Very detailed explanation with graphics and tools. I am just learning to repair a dishwasher where some functions such as drawing in water and heating the water were out of order. I have found the two output pins (pin 14, pin 12) for these two functions were connected with the VCC (pin 9 as shown in your diagram) in the ULN2003A directly i.e. they are shorted. This means the transistors of these 2 channels were damaged. Thus the relays for the relevant functions were unable to work. I am a beginner in DIY repairing this appliance and I was not certain what I found. Now your explanation clarify the issues. Thanks for sharing your expertise knowledge.
best regards if output pins are connected to either +ve or -ve supply it will damage the ic. sometimes input pins are connected to +ve or -ve, that is normal but the output pins must not connected to ant supply line thanks for your valuable feedback
Hello once again my dear brother Haseeb! Once again another fine video and a very practical one for me. One year ago my Samsung side by side refrigerators went out. It seem that the compressor could not start but was trying as I could hear the overload trip after a period of time and reset later. The Compressor was very hot and lock rotor current measurement very high. Located the processor board and after careful study determined that the compressor run relay (12v 16A) was energized but was not sure if contacts had welded in the close since I was not able to hear the contacts reset when denergizing the compressor via overload. Replaced the capacitor run relay however when removing the processor board from it’s supporting case I discovered the Electrolytic starting capacitor for the compressor. It showed signs of over heating and leaking. It tested very low so replaced it. Due to the numerous attempts of the compressor to start the start winding had opened. Didn’t want to delay matters so I called in the Samsung professionals to handle the matter since now I realized the compressor will have to be changed which meant the system will have to be opened, refrigerant removed, evacuated and recharged. I have been trained to do air condition and refrigeration work and have necessary tool and equipment however I am now retired and don’t do a lot of that type work except on my own systems so I don’t store refrigerant or nitrogen at my home. To make a long story short, Samsung repairmen did come out and the compressor was bad so it was replaced and there was a leak in the condenser coils that was brazed. The overloads were changed but the compressor still failed to start. The processor board was changed and the compressor started properly so the system was evacuated and recharged with refrigerant. Now that was a costly repair but I still have the old processor board and you have now shown me through this video a simple way to test the darlington driver I.C.’s which I suspected one channel was open from a test I performed. I suspect the channel from the driver l.C.may have shorted from emitter to collector since the compressor started as soon power was applied with the old processor board and there should be about a 30 to 45 second delay before the compressor start. Thank you for your time my friend as I know this was a very long comment. Thank you for making me a better technician.
thanks a lot for considering my efforts valuable your experience in samsung product and its restoration is really painful please accept my best regards
I've the same kind of problem on our Samsung SBS refrigerator. We bought it in 2006 and has been working 24/7 and never got out of order since then. But a month ago, electricity went out for 45 minutes. It came and went instantaneously 2 times in this interval. Faulty ever since. Samsung doesn't even support spare parts as they don't accept for repair. I called the backup service that came before for install, but he did nothing but change the relay on the card and went by saying that there may be a short circuit in the cables. There is energy going to the compressor, but there is not even a buzzing sound, not getting warm and even the fan does not work. I found a workshop manual for this model on the internet and checked some troubleshoot. I executed forced operation on compressor by myself. Of course, I have information about the security measures to be taken. When I plugged in the cable, there was a buzzing sound from energy and then I turned it on. Compressor working as it should be quietly. Even started to warm up. I did a continuity test on several wires and found continuity on multiple wires, but possible due to connection to common wires. Also found ice maker sensor is faulty which is not working in the whole cabinet. But my guess is that if the fan is not working, the fault must be on the card. There must be a fault in one of the npn type Toshiba TD622003APG darlington sink driver that controls the relays. Since this driver is no longer manufactured, it is recommended to use TBD622003APG instead. But although it offers the same input and output values, I am not sure if it will be compatible with the card since it is more advanced because I do not have experience. But I like to investigate and solve the problem.
اسلام علیکم ورحمتہ اللہ وبرکاتہ تمام اہل اسلام سے گزارش ہے نماز قائم کریں قرآن مجید کی تلاوت کیا کریں اور مستحق افراد کی مدد کیا کریں اللّہ تعالیٰ ہم سب کو اچھے کام کی توفیق عطا فرمائے..
Wonderful explanation Sir. Could we use this same circuit with ULN2003 in 24V system? Here you are using 5V for switching, Can we directly use 24V in the input side? Thanks in advance.
I have uln2003L on my oven range. Can I perform troubleshooting directly on the board without removing the IC ULN2003L? It would seem less trouble. Wonderful video you made!
I think you can also set the multimeter on diode mode, and connect the positive lead to the ground pin and test all the pins with the negative lead to see if theres a diode drop or a short. Have you tried this method?
Alsalam ealaykum wabarakatuhu brother. I'm far far away from this business but I had to deal of repairs because those who can't do their own job. So even I understood your explanation thanks a lot for this. I searched but maybe I don't know the way to find it. Is it possible to check the condition of these drivers with multimeter or should have to follow the basic instructions you gave already?
@@Asian_Connection all these in Generic number ULN2003, ULS2003, ULQ2003, F9667 are same, prefix letters show the manufacturer data and the suffix letters and digits define the temperature, packing, applicability etc function wise and usage wise these are same
Nice video. i have a question Please, If Microcontroller switching 24V 500mA Load by using UNL2003 Then PIN9 and All the Loads have common +24 But the Ground Pin 8 this will be (5v Power supply GND) Or The 24V Power Supply GND. thanks
Question I have a tlc TV board with the power supply built with the motherboard attached but am only getting 165v from the main capacitor and the hot side and bridge rectifier diodes working plz help.
TCL MODEL:L32E4200A POWER SUPPLY: 110-240V- 50/60HZ 45W CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BÅCK) NO USER SERVICEABLE PARTS INSIDE REEER SERVICING TO QUALIFIED SERVICE PERSONNEL CB certificate No CN30850-M2 Made in Hui Z Serial No.: OFE118958C-1279
KID65783 is linear bipolar switch and it have 8 channels and it have 18 pins while ULN2003 is 7 channel darlington transistor array and it have 16 pins so these aren't compatible
السلام عليكم ورحمة الله و بركاته Brother Abu Haseeb I hope you are fine I have a question how UPS works Whether you can put one or more videos explaining the correct method. Because I have a UPS the transformer device that works and produces electricity but does not transfer it to the outlet for work. The device that I have is a Fake product that contains only one relay and a comparator lm358n and a processor 12C5204AD_STC God bless you Your brother Fawaz. From Algeria
it is transistor array to drive relays, solenoids the weak signal produced by the processor cannot drive the relay winding so his transistor array works as a switch
because microcontroller have very low output current and it cannot drive relays or other things, so this ic is used to amplify the signal to dive relays
![ILLSLICK - KILLSHOT REMIX [FULL VERSION]](http://i.ytimg.com/vi/RIK8RrqIAzE/mqdefault.jpg)
Very good sir....Zajaa kallah
Very detailed explanation with graphics and tools. I am just learning to repair a dishwasher where some functions such as drawing in water and heating the water were out of order. I have found the two output pins (pin 14, pin 12) for these two functions were connected with the VCC (pin 9 as shown in your diagram) in the ULN2003A directly i.e. they are shorted. This means the transistors of these 2 channels were damaged. Thus the relays for the relevant functions were unable to work. I am a beginner in DIY repairing this appliance and I was not certain what I found. Now your explanation clarify the issues. Thanks for sharing your expertise knowledge.
best regards
if output pins are connected to either +ve or -ve supply it will damage the ic.
sometimes input pins are connected to +ve or -ve, that is normal but the output pins must not connected to ant supply line
thanks for your valuable feedback
Lk 10 amazing 👍👍😊😊
keep sharing
5 lyk bhai good n informative upload Kiya he aapne
ہمیشہ کی طرح بہت انفارمیٹو ویڈیو بہت اچھے
Like 18
So informative 👌🏻👌🏻👌🏻👌🏻NYC sharing brother 👍🏼👍🏼
Zabadust good shearing and very informative uploading Allah pak ap ko salamti wali zindagi atta farmay aur kamyabi ki boalndiyan atta farmay ameen
Hello once again my dear brother Haseeb! Once again another fine video and a very practical one for me. One year ago my Samsung side by side refrigerators went out. It seem that the compressor could not start but was trying as I could hear the overload trip after a period of time and reset later. The Compressor was very hot and lock rotor current measurement very high. Located the processor board and after careful study determined that the compressor run relay (12v 16A) was energized but was not sure if contacts had welded in the close since I was not able to hear the contacts reset when denergizing the compressor via overload. Replaced the capacitor run relay however when removing the processor board from it’s supporting case I discovered the Electrolytic starting capacitor for the compressor. It showed signs of over heating and leaking. It tested very low so replaced it. Due to the numerous attempts of the compressor to start the start winding had opened. Didn’t want to delay matters so I called in the Samsung professionals to handle the matter since now I realized the compressor will have to be changed which meant the system will have to be opened, refrigerant removed, evacuated and recharged. I have been trained to do air condition and refrigeration work and have necessary tool and equipment however I am now retired and don’t do a lot of that type work except on my own systems so I don’t store refrigerant or nitrogen at my home. To make a long story short, Samsung repairmen did come out and the compressor was bad so it was replaced and there was a leak in the condenser coils that was brazed. The overloads were changed but the compressor still failed to start. The processor board was changed and the compressor started properly so the system was evacuated and recharged with refrigerant. Now that was a costly repair but I still have the old processor board and you have now shown me through this video a simple way to test the darlington driver I.C.’s which I suspected one channel was open from a test I performed. I suspect the channel from the driver l.C.may have shorted from emitter to collector since the compressor started as soon power was applied with the old processor board and there should be about a 30 to 45 second delay before the compressor start. Thank you for your time my friend as I know this was a very long comment. Thank you for making me a better technician.
thanks a lot for considering my efforts valuable
your experience in samsung product and its restoration is really painful
please accept my best regards
I've the same kind of problem on our Samsung SBS refrigerator. We bought it in 2006 and has been working 24/7 and never got out of order since then. But a month ago, electricity went out for 45 minutes. It came and went instantaneously 2 times in this interval. Faulty ever since. Samsung doesn't even support spare parts as they don't accept for repair. I called the backup service that came before for install, but he did nothing but change the relay on the card and went by saying that there may be a short circuit in the cables. There is energy going to the compressor, but there is not even a buzzing sound, not getting warm and even the fan does not work. I found a workshop manual for this model on the internet and checked some troubleshoot. I executed forced operation on compressor by myself. Of course, I have information about the security measures to be taken. When I plugged in the cable, there was a buzzing sound from energy and then I turned it on. Compressor working as it should be quietly. Even started to warm up. I did a continuity test on several wires and found continuity on multiple wires, but possible due to connection to common wires. Also found ice maker sensor is faulty which is not working in the whole cabinet. But my guess is that if the fan is not working, the fault must be on the card. There must be a fault in one of the npn type Toshiba TD622003APG darlington sink driver that controls the relays. Since this driver is no longer manufactured, it is recommended to use TBD622003APG instead. But although it offers the same input and output values, I am not sure if it will be compatible with the card since it is more advanced because I do not have experience. But I like to investigate and solve the problem.
Hasan Sir Very Clean information video with Zero Doubt left on Uln ic ... 🙏🏻Thanks So much 🙏🏻
it is my pleasure
best regards
MashALLAH Great work Bhaiii 😇
Awesome mashallah excellent informative uploading superb job blue thumbs up thanks for sharing stay blessed and happy 😊 good luck best wishes
اسلام علیکم ورحمتہ اللہ وبرکاتہ
تمام اہل اسلام سے گزارش ہے نماز قائم کریں
قرآن مجید کی تلاوت کیا کریں
اور مستحق افراد کی مدد کیا کریں
اللّہ تعالیٰ ہم سب کو اچھے کام کی توفیق عطا فرمائے..
15:05
Mashallha very nice and useful tutorial. Enjoyed. Thank you for sharing. ♥️💗💖
بالتوفيق أخي الكريم
فيديو رائع
amazing video my friend
liked fifteen
Thank you Mr. Haseeb for such simple but well illustrated video.
You are most welcome
Fantastic video dear brother, have a happy Sunday!!!
Ma sha Allah great vedeo well explained thanks for sharing stay blessed always dear brother
Jazaak Allah khair dear sister
Nice video! Greetings from Dominican Republic!
Thank you very much!
Masha Allah brother very nice & informative video about circuit diagram
thanks a lot. best regards
MASHA ALLAH very nice vlog, super informative, a big thumbs up from my side, Imran from KAUP STUDIO
Thanks sharing your video nice tutorial
Great work always my brother 👊 give you super 👍 good luck
Sir haseeb gave us excellent concept . very very thanks sir
Most welcome
the best vid explain so far
অনেক সুন্দর ভিডিও 😊
বিশেষ ধন্যবাদ
@@HaseebElectronics thank you so much reply for the Bangla language 🥰🥰
Informative as always thanks for sharing 👍
بسیار آموزنده...موفق باشید🙏
thanks a lot. best regards
Subha Ka Salaam Bhai Saab & Habe Aa Blessed Day
Nice upload
Another talanted video
Jazaak Allah khair
MashAllah Bhai
Mashallah thanks so much for shareing brother
#1 teacher
Thank you 😊
You're welcome 😊
Love this video you are the best thanks for sharing
Great video
Thanks for your help
Jazak allah
it is my pleasure
Great informative video, May God protect you
thanks a lot. best regards
Ma sha Allah Great brother ❤
Masha Allah good work
thanks a lot. best regards
Very very nice sir thanks 👍
Very good information sir thanks
thanks a lot dear 💞
Really nice video with amazing information. You help me a lot, thanks.
Very informative. Thank you very much for sharing your knowledge and experience. Not everyone can do that.
best regards and most welcome
Very good made! Thank you from Germany.
It's my pleasure!
Thank you too!
احسنت النشر اخي الكريم فيديو رائع شكرا جزيلا
Chiarissimo la tua spiegazione. Grazie amico.
Good information bhai
Thanks sir. Great job again
Always welcome
Thanks once again for this compilation❤️❤️🙏.
You're welcome 😊
Very nicely presented. Thanks for sharing brother
thanks a lot dear sister
Great informative video shared with superb explanation like always... Keep it up bro..
Excellent knowledge sharing. Thank you sir.
Always excellent thanks for sharing
Extremely grateful video thanks.
thanks a lot
Thanks for your help 👍👍👍👍👍👍👍👍👍
Too much explain jajakallah
Masha Allah brother, Thanks for sharing this 💌
thanks brother very informatif
it is my pleasure
Thank you 👍
Amazing content 💓💓💓
thanks a lot. stay blessed
Wonderful explanation Sir. Could we use this same circuit with ULN2003 in 24V system? Here you are using 5V for switching, Can we directly use 24V in the input side? Thanks in advance.
بارك الله فيك
السلام عليكم ورحمة ٱلله وبركاته
جزاك اللهُ خيراً
اللہ یسلمک و یسعدک یا اخی الکریم
@@HaseebElectronics الله يجازيك في الدنيا و الآخرة أخي الكريم
Informative
Lk Masha Allah 👌💓good video dost plz stay conected💞
Very useful. Thanks
I have uln2003L on my oven range. Can I perform troubleshooting directly on the board without removing the IC ULN2003L? It would seem less trouble. Wonderful video you made!
Yes it's very informative. Please do some further videos on ac air conditioner PCBs. Thanks
yes more videos are coming soon
i planned a complete series on ac circuit
Good job thanks
best regards
Big thanks sir
lovely thanks dear
Im just wondering about something .. have the uln can get out the positive when it has receipt negative signal ?!
Thank you so much
You're most welcome
Excellent
You explain in a masterly way
I think you can also set the multimeter on diode mode, and connect the positive lead to the ground pin and test all the pins with the negative lead to see if theres a diode drop or a short. Have you tried this method?
Walikum Salaam
Nice sir
Thank you very much.
You are welcome!
thank you
it is my pleasure
Thank you sir.please upload LM324 IC video
Alsalam ealaykum wabarakatuhu brother. I'm far far away from this business but I had to deal of repairs because those who can't do their own job. So even I understood your explanation thanks a lot for this. I searched but maybe I don't know the way to find it. Is it possible to check the condition of these drivers with multimeter or should have to follow the basic instructions you gave already?
Wow, amazing video. Are all versions of ULN2003 interchangeable? So any version of 2003 can replace ULN2003L? Yhx
yes
ULN2003, ULS2003, F9667 ULQ2003, are same
@@HaseebElectronics thx for your reply. What about ULN2003an, ULN2003A...and any ULN2003* can they be a substitute for ULN2003L?
@@Asian_Connection all these in Generic number ULN2003, ULS2003, ULQ2003, F9667 are same,
prefix letters show the manufacturer data and the suffix letters and digits define the temperature, packing, applicability etc
function wise and usage wise these are same
Nice video. i have a question Please, If Microcontroller switching 24V 500mA Load by using UNL2003 Then PIN9 and All the Loads have common +24 But the Ground Pin 8 this will be (5v Power supply GND) Or The 24V Power Supply GND. thanks
Question I have a tlc TV board with the power supply built with the motherboard attached but am only getting 165v from the main capacitor and the hot side and bridge rectifier diodes working plz help.
please mention the model number.
written on the ID plate on TV set, so that it will easy for me to check the circuit and reply
TCL
MODEL:L32E4200A
POWER SUPPLY:
110-240V-
50/60HZ
45W
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING TO REDUCE THE RISK OF ELECTRIC
SHOCK DO NOT REMOVE COVER (OR BÅCK)
NO USER SERVICEABLE PARTS INSIDE REEER
SERVICING TO QUALIFIED SERVICE PERSONNEL
CB certificate No CN30850-M2
Made in Hui Z
Serial No.:
OFE118958C-1279
great video, can we test uln2003 just with multimeter in diode mode?
thanks a lot
no it is impossible to test in diode mode
as it is Darlington based
and it have biasing resistors
@@HaseebElectronics oh...okey, thank you very much for the quick reply and the great videos ❤
How does the defrost relay work in circuits without a test button? Tell me how to run the test mode
Hi , bro could you make video on, how compressor relay works on none inverter AC .TQ
Since there are diodes inside uln2003 ,why they put flyback diod on the coils of relays in such boards(air condition)
Can I apply 12volt dc
yes we can
it is normally used in 12 volt circuits
to make tester use 12v lamps
What is the numbering on the microcontroller for the board?
Sir is kid65783 ic equal to uln 2003?
KID65783 is linear bipolar switch and it have 8 channels and it have 18 pins
while
ULN2003 is 7 channel darlington transistor array and it have 16 pins
so these aren't compatible
@@HaseebElectronics ok Sir
Thank you
Can you please explain led TV panel voltages
sure
i will try my best to do it as soon as possible
i noted it
Sir, for uln2004 how much voltage is to be given to G and Vcc and to input and output.
maximum collector voltage upto 30V @500mA max
input Base voltage 5 Volt
Assalamualaikum, Sir can we substitute uln2003 for kid65004 ?
F9967, DS9667
Namaskar sar ji ceiling fan ka regulator kis tarah kam karta hai
Aslamalaykum
Sir Wht is different btw ULN2003 AN & ILN 2003 AN. ..
السلام عليكم ورحمة الله و بركاته
Brother Abu Haseeb I hope you are fine
I have a question how UPS works
Whether you can put one or more videos explaining the correct method.
Because I have a UPS the transformer device that works and produces electricity but does not transfer it to the outlet for work. The device that I have is a Fake product that contains only one relay and a comparator lm358n and a processor 12C5204AD_STC
God bless you
Your brother Fawaz. From Algeria
is it not suppose to amplify the voltage not give ground.
it is transistor array to drive relays, solenoids
the weak signal produced by the processor cannot drive the relay winding so his transistor array works as a switch
Aleyküm selammm
Wa alaykum salaam brother
Like💕
Why using this ic with all micro control
because microcontroller have very low output current and it cannot drive relays or other things,
so this ic is used to amplify the signal to dive relays
Glad to have my question answered and your utub channel is very helpful for us