Just sharing, here... In the USA, we have "Painter's Tape." It is similar to brown masking tape, but the adhesive leaves no residue, when the tape is removed. It is usually blue, in color. When I clean my bench top, I use this type of tape to pick up the tiniest bits of metal, that the brush misses. It is also useful for securing a PCB to the bench, when soldering. It has a thousand uses, on my bench, and I always keep it at hand. Again, in the USA, using a light bulb in series as a current limiter is called a "Dim Bulb Current Limiter." It is also (incorrectly) called a "Dim Bulb Tester." It requires a common incandescent, or halogen, bulb(s). LED bulbs will not work and will not protect you. You can mix and match different wattage bulbs, in parallel and series, to obtain the specific current that you desire to use. You mentioned that a resistor may be used to discharge a capacitor, but then you used your screwdriver to short the cap pins. With all due respect, this is a poor and dangerous method that can damage the cap. A "Capacitor Stinger" probe can be made from a high value resistor, having a sufficient wattage rating, a few bits of wire, heat shrink and chop sticks. Many DIY solutions may be found on Google. Constructing one might make a good, short, instructional video, for you. I hope these things help. I take no responsibility for what any individual makes from my suggestions. Each person is responsible for their own research, knowledge and safety.
first of all i am thankful for your comment it is really a valuable safety point. i will share it among all my viewers as well please accept my best regards and special thanks
@@HaseebElectronics In the light of all said above, a 100W incandescent lamp does not always offer the needed protection, simply because it needs relatively too much initial current in order to glow permanently (if something is still wrong after a repair, or even if it is used for a simple verification test that everything is O.K with the power supply under test). The best method is to use each time a bulb that has a power less than or equal to the power of the power supply under repair/test. As a practical example, using a 100W lamp in series to the input of a defective USB telephone charger under repair does not really make sense. In such cases I use a 3W night lamp, while in general repairs I prefer a 40W lamp. On the other hand, an inverter welding machine may need a 350 to 500w lamp for the same test...
Ho scoperto il tuo canale per sbaglio, devo dire che ,oltre a saper riparare le schede, sai perfettamente passo dopo passo a spiegare ogni singolo componente con le sue relative funzionalità, cosa che nessuno lo evidenzia, con il tuo canale sto imparando ogni singola riparazione con pazienza e tanta buona volontà. Un likes e iscrizione assicurato. Bravo e complimenti 👍👏👍
Mr. Haseeb, Thanks again for another wonderful video. I really appreciate in your videos; how you always make safety first and tell us how to be safe! I always learn important concepts from your teaching.
Great video on troubleshooting steps and the safety aspect of working with power supplies. I have watch some of your videos and they have helped me repair items around the house.
Dear Mr:Haseeb I am Jamal from Sri Lanka and I always watch your videos and gained more knowledge out of it. Much appreciated if you could upload a tutorial about Power Bank circuit principles and Power Bank jump starters. Thanks in advance.
Why we use series lamp no one explained this way so far,thanks. The Soldering iron with your good self ,may be with auto desoldaring pump,seeing for the first time,thus satisfied with quality teaching.Thanks.
I really like your videos. I downloaded as many as possible. Please what advice can you give me on how to be very familiar with circuits. I'm Biomedical and Mechanical Engr. I want to upgrade my electronics knowledge to handle medical equipment, most especially the electronic aspects. Thanks
assalamualaikum..tq sir..learning something today..all about safety lamp..i aver try diy my power suply ..couse by lightning..but i dont anderstand ..step of safety repering power sulpy..n got bomm...diod..hhhaha..another part have short circuit..
Salmon alikom Bro God bless u .4 your work. And spreading the knowledge. . But.1st.you say inputohms was ok... After test with lamb ...not ok .... Can explanation ..what can be OK ..from input resistance
Oh, Very great and deep observation thanks a lot for your comment kindly check video number 684 for your detailed answer. ruclips.net/video/2vcqR1TUU-k/видео.html
Hi, some of the electricians use"KLY POWER CIRCUIT" for repairing smps power supply.We want to know about this this circuit diagram and about its benifits or disadvantages. Does it safe to use it?. Please make a video about this kly circuit
Mr. Hasseb, why need to remove the ground cable?. I used series lamp for ups repair, lamp light up and ups not turning on. After remove the lamp and power up ups, then it is able to power up. Kindly advise. Tq
thanks a lot it is WELLER WR3M made in germany you can find it online. it is abouve 3000 USD. its routine maintenance is also expensive i suggest to get HAKKO 701-15 that is cheaper than this and its maintanance is very low
@@HaseebElectronics sir I checked on ATX power supply smps of PC the voltage at the DC rail capacitor is 315vdc and it is maintaining.when I checked the circuit I found that the pwm ic tny2768pg source and drain was shorted,it has internal MOSFET.i checked in the circuit and it was shorted and I taken out from the circuit the ic still shorted.There is no output at the output side of smps and the fan is not working.but the fuse is not blown even the source and drain of ic was shorted.why
exactly it is series load connected in series with input line of UUT / DUT. during normal operation the lamp will not effect too much but in case of hogh current consumption by UUT/DUT (during any failure / error / abnormality) the series lamp will protect the circuit from any further damage for example, if there is anything short circuited in UUT/DUT, the lamp will glow full instead of any possible damage in the UUT due to any unexpected short cirfcuit
I think what you are saying about the lamp is that it causes a large voltage drop across its filament if a short occurs in the circuit. A shorted current will flow, but it will be greatly reduced due to the voltage drop in the lamp. The short could occur after a number of otherwise good components. Is that correct?
great it's fuse was burnt out and I already bypassed fuse with 1 ampere buss fuse wire to demonstrate the problem instead of proceeding to input short circuit diagnostics
most welcome during repairing, in my experience that it is safe to use 2 wires (line & neutral) without earthing just connect earthing wire for final testing
Great videos Haseeb. One question. Does the lamp must be 100w? Should a 60W or else work as well? I imagine it's all about not to burn the lamp because if the lamp burns out then the lod will fall onto the power supply fuse
HOW ARE YOU BROTHER THANKS FOR EVERYTHING WHAT YOU LEARN US YOU ARE MY HERO KEEP IT UP PLEASE,ANYWAY BROTHER I CANT GO WITHOUT ASKING A QUESTION I AM STRUGLLING WITH A 33 GIGA OHM RESISTOR THE COLOURS ARE ORANGE,ORANGE,WHITE AND GOLD SO MY QUASTION IS,IS THERE ANY CHANCE THIS RESISTOR CAN GIVE A CONTINUITY RESULT IF IT IS GOOD?
I try this safety bulb but with 160watt bulb instead Connect it to my atx power supply And the bulb is kinda half glowing Its measured 100ish volt on ac side And the dc side is 200ish Whats my problem sir? Is it short somewhere?
Can you make a episode. For that lamp..we need deep explanation how a single incandescent lamp can protect a electronic circuit.. how he behave in a circuit yet he was just a lamp
How to choose the right wattage of the light bulb? And how to understand the light result? (no light, low light, full light, quick flashing, slow flashing...?). Thank you, sir
if the circuit is good, and lamp is higher wattage for example 100 watt. that time the lamp will not glow. just in startup, it will glow for a moment, that time the empty capacitor tends to draw surge current for initial charging, if circuit have some short circuit, that time the lamp drops all the voltage across itself, and protects the circuit from more damages
Just sharing, here... In the USA, we have "Painter's Tape." It is similar to brown masking tape, but the adhesive leaves no residue, when the tape is removed. It is usually blue, in color. When I clean my bench top, I use this type of tape to pick up the tiniest bits of metal, that the brush misses. It is also useful for securing a PCB to the bench, when soldering. It has a thousand uses, on my bench, and I always keep it at hand. Again, in the USA, using a light bulb in series as a current limiter is called a "Dim Bulb Current Limiter." It is also (incorrectly) called a "Dim Bulb Tester." It requires a common incandescent, or halogen, bulb(s). LED bulbs will not work and will not protect you. You can mix and match different wattage bulbs, in parallel and series, to obtain the specific current that you desire to use. You mentioned that a resistor may be used to discharge a capacitor, but then you used your screwdriver to short the cap pins. With all due respect, this is a poor and dangerous method that can damage the cap. A "Capacitor Stinger" probe can be made from a high value resistor, having a sufficient wattage rating, a few bits of wire, heat shrink and chop sticks. Many DIY solutions may be found on Google. Constructing one might make a good, short, instructional video, for you. I hope these things help. I take no responsibility for what any individual makes from my suggestions. Each person is responsible for their own research, knowledge and safety.
first of all i am thankful for your comment
it is really a valuable safety point. i will share it among all my viewers as well
please accept my best regards and special thanks
@@HaseebElectronics In the light of all said above, a 100W incandescent lamp does not always offer the needed protection, simply because it needs relatively too much initial current in order to glow permanently (if something is still wrong after a repair, or even if it is used for a simple verification test that everything is O.K with the power supply under test).
The best method is to use each time a bulb that has a power less than or equal to the power of the power supply under repair/test.
As a practical example, using a 100W lamp in series to the input of a defective USB telephone charger under repair does not really make sense. In such cases I use a 3W night lamp, while in general repairs I prefer a 40W lamp.
On the other hand, an inverter welding machine may need a 350 to 500w lamp for the same test...
perfect
I normally use 60 watt
100 watt
200 watt
300 watt
500 watt halogen rod
depending on the load size
@@user-pz6cx8zf2y well explained
Ho scoperto il tuo canale per sbaglio, devo dire che ,oltre a saper riparare le schede, sai perfettamente passo dopo passo a spiegare ogni singolo componente con le sue relative funzionalità, cosa che nessuno lo evidenzia, con il tuo canale sto imparando ogni singola riparazione con pazienza e tanta buona volontà. Un likes e iscrizione assicurato. Bravo e complimenti 👍👏👍
Continue with similar testing practices, enjoying it very much
Mr. Haseeb, Thanks again for another wonderful video. I really appreciate in your videos; how you always make safety first and tell us how to be safe! I always learn important concepts from your teaching.
best regards
i am thankful for your valuable encouraging comment
stay blessed
Wish I knew that before I blew off the last power supply I tried to repair 🤣 great video. Thanks
Great video on troubleshooting steps and the safety aspect of working with power supplies. I have watch some of your videos and they have helped me repair items around the house.
best regards and special thanks for your valuable words to appreciate my efforts
stay blessed
This time with language subtitles, we really appreciate it..👍👍
it is my pleasure
Dear Mr:Haseeb I am Jamal from Sri Lanka and I always watch your videos and gained more knowledge out of it. Much appreciated if you could upload a tutorial about Power Bank circuit principles and Power Bank jump starters. Thanks in advance.
great video. Thanks
You are welcome!
Helpful tips for ones who spent time repairing these power supplies. Thanks a lot.
You are most welcome
Blessed be our Father in heaven for your wonderful work.
GOD's willing and GOD's blessings
This is great technique sir! Wondering who came up with it.
Nice video sir
thanks a lot bhai
Why we use series lamp no one explained this way so far,thanks.
The Soldering iron with your good self ,may be with auto desoldaring pump,seeing for the first time,thus satisfied with quality teaching.Thanks.
Thank Haseeb for teaching us.
Bro, you’re the best man. Thanks for sharing your knowledge.
Very good and useful information sir thanks for sharing the knowledge to us
Thanks and welcome
This was the simpliest you have taught me..asalam aleikh..teacher of greater nations
best regards and special thanks
Great video
best regards
thanks so so Mr. i finally got it. god bless U in whatever u do...............................👌👌👌👌👌
I really like your videos. I downloaded as many as possible. Please what advice can you give me on how to be very familiar with circuits. I'm Biomedical and Mechanical Engr. I want to upgrade my electronics knowledge to handle medical equipment, most especially the electronic aspects. Thanks
Watching this channel (and others) is a great place to start...
Thank you sir
Good one sir nicely explained
Thank you
It’s very important to know befor any repair
You are welcome
Trés belle vidéo, j'apprend beaucoup avec vous. Merci!
le plus bienvenu. reste béni
Nice.
it is my pleasure
Thank You I enjoy your videos. God Bless.
best regards 💗
assalamualaikum..tq sir..learning something today..all about safety lamp..i aver try diy my power suply ..couse by lightning..but i dont anderstand ..step of safety repering power sulpy..n got bomm...diod..hhhaha..another part have short circuit..
Thank you for your videos , i learn a lot from you.
it is my pleasure
A great safety tutorial, thank you.
You're welcome!
Salmon alikom Bro
God bless u .4 your work. And spreading the knowledge. .
But.1st.you say inputohms was ok...
After test with lamb ...not ok ....
Can explanation ..what can be OK ..from input resistance
Oh, Very great and deep observation
thanks a lot for your comment
kindly check video number 684 for your detailed answer. ruclips.net/video/2vcqR1TUU-k/видео.html
Thanks indeed for your great information .
it is my pleasure
salaam bro, best video for beginners like me. very good explaination. good work.
it is my pleasure
Thanks...sir ji..,
So nice of you
Thank you for another great video.
best regards
Yes very clear
Thumbs up done nice video presentation sir tnx
So nice of you
Thanks 🙏
best regards and special thanks
good video as always...live is always connected to the lamp...in case i conected the other way is no effective the serie lamp circuit?
Hi, some of the electricians use"KLY POWER CIRCUIT" for repairing smps power supply.We want to know about this this circuit diagram and about its benifits or disadvantages. Does it safe to use it?.
Please make a video about this kly circuit
The best explanation thank u sir ❤
Good evening, Sir pls add some videos on automotive ecu/ecm troubleshooting.
Can you explain why resistance between two power terminal showed in mega ohm even its shorted?
Thanks
Thanks a lot for your valuable support
I learned some new things! Thank you!
Awesome, Thank you and Happy Monday to you!
best regards ans special thanks
Good Morning Brother
Asalam o Alikum
sir ALLAH sy dua hi k apko salamt rakhy khush rakhy or sahat wali zindgi ada ker
Through your video I m going to be electronic engineer
Thank U very much this is quite wonderful.
Allah bless you bro👋
best regards and special thanks
GOOD TICHING KARTE HO AP THANKS 👌🌹👌🌹😆😂👌🌟💫
best regard and special thanks
Hi haseeb, as I am learning just wanted to know if I could use a led bulb or not.
best regards
no we cannot use LED lamp,
we need tungsten 60 watt or 100 watt lamp (which have resistive filament)
good explation of circuit repair
Mr. Hasseb, why need to remove the ground cable?. I used series lamp for ups repair, lamp light up and ups not turning on. After remove the lamp and power up ups, then it is able to power up. Kindly advise. Tq
Experience got from you
👏👏
Brilliant thanks 🙏
You're very welcome
SIR THANK U FOR THE VIDEO , IAM WARUNA FROM SRILANKA SIR CAN U PLZ SHOW THE IC REMOVAL TOOL THAT U USING IN THIS VIDEO , THANK U SIR
thanks a lot
it is WELLER WR3M made in germany
you can find it online. it is abouve 3000 USD. its routine maintenance is also expensive
i suggest to get HAKKO 701-15 that is cheaper than this and its maintanance is very low
May be worth pointing out use a incandescent bulb 100w is best (not LED or energy saving type)
yes brother it is incandescent (Tungsten Lamp 100 watt )
it is not LED lamp
Another fantastic video dear friend 😌
best regards and special thanks
Sir you checked resistance with multimeter on the input of smps.any particular range is there.what is the use of measuring that resistance
Normally it is above 100k and above
If it is some hundred ohms then it will be a problem
@@HaseebElectronics sir I checked on ATX power supply smps of PC the voltage at the DC rail capacitor is 315vdc and it is maintaining.when I checked the circuit I found that the pwm ic tny2768pg source and drain was shorted,it has internal MOSFET.i checked in the circuit and it was shorted and I taken out from the circuit the ic still shorted.There is no output at the output side of smps and the fan is not working.but the fuse is not blown even the source and drain of ic was shorted.why
Sir this video is very good but my problem is the which IC you use in this circuit please guide me
It called the serial lamp tester
Aren't you creating a voltage divider with the light bulb. So only 1/2 voltage will be at the board ? Or am I thinking wrong?
exactly it is series load connected in series with input line of UUT / DUT. during normal operation the lamp will not effect too much
but in case of hogh current consumption by UUT/DUT (during any failure / error / abnormality) the series lamp will protect the circuit from any further damage
for example, if there is anything short circuited in UUT/DUT, the lamp will glow full instead of any possible damage in the UUT due to any unexpected short cirfcuit
@@HaseebElectronics Thank you sir !!
What is the model # of your desoldering pump and where can purchase it? Thank you .
it is WELLER WR3M rework station, made in Germany. please check video number 511 for more details about my rework tools
Weldon keep sharing
best regards and special thanks
you are the best keep going
I think what you are saying about the lamp is that it causes a large voltage drop across its filament if a short occurs in the circuit. A shorted current will flow, but it will be greatly reduced due to the voltage drop in the lamp. The short could occur after a number of otherwise good components. Is that correct?
Thank you for very good advice.
You are welcome!
What is the reason reverse probes in resistance mode ? any reason please tell us
Doesn't make sense? If there was a short, why was the fuse not blown? Maybe you replaced the fuse without telling us?
great
it's fuse was burnt out and I already bypassed fuse with 1 ampere buss fuse wire to demonstrate the problem instead of proceeding to input short circuit diagnostics
3:35 can you explain me why is best practive to remove ground wire connection for better safety!!! thx learning every day
great info sir
best regards and special thanks
Is there any alternative method electronic protection circuit without blub
Thax
thank u sir for this kind of great video..sir how we can know about the smps power supply ampere
please check video number 586 for current measurement
Why live earth wire can't be on series lamp ? Thanks... Greatings from Portugal 🇵🇹 🌟
most welcome
during repairing, in my experience that it is safe to use 2 wires (line & neutral) without earthing
just connect earthing wire for final testing
Can I use series lamp in inverter battery input
tnxs mr haseeb keep shareing
best regards and special thanks
after lone time very good video sir how I will by same de soldering pump
best regards
it is WELLER WR3M made in Germany
you can check some local supplier or purchase online
How do you determine neutral and live wires with a plug that doesn't seem to differentiated? In the U.S. we have neutral, live and earth.
👍
it is my pleasure
I think it is good to use a low watts bulb so that little current can flow through the circuit, for example 50 watts and not 200 watts..
yes dear
50 watt, 60 watt, 100 watt, 200 watts lamps are used according to the load size
Great videos Haseeb. One question. Does the lamp must be 100w? Should a 60W or else work as well?
I imagine it's all about not to burn the lamp because if the lamp burns out then the lod will fall onto the power supply fuse
HOW ARE YOU BROTHER THANKS FOR EVERYTHING WHAT YOU LEARN US YOU ARE MY HERO KEEP IT UP PLEASE,ANYWAY BROTHER I CANT GO WITHOUT ASKING A QUESTION I AM STRUGLLING WITH A 33 GIGA OHM RESISTOR THE COLOURS ARE ORANGE,ORANGE,WHITE AND GOLD SO MY QUASTION IS,IS THERE ANY CHANCE THIS RESISTOR CAN GIVE A CONTINUITY RESULT IF IT IS GOOD?
Nice, thank you for your nice effort, my friend, I have a question, do you have an explanation about solar inverters?
Sir, What should be the wattage of series lamp as compared to that of the object to be tested? Pl explain in detail.
Thank you haseeb...
special thanks
MashaAllah great effort 👍🇵🇰
So beautiful beautiful very very nice video your brother😍😍😍👍👍🌹🌹🌹
best regards and special thanks
Use of this series lamp will also do shock prevention by reducing the current flow?
no. if we will not take care for earthing. this series lamp is also dangerous
because some milliamperes can damage human body
Thank you so much sir Hassib
Most welcome
hello , can You tell a name of disordering device .
it is WELLER WR3M rework station, made in Germany. please check video number 511 for more details about my rework tools
Sir can we use anykind of lamp here?
We need to use old type
Tungsten filament lamp 60 watt or 100 watt
I try this safety bulb but with 160watt bulb instead
Connect it to my atx power supply
And the bulb is kinda half glowing
Its measured 100ish volt on ac side
And the dc side is 200ish
Whats my problem sir?
Is it short somewhere?
Can you make a episode. For that lamp..we need deep explanation how a single incandescent lamp can protect a electronic circuit.. how he behave in a circuit yet he was just a lamp
How to choose the right wattage of the light bulb? And how to understand the light result? (no light, low light, full light, quick flashing, slow flashing...?).
Thank you, sir
Hi mr. Haseeb, you have excellent videos. Do you know what is the replace IC of this ic number Hc2468?
If the circuit board was good, series bulb wouldn't illuminated . Isn't it?
if the circuit is good, and lamp is higher wattage for example 100 watt. that time the lamp will not glow.
just in startup, it will glow for a moment, that time the empty capacitor tends to draw surge current for initial charging,
if circuit have some short circuit, that time the lamp drops all the voltage across itself, and protects the circuit from more damages
Hasseb.
If you can explain how can check SMPS transistor failure.
🙏