SMD bad capacitor test / laptop - desktop computer & electronics troubleshooting
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- čas přidán 8. 10. 2016
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Thanks for watching it!
There is other video about main board chip Level SOS repairing:
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I had to watch your video a couple of times before I fully understood what you were doing. An excellent, well-explained and logical approach to locating a bad SMD capacitor, and a great tip on calculating it's probable value. Thank you very much for putting this video up on youtube!
The clearest and most efficient guide on short circuit finding and repair that I have seen on CZcams. Thank you so much for making such excellent training videos!
Great video- helped me do a sanity check on my Alpine PDX’s SMD capacitors before removing and replacing a bunch of them, let alone having to pay yet another Digi-Key or Mouser shipping fee.
Best video ever on the short circuits on capacitors, a lot of guru spend millions on words without getting to the point and you clarified the short circuit find to me in just one video with real tips
Never ever watch so clear video and so nice voice. Your style is unique and sharp. Every single second is useful.
Your explanation was like daylight. Good job thanks.
Bravo, the video is very nice, with visual explanation that helps even those like me who do not know English well. Thank you
Your voice is so calm. Easy to follow your steps
They are a headache when you are a beginner at repair. In LCD / LED TVs it is common to find one of them shorted but “reflecting” simultaneously also on other circuit components on the small and long PCB attached to the Panel. Thank you very much for the advice (6:57) and sharing. A sincere greeting from Mexico.
I didn’t get the bit where he said to copy the information of neighbouring capacitors. What does he mean?
As an English speaker it was a little hard to understand but not impossible at all. Within a minute I knew exactly what was being said and I actually learned A LOT! Especially the part about cutting off the search areas using those pads! I had no idea before now and already used that tip to repair another device.
Thanks a lot for this video!
Wow! My english level is B2 and I had absolutely no trouble understanding what he is saying. How is that even possible?
@@Daniel-ih5ei
Are you new to electronics like me?
Because I meant understanding the electronics jargon, not the language itself. If not, that's probably why!
*the more you know*
So you desolder the pads to isolate the area? How can you tell an area is bad or good once isolated?
"The bad guy in this movie"! Thanks for posting this!
Great Video!!! Thanks for sharing your knowledge and experience!!
Hi !
I felt easy to understand. good information.
Thank you for sharing clip.
Best Wishes
...and two years later; "Silas, where are you"? It has been long time since it.
Thanks for such an important video on fault finding
This is one of the best electronic explanation I have seen. clear and interesting. Thank you very much
Thank you, great instruction.
Great video hard to find a good video explaining this. You did a great job :)
Thank you! Excellent instructions video.
Very clearly laid out.
You just saved my £200 worth laptop!
Yeah, bad cap. Opening pads really help in diagnostics.
Thank you sooooo much Sir!
Your video was very interesting. You explained it very well for me thank you so much looking forward to see you next Video
Great video. Extremely helpful. Thank you very much for sharing your knowledge and skill
Excellent fault finding!!! Another method is to turn it on and leave it on. The shorting cap will get HOT. to find it, use a finger or a thermal camera (I used a Fluke Ti10).
Thank you. For the video. I could understand the procedure. I appreciate your work.
amazingly clear and simple ! thank you !!!!
Best repair educational video i seen so far. Keep up the great work. Big thanks. 😃
Thanks much Bob! Good info I will use.
Very instructional! Thank you!
A superb job sir.well done.keep up the great work sir.
Impressed great video thanks
Thank you so much for this video.
Great explanations, thanks !
All clear. Thank you for the time.
Very good tips. Thank you!
thank you. really informative video
Hi Bob!
I have a question, what would be the problem if the motherboard of a laptop does not turn on. But the red LED lights up when the charger is connected. I visually check the circuit but found no damage or burnt component. I checked some mosfets, they seems to be okay.
Hi Bob. Kalpon, i have a problem with the same board. its hp 2000 right? Well mine can charge an boot normaly but the problem is that once its on the u520 ic become hot and when i test all the capacitors that links to the ic most of them beebs on both side. what advice can i get, to keep trying to fix it or to just buy a new board?
Thank you! This helped me!
thank you sir you helped me a lot to learn electronics
Hey man 😘
Thank you so much
Big like
Thank you so much for 'Cutting to the chase" !
great Video i learn a lot thank you easy to understand
really appreciate your work Ive learnt a lot from your channel , it would be really great if you make a video on a homemade 200 watt inverter,. :)
Nice Video! Thanks for that knowledge!
Subbed ;)
Best lecture and trouble shooting.
Muchas gracias. Very usefull and thanks for sharing.
Excellent work Sir!
thank you i have rx 480 graphics card both fuse capacitors blown but also a smd (small one like yours) 2 are short circuit but I don't know the values so if i dont know the values what cap i put to replce them? what would be safe??? 0.1 ???
Very good tips, thank you.
Thanks sir 🙏🙏 for taking your time to explain everything
Thanks, well explained, I tested a video cable connector board and its faulty, thanks to your explanation, I have two questions, the letter next to the components means the type of the component is, for example, C for capacitor R for resistor? the other question is where I can get the replacements
I like your video tutorial and I always follow the tutorial, I hope there will be a pc computer tutorial you thank
I hope you do more videos like this one.
Thanks
Great video 👍 keep up the good work
Can I test regular capacitors in the same way as you test smd capacitors for continuity ?
Your explanation is very good and slowly and clearly and gradually takes you the point. Also you have and extensive knowledge in electronics.
Just one problem, the way you lifting SMD capacitor is damaging the board, because SMDs has no lead to bend as other conventional components. Why you don’t use desoldering tool like the pump to absorb the molten solder and clears all solder from the area. That gives you not lift the SMD component most of the time or in some cases you need to lift a little which allow you not to damage the printed board.
Hi! It is easy with a hot air and tweezers. When I moved to here, I didn't have a good soldering station until several months later. No everybody has one in other places where life is harder, so it is good to teach to work with rudiments. But back to the problem, most electronics components should be exposed to more than the solder melting temperature and for less than 10 seconds. I work many years as a process and manufacturing engineer too, and I have that very clear as designer since the beginning. In one car ECU video I was criticized by lifting the capacitor on the side. If I do it, will use the right temperature for short period of time, while hot air is very high temperature for maybe longer time. Automotive safety rules are very high, and also to replace the component by other brand no specified by the designer... Industrial SMT solder process and ESD manipulation exposure is where more latent issues happen, that ends two years later with the damaged components that we are repairing in this laptop main board. A good rework must include ESD, moisture removal, pre heat, flux and cleaning, in a very well controlled way. It depends of the situation for me to use pre heat, iron lifting, hot air, or component sucking. After many years doing rework since 1984, I am like an old surgieron with the knife, I know to take care of do not delaminate the PCB. But it is only with practice. Many times I watched youtube iphone repairs, it looks nice and fast, but those guys are just over cooking the telephone for next soonest fail. I use a lot the hot air. But in some cases I use the iron, and the one in the video is the iron attached to the same hot air soldering station. (There are more chance to delaminate the internal layers of the PCB with hot air than to damage the pad with the soldering iron. So I avoid hot air in multi layer PCB or safety components requirentes, unless components are too big). ;-)
how can i identify the working neighbor component to buy a new one ? theres no markings on it ... ? is there any possibility to measure it ?
Awesome awesome video with correct and easy to understand video!! I am that lucky to have found you but even more to be working on the exact same HP 2000 motherboard. The trick with the pads was GOLD! I manage to isolate the short to the PCH HM57 chip unfortunately... Can I fix that??
Very Good! Thx for your video! You can also check at the coils (especially bucks) for shorts. If yes, remove the coil and check it's pads to see which side the short is on. Cheers!
Thx for the useful info.
Those damn cheap little smd parts. Very impressive that you found it!
thank you for the video very precise and easy to understand , keep up the good work.
Nice video for testing and very clear
Hey guys I have a laptop
Motherboard where I’ve tested for continuity on some of the caps and found that there are quite a few around about 10 caps that are grounded on both ends. I haven’t tested the entire board but would this indicate that maybe a surge killed these caps, there were also some caps that both ends were not connected to ground as well These were all tested when connected to the pcb, should I despiser one end and test again or can we assume the motherboard is no good as there could be more.
Great Video. I learn more on repair electronic SMD equipments. Great Job. Ciao Max
Thanks... another helpful tips.
Thanks for sharing your knowledge
good and easy understanding, i have a proline laptop its going off after few seconds but the processor is not overheating
.. thank you sir for verry informative vedios .. good job..and God bless 😇🤗
Thanks a lot sir for your learnable video.
Like the simple way of explanation & nice work...✌️✌️✌️
Keep it up 👍👍👍
very useful!! thanks a lot!!
Your are the best!!!
i got an 17 r4 and when i plug it in. the light on charger goes out. so i took it apart unpluged the dc in and the charger will stay on but when i plug it in the light will go back out and when i plug in to the dc port i will see a spark. and the port smells it there a could that be a bad captor thats making it ark im going to test it in a few thanks
great video!
Does SMD mini capacitors have a negative and positive value? I always get confused if they could sold in any position. Let me know. I really wanna know more about thos small tiny caps.
Thank you so much!
Is there a case where a bad capacitor is in open circuit?
What if both side of the smd ceramic capacitor has no Beeping noises that come from multimeter?
man im fixing vga cards alot or tying,,,really educational i always new everything on that board is there for something good tips and tricks!! i wish you could get detailed,i no you can ..but certain big companies wont talk show schematics without worrying about getting in trouble for it ,lots of props!!! make some on vrm and the stone looking block resistors i need help ive got 10000$$$ in graphics cards that imm stumped and no one will fix them?? good video again..
so you are testing smd capacitors in circuit without a power supply using only the tiny 2mA provided by your meter in continuity mode? a board can have hundreeds of capacitors do i have to try them one by one?
Thanks for sharing!
very very helpful. Is there a video for resistor, IC and/or transitor ?
Nice video, and explanations, a bit mispronunciation when mentioning the main board but anyone can understand. Any way, thanks for the vid, and I might be late for this but at one moment you mention something about not knowing the rating of the SMD cap.... I think manufacturers use a color and size code for them SMD capacitors. You should look for the specifications sheet. I found one once and it was very useful. I hope that helps :)
Good video it's mega hard to find out what's the value of capacitor but use the value of the next capacitor thanks
Those pads don't seem as easy to find on a desktop motherboard. I've got a bad motherboard and a whole load of capacitors, big and small, around and behind the CPU socket are beeping on both ends. Capacitors on the lower part of the board however only beep to ground on one side. How do I narrow it down with all those beeping capacitors around the CPU?
Hi My old Dell laptop is starting only after more than 20times hit. After each hit on lighted and off. Help me please. What area of motherboard need me check? Thank you
.keep up the great work sir.
Otro video excelente, aquí decías que no sabemos pero ya vi el video donde si podemos saber con un osciloscopio :D, la verdad excelente contenido
Hello Bob, My name is Mike from Nigeria. I have an Hp Envy 23 touchsmart pc. there is power but no display on the screen. I tried to clear the bios but no luck. with your experience what do you think could be the fault pls? thank you Bob
Thanks very much now i understand how it works
Very good!
once we found the bad capacitor, how do we replace it since they are so small and not available for sales
Nice video, and explanations.
wow, perfect. i a problem with my tower case hp cpu, when i power on, it keeps restarting over and over, what would likely to be a hardware problem in the motherboard ?
THANKS IT IS HELPFUL
When testing those capacitors, what if you get a short beep on one side but no sound on the other side?
Great teaching
Hi Bob, I've been troubleshooting and repairing these types of problems for over 16 years. If you can afford a Polar Toneohm 950 its well worth the money. It would have found that short defect within 5 to 10 minuets. Great video though. Have a good one!
Lol, he's in India man. He's happy just to have a $3 multimeter.
@@robh1908 accent sounds greek
I removed a shorted SMD capacitor on a TV board, but the TV still doesn't work. The capacitor was very small. Should I put a new capacitor in order for the TV to work?
at least someone who knows how to explain.
and speaks proper english
Thanks for the explanation sir
Hi. I'm still learning, I have 3 ceramic caps on a board. When I test in continuity mode I don't get a beep when I touch the cap with the probes, but if I check in diode mode I'm getting a reading of about 575
Usually ceramic caps last longer than 'wet' caps and aren't usually the culprit. If you want to really test capacitors, you need to remove them from the board. That's testing for capacitance though and not continuity.