Toshiba C660 dead, no power, motherboard repair
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- čas přidán 20. 08. 2024
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You have an incredibly challenging work environment, Sorin! The mic you normally use blocks out the background noise for us. But this time, we could hear what you face daily. You have to deal with so much noise and distraction every day. And you have so little space to work on the things. All this, and you're still able to work so efficiently and teach us along the way. Wow! You are a really talented and patient teacher. I'm sure the mic will be sorted in future vids. Thanks again for all your efforts!
Natural selection of tools - You've made my day, first I was laughting, then i realize that on my desk is exactly the same situation when I repairing electronics, tools used very very rare lands on the floor when the desk ends ;)
I like playing Your videos when im repairing things, even if cant watch, just to hear what You have to say
Started from the oldest and watching every day for few hours
Few tips from Your videos was very useful, keep it up, good work!
I really like the ambient noise, it's simply nice, itțs the vibration of that place.
I enjoy the fact that you are not editing out the road blocks and rabbit holes. Keep up the great work!
thank you
your channel has finally become my Laptop reapair bible as well as my mobile phone repair bible.....your videos have been really insightful and also you have successfully helped my courage. the whole New year Holiday has really helped me to increase my knowledge in my chosen profession. thanks a lot sir Sorin)
finally found what I've been looking for in years. I'm so grateful.
Great video! That was painful. Just do it your way, the way you like to do it. I like how you do it, quick, efficient, precise, smart, and the most important thing, it works!
When you explain which mosfets to short and which ones not to short, that is enough. Do it your way, that is the best way. and Thanks!
thank you, i will
hey some of us are just learning ...take it easy on the noobs :)
Great job
I became addicted to your video and check the bell video cause you are the best
Thank you
Me, too. I'm not watching movies anymore, your videos are way more interesting.
I want to chat with you on whatsapp. Add me +2347038738987.
Thank you so much for the teaching i managed to fix my dead laptop , keep up the good work will now
iam from indonesia, and i always watching you, to learning 19v power must on, etc, thanks, success for youu....
From a raw material, am start learning new things from your video and am deeply into it, thanks much, Sir..
i am really addicted to your videos, i got too many things from your video thanks.. thats unique specially the way you
describe the chips,faults,and other problems....
i like you trying new approach in fixing... but i like when you fixing with minimal tool. but either way, you are very kind to share this information with easy to followm not rushing even when alot of customer there. thank you sir.
Nice watch! My last company where i worked before the pandemic. 😊
A huge thanks for all your work and effort. Really glad you take the time to teach how to solve problems like this.
Keep up the great work. Wish you the best :)
It is easy to understand any subject like electronic or auto diagnosis, but trying to explain to others in words is tougher than most people thin when you are doing it on the fly without rehearsing before filming.
Great. This was so very helpful to identify my issue and explain/guide how to fix. Worked for me...thanks. Really like your honest, open and chilled style too :-)
Well done Sorin, a good return to form after being sick
Thank you
Great Job. Your videos helped me a lot to fix my motherboard. Even though I had the schematic was still finding it difficult to figure it out. Great help. Thank you.
Good realistic video, things don't always go to plan, it was still good to watch.
I miss your videos, nice one. Thanks a lot.
I like when you use the power supply, and I understand how you do it. I don't have a problem you using the power supply. Great video like always
Hey we all have those days of forgetting stuff, you are not the only one :-).
You still have a bit of a cold, you are not 100% yet.
You may want to discribe the power channeling mosfets as "Gates", open or closed gates, for people that dont understand.
Usually if the mosfet has a P junction, then the gate voltage is lower than the drain to switch on, and a N junction gate is higher than the drain, as far as i can remember, but mosfets are something i didnt learn much about lol.
i could be wrong LOL
no, your right
Actually It's the difference beween the gate and source (Vgs) which turns on a MOSFET. N channel, the voltage is positive beween the gate and source, P channel it is negative. This doesn't mean you need a negative voltage on the gate, only negative in relation to the source. In that circuit, the source is connected to 19V, the drain is the output to the rest of the laptop, and the gate would get pulled low to turn it on. I found a quick tutorial here which might make sense of it. www.baldengineer.com/p-channel-mosfet-tutorial-with-only-positive-voltages.html
You are the best you explain exactly what i need i have the same laptop and after i watch your video it really helped me out and it was exactly the same problem thank you so much for explain step by step 👍🏻👍🏻
hi Sorin , had an LG G3 totally dead , last resort warmed entire phone up (on a hot radiator) hey presto back to life!!!! would never have tried this until i saw you do it with a samsung CHEERS!!!! (btw i only use the LG for a screen for my quadcopter..lol) also has a no read sim card issue, but thats another story...keep up the good work
Hi SORIN!!! Thanks for your time, your effort and above all your explantion, for now it's 100% accurate -at least with my level- but for your way of repairing I don't mind since you can fix the issue so don't waste time trying to do (default repairing) this is obvious, keep shining and as I already said you are inspiring and I became addicted to your channel too, have a nice day!!!!
u r right, thx
I gave u, 1,000,000 salute sir.. Very nice video, more learns a lot
You are my good Theacher
thank you for videos! I'm learning more about mainbord, saludos desde Lima-Peru.
Some charging ports can become damaged through constant wear. I have found on some DC/IN connectors that the central pin & the side rails can sometimes become loose or bent enough to not sustain a proper connection with the adapter end.
Thank you!!
I hear the Christmas songs in the background!!
Best guy on CZcams topman
Excelent video Sorine !!! tine-o tot asa,esti meserias.
multumesc :)
I got accepted in electronics engineering and i went for it only in hopes of this person, GreatScott!, ElectrooBOOM and few more pages since they teach me lot of things and with help of 2 more people, now i repair TV's and i want to grow to be able to repair everything. Thank you electronics repair school.
you are excellent teacher i learn from every video thank you
Tip: When searching on google for images select 'tools' (under the search bar), then select size.
Nice job and thank you very much because you don't replay on any comment for me on your videos.
Don't worry Sorin :) We appreciate your effort!
I love your videos! Its smart, exciting, and best of all its very unique!
Thank you
You are my idol, Sorin, thanks a lot...
Where is my shorted Mosfet 😁 I can't believe you replaced a Mosfet
I've been fixing laptops on the side for years And these videos are getting me to go back and look at the ones where the dell blue light turns off when plugged in!! So exciting haha
that should be easy :) let me know
You can test the 2 first mosfets located above the ram slots just by removing the hdd, ram cover :) you just didn't notice them
thank you sir and get well soon.....😷
Thx
I think Sorine could fix a Laptop with Stone age tools...
many thanks,sir.
what !! That is a video that i have tried to get for years. I have no word to say,just keep silent and listen to your video
you'll always be the best💯
Oh jeez, I just did an overhaul on one of these, I think just slightly newer. Slick, when they have modern SSD and RAM.
From 52:40 on remainds me on thinking about "Monty Hall Problem" /game show with three doors , goat or brand new car ;-)
Good Video Sorin! Thank you
enjoy watching you work .thanks
very helpful THANKS
Great job. I think we will be happy if you make any videos of anything what you fixing without learning us. Who following your videos they understand what you doing. For example I would like to see hou you working every day :)
soo boring ...you dont want to see that
Electronics repair school why not mate. All the time I'm happy watching your videos.
Those 2 MOSFET are P-Channel and their gate are connected together from the same source. So the 2 of them should be opened or closed at the same time. Thank you Sir i am learning alot from you
Thamks
I like your dogdy way of learning elektroniks. Its wery useful for me, its like i hawe some nolage, but i'm not so god in matematiks. So i need the croul way of learning how it works. Beutiful way you learning away elektroninks on. Thanks from Norway
48:47 never seen someone so happy after replacing a mosfet xD
Damn that music on background from shop would drive me insane, i would not be able to work
Sorin, cei doi mosfeti sunt de regula de tip P chanel. unul e ous invers fata de celalalt. Daca chiar ai nevoie, cauta schematics pt hp 4510s si poti observa. Sunt si modele cu unul P si unul N, chiar si modele cu un singur mosfet P ch. Sau uita-te ce scrie pe spatele mosfetilor si vezi ca sunt la fel. Cauta apoi schematics pt ei pe net.
Background sound is noisy....
But the Tutorial is most important thing
Thanks
thank you
I had to do that in 2010 when my multimeter died and had no way of repairing things lucky i was that i just got an Oscope
We love you!
i love you all :)
You are the best one this i didint finde bether video for laptop reparing yet.i hawe some thing what i didint figure yet meybe you now somting abot this,i change the cels on laptop batery and now it shows plung in charging but its not charging i lef it ole day long on charger and nothing.Taptop battery pcb shots down i dont no how to reset is.Thank you for answer and big Hello from Hungary
Great job. hello from Greece!!
To see the voltages you have to press the "Measure" button and make sure you have your channel set to DC and your prove attenuation is the same as configured on the scope. Also press "AutoSet", because sometimes if the signal is too low, it can't read the correct voltage.
On the computer i don't know if this option is possible.
For this youtube channel you could have bought one of those USB scopes, they are cheap and would work great for you.
Like a pico usb scope?
Yes, that is correct Cin
Yes, but its not a cheap scope. I hope people don't get the impression that all usb scopes are cheap. Sorry for the confusion, it just seems that it was implied.
Well, it doesn't need to be that brand, but usually they are cheaper than the one he is handling.
True, but they are also usb scopes that are same brand as his.
I think most problems are because they don't use laptop cooler for cooling hence it gets hot causes lots of issues.
Sorin, I see most of your repair videos are about power transistors break open. But I have a Toshiba Satellite P105 with Intel Core 2 Duo T5500 running Windows XP (I bought it in 2006 new) has no power a week ago. I checked the AC adapter to be okay with 15.6V output. I checked the power jack connections on the motherboard to no voltage at all. I then unplugged the power jack from the motherboard and got 15.6V with AC adapter plugged in on the power jack. So my AC adapter is okay and my DC-IN power jack is okay. I then checked the DC-IN connections on the motherboard, the positive input and negative input pins are shorted with 620 Ohms. It's not constant, but swing from 620 Ohms to 10 Ohms back and forth. So how do I go about for this type of power input short? Thanks
Good as always. Thank you Sir!!!
te rog eu sa folosesti in continuare power suplay chestia asta ma atras sa ma uit la videoclipurile tale si in plus daca mai arati in continuare cei care au gresit o sa inteleaga ce au gresit
for those schematics you are asking for:
This is a software for board viewing: boardviewer.net/
and here you can find a lot of schematics for free: sualaptop365.edu.vn/
you just have to register.
Here you have a pdf: kythuatphancung.vn/uploads/download/823c2_Compal_LA-7912P.pdf (but i believe this is an old model, not quite sure)
But you were searching for this: 1.bp.blogspot.com/-81Vsbtv8W6c/VQoGx-fGbrI/AAAAAAAAClA/rrnL9QHRw2Q/s1600/2singglepchanel%2B4736.jpg
And don't feel bad about it, actually i saw that you were more deep into explanation and you did it great, you even replaced a mosfet for us. I appreciate your work and effort, thank you sir
thank you
YEAH!! another successful repair
this specific model laptop i did find there is a possible fix for an issue that mimics the issue with no power seen in this video ..... i had the exact issue where was repairing it for a friend, he then asked me to install a game, so i did..... 7 minutes into testing the game the laptop just turned off, none of the front lights were turning on, it seemed dead, tried everything removing power and the battery but still no life..... started to stripped the keyboard to reveal the CMOS battery, i removed the CMOS battery, i plugged the charger in.... i went to the toilet and came back and the front lights came on, i pressed the power button and it powered on..... i think either i reset bios or i rained all remaining power from the laptop..... hope this helps someone as well with these crappy Toshiba c660 laptops and their not powering up issue..
Do I have to go to the toilet.?
I think you forget to play on your mic cause there is a lot of noise in the background of this video
Will you please check out sound in the next video
Thanks
no power satellite r845-s80 ???? can u help ? when plugged in get an amber light blinking
I really appreciate this alot thank for the videos
nice video like all the time just dont be sorry ..........
God job, a lot of time wasted searching a mosfet, maybe you can buy 20 N and 20 P and have as spare, the characteristics are very simillar.
u r right
No need to be sorry, good video still but the band playing outside your shop!!
Lets do a video on you plasma tv repair, and see how that's go, even if you can't fix it still.... will be good to video.
Cheers
i will try
i love no cut videos
nice lessons for me thenkyou great video
good job my good brother thanx
Nie and addicted videos.. :)) good job..
i have a question if you can help me..
I have a Toshiba Satellite c670d and the problem is when push power button i see only green led that is on ...no fan sound no hdd sound thats working,....nothing ..and display is black....only if i push cdrom i can open it ....but laptop wont power up...
And thank you for video with Dell Latitude i succesfully repired motherboard )))
Thank you sir.try is best
Please help me..
I have a Samsung chromebook it's not charging and not turning on..
nice job sir
Hi, i have Toshiba nb520, the problem is :
1. If i plug the charger, there Is no power light, but if i press power button, laptop Is coming up normally, display appears, but the battery icon isn't charging (the battery Is good conditions).
2. If i take off the battery, and i plugin the charger, there Is no power light, when i press the power button, laptop can start Up normally, display appears, and then when i try to put back the battery durring that condition, i got the power light and charging icon on Windows.
Please, do you kindly tell me, what the problem and how i fix it,
Thankyou very much...
My problem is that it reads the charger and even the open lights but no lights on keyboard or screen tried you other technique about wire of screen didnt work
again Nice video plz upload some no display issue videos
please check , i have a lot
Amazing job you're doing here, I constantly watch you videos, and I'm so generous for your knowledge, please open a patreon and I will donate to you, because you make a difference in repair industry.
EDIT:
Please make a video on finding short on motherboard in deaph.
.. : ) thanks for a great lesson..
thenks for your video
Hello sir. Thank you
At 23:40 you test a p-channel mosfet for short. You say that you have used your bench power supply. Can you explain the test you did ? The (-) of the power supply is applied to GND but where did you connect (+) ? How this test works ?
one question, the current hi s path is from conetor to mosfets next were to
pls i will like to know what could cause a laptop fan to start and stop which den later leads to overheating and shortdown of the laptop. my sony vaio does and my fujitsu also
good job
Such a great video! Thanks.. I am a newbie and I would like you to suggest me which of your videos can be a good starting point towards laptop fixing. Thanks very much and keep up the good work!
Pls I have a HP envy 17 when I power it on it comes on and the caps lock blinks a white light 4 times then goes off. So I pull out a ram actually I tested both ram separately. One of the ram when inserted just blinks once and power off repeatedly.the other one blinks 4 times and powers off also repeatedly.pls how can I do this
What's the functions MCH