo1437 Жыл бұрын
You said 3 W in another reply
@fixnreview3 жыл бұрын
Watching from Ormoc City
@biomedicalelectronicsengin71923 жыл бұрын
Thanks
@chriswebb4162 Жыл бұрын
Got there in the end.
@biomedicalelectronicsengin7192 Жыл бұрын
Thanks
@gregjones3660 Жыл бұрын
Genius
@dexter71392 жыл бұрын
Sir good evening pwede po ba ipagawa sayo yong baseus car starter jumper ayaw siya magcharge?
@biomedicalelectronicsengin7192 Жыл бұрын
Sa Saudi po ako naka based. Marami po dyan sa pinas gumagawa nyan.🙂
@dexter7139 Жыл бұрын
@@biomedicalelectronicsengin7192 ok po sir salamat, pwede ask kung may e recomend ka na andito sa pinas at salamat sir
@sanushkumar-v8c Жыл бұрын
Power supply all have voltage but when footswitch is plugged the machine is not working. Voltage not coming why? Plz reply
@eidodoos Жыл бұрын
pls mske more video like this
@biomedicalelectronicsengin7192 Жыл бұрын
Thanks
@ubertcoolie8694 Жыл бұрын
cool video
@juanpatino74723 жыл бұрын
Hello friend. I have one power supply of light source storz but It is short already discard the rectifier bridge , switch transforme and IC. I test it with protection and it has intermittence without protection a mosfet burn me. What can you recommed me? Thanks.
@biomedicalelectronicsengin71923 жыл бұрын
Most of my experience from karl storz light source are transformer problem.
@rodym16813 жыл бұрын
3:02 what is this component?
@biomedicalelectronicsengin71923 жыл бұрын
Optocoupler
@rodym16813 жыл бұрын
@@biomedicalelectronicsengin7192 what is the use of the optocoupler?
@eustacehendrix96592 жыл бұрын
@@rodym1681 It's a switch. 2 legs are connected to an IR LED and other 2 legs to a photo transistor that catches the light from the LED. This allows one circuit to turn on the other circuit while keeping isolated from each other. It's common in circuits where interference from the High Voltage circuit must not go to the Low Voltage circuit like audio, video and medical equipments.
@ΠάριςΑζής2 жыл бұрын
@@eustacehendrix9659 An optocoupler, as it's name implies, is NOT a switch (although it can perform like that) but it is a device that couples optically (i.e. not electrically) two different circuits. Its purpose is a) to keep these two circuits electrically isolated, but also b) to allow the control of the circuit using its internal opto-transistor (controlled device) by the circuit using its internal photo-diode (controlling device). The type of control now, can be either digital (ON-OFF of a power device like a transistor), or analog, which is the case in this application. In other words, the light intensity of its internal photodiode represents the desired output voltage of the power supply, as its opto-transistor conducts in a linearly increasing (or decreasing) manner according to the infrared light density emitted by the photo-diode. Therefore, if the power supply output voltage tends to increase, then the photodiode emits more light, as the current within it will increase, forcing the opto-transistor to conduct more than before, informing the P.W.M controller that it needs in turn to reduce the width of its output pulses in order to have the output voltage reduced accordingly. Inversely, the procedure will increase the output voltage (in case the load demands more current) keeping the output voltage constant. So the optocoupler seems to be rather an optical controller, not a switch whatsoever.
@AliRezaJoodi Жыл бұрын
Thanks
@biomedicalelectronicsengin7192 Жыл бұрын
Welcome
@Schjoenz2 жыл бұрын
Anlakas ng music pero mahina boses boss. Pwede mo sya masama sa editing.. 😁 Salamat nga pala sa tutorial..
@JMTUTORIAL3 жыл бұрын
Ayus bro watching bossing.
@biomedicalelectronicsengin71923 жыл бұрын
Salamat
@bulla863111 ай бұрын
measure while the power is off it hart to tells the parts they tied it together it make you go nuts if you thing that’s parts is the problem you pulled it out checked ok
@biomedicalelectronicsengin719211 ай бұрын
Thanks
@RicardoGarcia-oi8hz3 жыл бұрын
Some guys say that is not okay to test the components within the circuits, some say it is not a problem..... I am really confused
@biomedicalelectronicsengin71923 жыл бұрын
It is more accurate to test the components off the board.
@eustacehendrix96592 жыл бұрын
Electrons will travel through the path of least resistance which is usually the component that you're testing as opposed to going the other way where the resistance of all other components will be added, not to mention there's almost always a diode that will make sure the other way is not a short circuit. Testing on board helps you localize the problem then you take the components out one by one and test off board to double check.
@RicardoGarcia-oi8hz2 жыл бұрын
@@eustacehendrix9659 Nice explanation , thanks!
@sirjothtv4768 Жыл бұрын
@@eustacehendrix9659the diode then makes the fluctuation of the 120k resistor which is busted
@jimle22 Жыл бұрын
I checked and tested rectifier bridge in circuit and got bad reading. No double voltage from neg to pos. Took it out and it tested good.
@arulsubramaniam76487 ай бұрын
10q for tutorial
@biomedicalelectronicsengin71927 ай бұрын
Thanks
@tanfor5102 жыл бұрын
Galing mo brod
@jovietapia1202 жыл бұрын
How match transformer
@GrahamLeach9 ай бұрын
fix your sound levels
@mikeatlanta93063 жыл бұрын
🔥🔥🔥🔥
@NelsonTumamak9 ай бұрын
Bkt nakareverse pa sa pagtest ng resistor...ayusin mo birada...
@bennavarro30762 жыл бұрын
Hello! Bro saan ka sa Saudi nagtrabaho? Hanggang ngayon ba?