Just watched your video a year after you put it up. It is about time someone actually took the time to show how to check each point along the circuit and find the component that is at fault. Now if you do a few hundred more of these I think I might start getting it. You taught me more that 6 months on you tube
Hi Eric, Sounds like either a DC Jack problem or a shorted component that is pulling the Voltage down.Good luck with the repair and thanks for watching.
This was SO awesome! I've been looking for videos like this for a long time, on how to methodically test and fix electronics. I found only a few others, which I really appreciate as well, but yours are just so much clearer (sound and visually), better explained and easier to follow than any I've found so far. I'm going to go through these two videos again. Thanks a ton!!
Hi Deochand, Have you checked out the links in the description to see if the schematic for the Dell M1530 is listed on on of them, thanks for watching.
Hi MrHannes1000,You can use Ground point or connect to the negative on the power jack.you need to look at the schematic and see if for the board you are testing has a common ground, or if you need to pick up -v at different points but in most cases on charging circuit it is common negative from input to output. hope this helps. thanks for Watching.
Hi Ronald i use RS Components or Farnell, what is the number on the chip, i would look up the data sheet for that chip so you know what it is and you would know that you are testing the correct out puts.
easy step by step explanations with great close ups in clear detail makes this video A+. I have been slowly been teaching my son with high functioning Aspergers and this is the kind he would need to see before I do it in front of him as you explain so well!
Hi Gowhar,You can use Ground point or connect to the negative on the power jack.you need to look at the schematic and see if for the board you are testing has a common ground, or if you need to pick up -v at different points but in most cases on charging circuit it is common negative from input to output. hope this helps. thanks for Watching.
very good video. but how do determine the 5V at pin 16 and how do you determine that pin 16 is dcout? Theres nothing to see at the schematic. So how to calculate? At 11:03 you say that you believe it should be 5V out. How did you get that?
You can use Ground point or connect to the negative on the power jack.you need to look at the schematic and see if for the board you are testing has a common ground, or if you need to pick up -v at different points but in most cases on charging circuit it is common negative from input to output. hope this helps. thanks for Watching.
hi and tnx for this great video. i dont understand how u can spot the 5v output that isnt shoun in the diagram. there is 19v indicator and after that 5v and 10v when doubled are not written in the diagram. how can u know or find that detail?
Hi ! It is very nice to see your clip of Mother Board testing. You explained it in easy way to understand it. I could able to understand your teaching though I do not know the basic of Electronics. Thanks for sharing. Silas Srinivas
you need to test your power supply with it not connected and see if you have the correct output,if you do and your voltage drops away when you connect it to the motherboard then something on the board is pulling the voltage down normally a short (Remember don't lay the motherboard down on a conductive surface when testing out of the case.)
nice piece of video i learnt a little bit but you didnt show where is the ground of the board and where did you connect your black probe. please show where black probe has to be connected. thanks a lot.
Loved it. I am brand new to electronics and this demystified circuit tracing using a diagram. Now I have to learn what all the components do. Even without that knowledge I can at least trace the voltages. I would have liked to see where exactly you connected the negative probe and how it was done though. Thank you. Very helpful. Subbed.
Thank you for your great videos. Can you please do more troubleshooting problems on laptop motherboards e.g. finding short circuit with/without schematic and/or boardview?
Hi Ossy30, If you get the chip number and do a search for the data sheet, it will show you the pin out of the chip, then you can identify the pins to test.Hope this helps,Thanks for watching.
I appreciate that this is a very old video, but it may help others to more fully understand how this circuit works if I make some observations. @11:56, the charge control chip doesn't work as you suggested: Q19 is a dual mosfet and pulls the end of the inductor L44 from 19V to 0V at high frequency, thus generating DC pulses as controlled by the charging IC. These pulses are smoothed firstly by the inductor, and then by the smoothing capacitors (C403 to C405). Diode D1 prevents the battery from backfeeding the charging circuit. Terminal 16 on the charging IC isn't an output - rather it's an input: it's the feedback from the output so the IC can control the output voltage by adjusting the frequency of the pulses delivered to the inductor and then onto the rest of the charging circuit.
Great video! Have a Lenovo ideapad, think it can run off the battery but not the charger. When you have the m/b out & the battery not connected, will you see a voltage at the battery connectors? Well, looks like you do! Thanks 🤓 plus I subbed
Great stuff Daz really enjoy your fault finding vids and they are excellently expained by you.Knowledge is power and you are sharing it which is awesome.
I suspect the chip that looks like a spider with 8 solder points with 19+v on the in side and 3.3v dropping to 0 on the out side. where do I get replacement chips for the charging circuit? Your video is very helpful. Thank you
very informative video mate..probably one of the best on youtube for diagnosing motherboard faults..one thing i need to understand what did u do to put negetive probe to ground terminal. is it some point on motherboard.?
video was very informative but I cant seem to find the schematic for a toshiba L25 S1216. I did take the mobo out and try to trace the circuits and and there was a cip that looked similair to the diode that you said might short. I get 19v on all 3 on the one side but the 4 on the other side only get 1.44ish the same that the batery poles out put is... 1.43
Thanks for watching,we don't have a a300 or a g62 motherboard to be able to do this,all you can do is work you way across the components following the schematic and testing components.
Great informative video, I enjoyed it alot. One thing I like to ask is from where we can get the map (schematic) of our motherboards to learn and practice, plz let me know, thanks..
**Help** At 3:10 you said that we need to "put the negative leg on the ground terminal" You did not show or describe the ''ground terminal" Where is it? What is it? Please help! Thanks heaps
+Richard Lebenholc just connect it to the negative feed wire that is most times the outer exposed bit of the dc jack I would not advise performing any test if you are unsure of positive and negative points on the pcb hope this helps thanks for watching.
Very useful video to repair laptop detailed description like this. Sir can you post more repairing videos for testing power on steps (s0....s5) and also how to find out shorting motherboard. Thanks in advance
i liked your video, but if the power supply checked out what the problem with the laptop , do i miss where you fixd the dtart up problem of the laptop ?
I could able to understand clearly about the flow and measurement of DC current in different components in the circuit board of laptop. Good work . Best Wishes !!
A really interesting video that goes into basic fault finding on the mother board. I have a Sony Viao laptop that is completely dead, with the AC power supply connected there is no 10V charge at the battery terminals so if I can find a circuit diagram with this video I am sure I can get the laptop working. Thanks
thanks alot. im still new in this repair electronic devices.. i dont even have basic electronic knowledge. while watching this video, i can now understand how to read schematic flow and check the real component on the board. hope it can solve my problem
Hi there , it was very useful and informative tutorial video . your explanation was clear and perfect , especially for beginners. i hope you will upload more like this tutorial video about repairing laptop for beginners . keep it up . thnx
I have an acer aspire 571 laptop, just wondering when the power button is pushed down, where is that on the schematic ? thanks...also how would you check the power button on the schematic ? thanks ...
Great video with easy to follow instructions. My AC adapter (rated at 19V) outputs 23V. I've tested 3 adapters from different brands and all output 23V instead of 19V. Is there any explanation for this?
Thanks, There are voltage regulators and voltage converters on the motherboard. They are normally fine with more than 5% overvoltage and will perform to spec. Also, most motherboards will give you BIOS warning through beeps or refuse to POST if the voltage is too far off spec.i would all so check the test meter you are using it may be showing more volts than is Atchley outputting and may need calabrating hope it helps.
Sir fantastic lesson I subscribed and I will check to see if you have similar video but with an actual fault and repair ? If you do please send me the video link for it. Thanks much.
I have one silly question...Where is black probe mounted while you test dc jack and other components? I guess it has to be somewhere on mb, ground?Thanks in advance, good tutorials.
You can use Ground point or connect to the negative on the power jack.you need to look at the schematic and see if for the board you are testing has a common ground, or if you need to pick up -v at different points but in most cases on charging circuit it is common negative from input to output. hope this helps. thanks for Watching.
Hello. I have HP 6530B. The problem is that my battery won't charge, 0 percent. I've bough new battery, but it's the same. Most likely i have some problem too. I've disemble it and i've found a scheme to track the charge path, but the numbers of the components in the scheme are different from those in my motherboard? Can you please help and tell me which numbers to check. Thanks.
Oh well I see the schem download and I got the asus one but I'm no electrical engineer and I probably won't be able to figure out what matches up with what at all lol I'm pretty sure the charging circuit (or at least part of it is on page 48 right? is it all the same for all asus models?
Hi there. Thanks for the videos. I am having troubles with my mother board it does not start up. I got the diagram but still I am not sure were to look to figure out it what the problem is. Have you any suggestions. Thanks
Great video, watched Part 1 as well I'm new to all this and this was exactly i was looking for for last few days Detailed schematic preview and board check step by step Will fallow up your channel for sure Great job!!!!
Hi there. This video is superb for a new starter like me. Would you like to explain to what did you mean by "put negative leg to ground terminal" and where is that ground terminal please. MANY THANKS IN ADVANCE.
That is awesome; however your links only include diagrams for 4 or 5 laptop models and there are a lot others out there. Is there a link to paid diagrams that might include a lot more variety?
when it changes from 19v on u16 pin 1 to 5volts out on the charging chip where did that say on the scematic? I do have a charging problem on my Medion erazer X7825 mother board which is anoying as its just ran out of its garantee
I have the same question: "how do I understand from the diagram that on pin 16 I must have a value of 5 volts?" I am checking the charging circuit of a Surface Book 2 and from the charging chip Texas Instruments bq25700A I have a voltage of 6 volts that does not charge the 7.5 volts battery ...
Normally I will have prefered a check on terminal output theatt going to the battery as first step to see if some thing is wrong on charger side or battery
hi great vid, could u help me on a question,, i have just replaced a faulty dc jack on a asus eee slim net book, have found first capisator missing, cannot find the valve to replace it, ps have 19v to battery, but computer will not turn on,,, thanks gary
This is great. thanks. I'll try it on my dead laptop....How about if the computer is not charging which i don't know yet when i installed a new replacement battery with just 25% charge in it then i accidentally turned on the computer, managed to opened the OS for a while then the laptop suddenly went off. what do you think was the problem. the battery surely didn't drain in so short a time it went on... hope to get your thought on it.
when i test the power supply the voltage is correct 19v but when i put it inside the dc jack, the voltage drops and keeps readin from 0.25 - 1.47. can you please show me what to do to make da voltage correct. thanks
11 ปีที่แล้ว
another brilliant video sir.... well done .......im newbie on this and i learn a lot in a simple way...thanks.....more tutorial sir...thanks
Thanks for the good video. I have questions. Are you using multimeter if where is the other pin touched to. Shouldn't there be 2 pin to check the voltage. i have hp dv6 3230us laptop. I broke my charger and connected by solder it back again. I might have done it wrong , now the laptop doesn't charge by any chargers, Any help? what should i do
the voltage of the dcjack is not stable. it keeps reading from 0.25 - 1.47. and it applies to the coil and fuse. they both read those same results.please what can be the fault
Hi Shanadoia, You can pm me or on YT, it would be better on the the YT video if it is somewhat related to the video. i will do my best to help. Thanks for watching
Thanks, there is a wealth of knowledge on line, just start with the basics, learn component symbols to start with and work your way up understand how a component works ect, i plan on doing a vid on understanding schismatics at sum point. thanks for watching
Just watched your video a year after you put it up. It is about time someone actually took the time to show how to check each point along the circuit and find the component that is at fault. Now if you do a few hundred more of these I think I might start getting it. You taught me more that 6 months on you tube
Still helping people after all these years. Brilliant videos mate👍
Hi Eric, Sounds like either a DC Jack problem or a shorted component that is pulling the Voltage down.Good luck with the repair and thanks for watching.
This was SO awesome! I've been looking for videos like this for a long time, on how to methodically test and fix electronics. I found only a few others, which I really appreciate as well, but yours are just so much clearer (sound and visually), better explained and easier to follow than any I've found so far. I'm going to go through these two videos again. Thanks a ton!!
Excellent! A person that can explain something very complicated, very simply, to a novice. Thank you!
Very good job Daz, that video will help a lot of people. Keep up the great work.
Темата е представена на много високо ниво. Изложението е много компетентно, точно, кратко и ясно. Благодаря! Успехи!
Благодаря ви за вашия коментар и благодаря за гледане
This is really fundamental, the first diagram illustration I ever understood
Hi Deochand, Have you checked out the links in the description to see if the schematic for the Dell M1530 is listed on on of them, thanks for watching.
i am a Beginner it was one of the best two video part 21 and 2 , Great work clear to undersatand, Thanks from India.
keep rocking!
Where do you get your schematics?
Hi MrHannes1000,You can use Ground point or connect to the negative on the power jack.you need to look at the schematic and see if for the board you are testing has a common ground, or if you need to pick up -v at different points but in most cases on charging circuit it is common negative from input to output. hope this helps. thanks for Watching.
Hi Ronald i use RS Components or Farnell, what is the number on the chip, i would look up the data sheet for that chip so you know what it is and you would know that you are testing the correct out puts.
easy step by step explanations with great close ups in clear detail makes this video A+. I have been slowly been teaching my son with high functioning Aspergers and this is the kind he would need to see before I do it in front of him as you explain so well!
I really love how you explain this step by step. And I can understand your English too! Please keep these coming!
+Perry Bailey thanks
Hi Gowhar,You can use Ground point or connect to the negative on the power jack.you need to look at the schematic and see if for the board you are testing has a common ground, or if you need to pick up -v at different points but in most cases on charging circuit it is common negative from input to output. hope this helps. thanks for Watching.
very good video. but how do determine the 5V at pin 16 and how do you determine that pin 16 is dcout? Theres nothing to see at the schematic. So how to calculate? At 11:03 you say that you believe it should be 5V out. How did you get that?
You can use Ground point or connect to the negative on the power jack.you need to look at the schematic and see if for the board you are testing has a common ground, or if you need to pick up -v at different points but in most cases on charging circuit it is common negative from input to output. hope this helps. thanks for Watching.
hi and tnx for this great video. i dont understand how u can spot the 5v output that isnt shoun in the diagram. there is 19v indicator and after that 5v and 10v when doubled are not written in the diagram. how can u know or find that detail?
Hi ! It is very nice to see your clip of Mother Board testing. You explained it in easy way to understand it. I could able to understand your teaching though I do not know the basic of Electronics.
Thanks for sharing.
Silas Srinivas
you need to test your power supply with it not connected and see if you have the correct output,if you do and your voltage drops away when you connect it to the motherboard then something on the board is pulling the voltage down normally a short (Remember don't lay the motherboard down on a conductive surface when testing out of the case.)
Hi Yas, You can use Ground point or connect to the negative on the power jack.hope this helps. thanks for Watching.
Glad it helped you out,Thanks for watching
nice piece of video i learnt a little bit but you didnt show where is the ground of the board and where did you connect your black probe. please show where black probe has to be connected.
thanks a lot.
Loved it. I am brand new to electronics and this demystified circuit tracing using a diagram. Now I have to learn what all the components do. Even without that knowledge I can at least trace the voltages. I would have liked to see where exactly you connected the negative probe and how it was done though. Thank you. Very helpful.
Subbed.
Thank you for your great videos. Can you please do more troubleshooting problems on laptop motherboards e.g. finding short circuit with/without schematic and/or boardview?
Hi Ossy30, If you get the chip number and do a search for the data sheet, it will show you the pin out of the chip, then you can identify the pins to test.Hope this helps,Thanks for watching.
I appreciate that this is a very old video, but it may help others to more fully understand how this circuit works if I make some observations. @11:56, the charge control chip doesn't work as you suggested: Q19 is a dual mosfet and pulls the end of the inductor L44 from 19V to 0V at high frequency, thus generating DC pulses as controlled by the charging IC. These pulses are smoothed firstly by the inductor, and then by the smoothing capacitors (C403 to C405). Diode D1 prevents the battery from backfeeding the charging circuit. Terminal 16 on the charging IC isn't an output - rather it's an input: it's the feedback from the output so the IC can control the output voltage by adjusting the frequency of the pulses delivered to the inductor and then onto the rest of the charging circuit.
Sounds like either a DC Jack problem or a shorted component that is pulling the Voltage down.Good luck with the repair and thanks for watching.
Great video! Have a Lenovo ideapad, think it can run off the battery but not the charger. When you have the m/b out & the battery not connected, will you see a voltage at the battery connectors? Well, looks like you do! Thanks 🤓 plus I subbed
Great stuff Daz really enjoy your fault finding vids and they are excellently expained by you.Knowledge is power and you are sharing it which is awesome.
I suspect the chip that looks like a spider with 8 solder points with 19+v on the in side and 3.3v dropping to 0 on the out side. where do I get replacement chips for the charging circuit? Your video is very helpful. Thank you
very informative video mate..probably one of the best on youtube for diagnosing motherboard faults..one thing i need to understand what did u do to put negetive probe to ground terminal. is it some point on motherboard.?
Best instruction video of the charging circuit that I have seen, thanks.
+dmc200755 thank you.
Where did the black prob attach to?
Your video is a great one please keep it up but the problem i have is how to obtain the schematics and service manuals of these motherboards.
great video. but dont get where you put the black pen from the multimeter. which negativ terminal?
nevermind found an answer in comments. thanks anyway
glad you sorted it, thanks for watching.
excellent video thanks for posting ive just started getting into component level repairs and find this one of the most helpful on youtube. cheers
Yes i guess it helps to understand the drawing.Thanks for watching.
video was very informative but I cant seem to find the schematic for a toshiba L25 S1216. I did take the mobo out and try to trace the circuits and and there was a cip that looked similair to the diode that you said might short. I get 19v on all 3 on the one side but the 4 on the other side only get 1.44ish the same that the batery poles out put is... 1.43
Thank you for the kind words, Glad this helped you out.
Thanks for watching,we don't have a a300 or a g62 motherboard to be able to do this,all you can do is work you way across the components following the schematic and testing components.
I want to thank you for the time and knowledge you give of yourself. I learned a lot hoping to see more videos at this level.
My pleasure!
talented fella many thanks hope u continue @ many kinds of problems on laptops not only charging circuits and desktop motherboards tooo
Great informative video, I enjoyed it alot. One thing I like to ask is from where we can get the map (schematic) of our motherboards to learn and practice, plz let me know, thanks..
**Help**
At 3:10 you said that we need to "put the negative leg on the ground terminal"
You did not show or describe the ''ground terminal"
Where is it? What is it? Please help!
Thanks heaps
+Richard Lebenholc just connect it to the negative feed wire that is most times the outer exposed bit of the dc jack I would not advise performing any test if you are unsure of positive and negative points on the pcb hope this helps thanks for watching.
fixitdaz
Thanks very much! ok will keep that in mind.
Very useful video to repair laptop detailed description like this. Sir can you post more repairing videos for testing power on steps (s0....s5) and also how to find out shorting motherboard. Thanks in advance
i liked your video, but if the power supply checked out what the problem with the laptop , do i miss where you fixd the dtart up problem of the laptop ?
Thanks for your video. Very detailed. Do you know where I can get the charging circuit diagram for my laptop - Dell M1530? Thank you.
I could able to understand clearly about the flow and measurement of DC current in different components in the circuit board of laptop. Good work .
Best Wishes !!
A really interesting video that goes into basic fault finding on the mother board. I have a Sony Viao laptop that is completely dead, with the AC power supply connected there is no 10V charge at the battery terminals so if I can find a circuit diagram with this video I am sure I can get the laptop working. Thanks
very good video but on pin 16 on the memory chip you said that it must be 5W out where did you get it? I couldn't see on the drawing. Thanks
Rodica Lucut no clue without reviewing the video possibly of the schematic,thanks for watching.
Thank you my dear for your excellent teaching.
thanks alot. im still new in this repair electronic devices.. i dont even have basic electronic knowledge.
while watching this video, i can now understand how to read schematic flow and check the real component on the board.
hope it can solve my problem
Hi there , it was very useful and informative tutorial video . your explanation was clear and perfect , especially for beginners. i hope you will upload more like this tutorial video about repairing laptop for beginners . keep it up . thnx
It is nice one video.
and one question
how to identify where is the circuit faulty
It may be the fuse before the battery connection.
Why not go directly to the battery connector and then work backwards?
I have an acer aspire 571 laptop, just wondering when the power button is pushed down, where is that on the schematic ? thanks...also how would you check the power button on the schematic ? thanks ...
Great video with easy to follow instructions.
My AC adapter (rated at 19V) outputs 23V.
I've tested 3 adapters from different brands and all output 23V instead of 19V.
Is there any explanation for this?
Thanks, There are voltage regulators and voltage converters on the motherboard. They are normally fine with more than 5% overvoltage and will perform to spec. Also, most motherboards will give you BIOS warning through beeps or refuse to POST if the voltage is too far off spec.i would all so check the test meter you are using it may be showing more volts than is Atchley outputting and may need calabrating hope it helps.
Sir fantastic lesson I subscribed and I will check to see if you have similar video but with an actual fault and repair ? If you do please send me the video link for it. Thanks much.
hi
coud you tell where can i get the schematic diagram of the MSI GX720 laptop ,by the way
thanks for the video.
I have one silly question...Where is black probe mounted while you test dc jack and other components?
I guess it has to be somewhere on mb, ground?Thanks in advance, good tutorials.
You can use Ground point or connect to the negative on the power jack.you need to look at the schematic and see if for the board you are testing has a common ground, or if you need to pick up -v at different points but in most cases on charging circuit it is common negative from input to output. hope this helps. thanks for Watching.
Hello. I have HP 6530B. The problem is that my battery won't charge, 0 percent. I've bough new battery, but it's the same. Most likely i have some problem too. I've disemble it and i've found a scheme to track the charge path, but the numbers of the components in the scheme are different from those in my motherboard? Can you please help and tell me which numbers to check. Thanks.
Thanks, I will be doing some more soon time allowing, Thanks for watching
Oh well I see the schem download and I got the asus one but I'm no electrical engineer and I probably won't be able to figure out what matches up with what at all lol I'm pretty sure the charging circuit (or at least part of it is on page 48 right? is it all the same for all asus models?
very impresive explanation i understand very well thank you so much. hope there's part 3
Yes
Hi there. Thanks for the videos. I am having troubles with my mother board it does not start up. I got the diagram but still I am not sure were to look to figure out it what the problem is. Have you any suggestions.
Thanks
Great video, watched Part 1 as well
I'm new to all this and this was exactly i was looking for for last few days
Detailed schematic preview and board check step by step
Will fallow up your channel for sure
Great job!!!!
Hi there.
This video is superb for a new starter like me.
Would you like to explain to what did you mean by "put negative leg to ground terminal" and where is that ground terminal please. MANY THANKS IN ADVANCE.
The chassis is usually used for ground
You welcome, Thanks for watching.
That is awesome; however your links only include diagrams for 4 or 5 laptop models and there are a lot others out there. Is there a link to paid diagrams that might include a lot more variety?
+OwnSpark Cloud I will check links and update where posable.
when it changes from 19v on u16 pin 1 to 5volts out on the charging chip where did that say on the scematic? I do have a charging problem on my Medion erazer X7825 mother board which is anoying as its just ran out of its garantee
I have the same question: "how do I understand from the diagram that on pin 16 I must have a value of 5 volts?"
I am checking the charging circuit of a Surface Book 2 and from the charging chip Texas Instruments bq25700A I have a voltage of 6 volts that does not charge the 7.5 volts battery ...
this may be different for different boards you would need the correct schematic for your board
this may be different for different boards you would need the correct schematic for your board
Thanks. have you got information about Toshiba satellite C660 please!?
Thanks, There are links in the description.
enjoyed your videos the problem im finding is thati cant source the schematics any help you can provide cheers
hello can You please tell me if I can bridge a fuse since the fuses you test there are nearly impossible to find ???? thanks
thank you for vid sir where can i find scematic diagrams for laptop motherboards
Thanks For Watching, Glad You enjoyed the vids. You know what they say, Sharing is caring and all that.
Normally I will have prefered a check on terminal output theatt going to the battery as first step to see if some thing is wrong on charger side or battery
Hi danilo jacolbia, There are links in the description.Thanks for watching.
hi great vid, could u help me on a question,, i have just replaced a faulty dc jack on a asus eee slim net book, have found first capisator missing, cannot find the valve to replace it, ps have 19v to battery, but computer will not turn on,,, thanks gary
Can someone explain,Why did he assume that pin 16 on U16 chip is 5volts? (Batt pin)
Vladimirs Platacs I wounded this as we'll.
This is great. thanks. I'll try it on my dead laptop....How about if the computer is not charging which i don't know yet when i installed a new replacement battery with just 25% charge in it then i accidentally turned on the computer, managed to opened the OS for a while then the laptop suddenly went off. what do you think was the problem. the battery surely didn't drain in so short a time it went on... hope to get your thought on it.
when i test the power supply the voltage is correct 19v but when i put it inside the dc jack, the voltage drops and keeps readin from 0.25 - 1.47. can you please show me what to do to make da voltage correct. thanks
another brilliant video sir.... well done .......im newbie on this and i learn a lot in a simple way...thanks.....more tutorial sir...thanks
Thanks for the good video.
I have questions. Are you using multimeter if where is the other pin touched to. Shouldn't there be 2 pin to check the voltage.
i have hp dv6 3230us laptop. I broke my charger and connected by solder it back again. I might have done it wrong , now the laptop doesn't charge by any chargers, Any help? what should i do
thanks for the quick response, looking forward for something new.
Hello
where can I buy the scanner?
the voltage of the dcjack is not stable. it keeps reading from 0.25 - 1.47. and it applies to the coil and fuse. they both read those same results.please what can be the fault
I liked your tutorial, can i get others as well
Great videos m8. Made it easy to under and follow. Well done!
please where can I download the schematic diagrams of laptop mother board
Very well explained. One of a kind video
good day sir, do you offer training course for chip level desktop laptop motherboard repair?
Hi Shanadoia, You can pm me or on YT, it would be better on the the YT video if it is somewhat related to the video. i will do my best to help. Thanks for watching
What is a good ground to connect the negative tester probe to?
He may have used the chassis as the ground. Hope that helps
Just going through your videos Das I liked these two as well very methodical work excellent
looking curiously for new detailed videos of this nature.
Thanks, there is a wealth of knowledge on line, just start with the basics, learn component symbols to start with and work your way up understand how a component works ect, i plan on doing a vid on understanding schismatics at sum point. thanks for watching