This is why I love Sorin. He reads the comments and manages to rework a repair job the very next day, respect.. Great work as always! Oh and TIL about back-cover detecting switches.
Smashing repair, that's a propper bodge ha ha :-D The transistor is safe as the maximum collector/emitter current is restricted by the pull up resistor. Just in case anyone was worried about it.
@@adaniel69 Yes he did, but i thought about the possibility of the button becoming a lower resistance when he did the first mod.. The current through the transistor via the base is limited by the super io pull up resistor. (the only source of power). Dont forget that transistors have gain, its not just a switch. I wasn't going to suggest something i had not thought out. I really like sorin, i wanted him to succeed :-D
Transistor is safe...the 3.3V power supply that is powering the SuperIO chip is delivering maximum 100mA-a current that most of small power transistors can handle..
With cover switch pressed, you have Transistor operation. Without cover switch pressed, you have S.C.R. operation. With Sorin, you have Triac operation. Well done Sir, i enjoyed your repair video
This is bit unusual. I would expect a resistor on the collector and base, but not on the emitter. This is not the ideal way to use a transistor as switch. But, hey . it works.
Master Sorin, can you explain the schematic of the transistor on the 3v line more detail, I didn't quite understand how it managed to make it work. Tahnk you.
Learn how pnp transistor works as a switch: in short having 0V on the base will turn it on, meaning collector-emitter path will become low resistance and bring superIO pin down to about 0.6V (is by default pulled up to 3.3V via the 100k internal pullup resistor)
Love your smart thinking quick repairs. As this is was just one key, and likely had something spilt down it causing this issue, really puzzled why you didn't remove everything but keyboard from laptop then try (a) IPA down button to see if that fixed it, and/or (b) water followed by hot air in case a sugar drink, milk, etc. being the cause (as this won't dissolve in alcohol). Love watching all your repairs.
You should clean the flux, always. In that case it is a low voltage track, but I have seen things blow up with higher voltages due to the flux. Although flux should not be conductive, it may have some conductivity, especially if it is cheap.
In this case i might just put a separate tact switch hidden somewhere in the side of the laptop. A separate switch is more reliable and fast repair. Tact switch also cost less than a transistor.
What if on the part 1, what if u just make a switch button other than that of the keyboard button. You i was amazed by the jumper u made and make it switch on. Well for me that doesn't have the equipment i will just make another switch.
This is not a dodgy repair.. For who knows is the application of the Electronics Theory. Sorin is doing a lot of dodgy repairs, but this one is kind of nice. To use a transistor as a switch to short 3.3V to GND is a nice idea and costs only a penny in parts.
Awesome work Sorin!! What happens if the button corrodes to the point it no longer switches? Should you put some deoxite into the button cavity as well? Thank you for your awesome videos
Nice and propper :) (but, I like the non-proper Sorin for most 99,9% time :))) Just hope, the PD resistor wi ll be OK ;)PS. Even te first one fix was fine. ;) Respect for getting to Job just, to straight the thing! Real Master of the Job! - Thanks for this one - The Class! :)
Haha, I just spent the better part of a day changing the cmos battery in an old laptop that Ill be lucky to sell for $100. but after a day and a halfs work, I have a laptop that works almost as good as new.
i am a little confused, the first time you put the transistor on the board at min 8:23 the flat side was down (collector on ground). the second time you put the transistor on the board (after cutting emitter) you can read which transistor it is (flat side up), you then soldered emitter to ground. btw Base was never soldered to the board. and it works?
Someone has there thinking🤔 cap🧢 on this morning? Must of been strong coffee☕️. But this is what we want to see.. Lasting repairs, Nice because buying & then changing the keyboard than a 5p transistor…
SORIN I had in my mind yesterday about poring couple of petrol drops on power button....could have lubricate and clean the contacts....and then use HOT GLUE to fix the power button Just on lighter note...😉😉
Transistors from home... Come on... Your workplace should give you an SMD resistor assortment book. Such would have already paid itself back from the time you would have spared on searching resistors for this job. Coils and mosfets you can harvest from boards. But not resistors. It's not worth your time. And capacitors you never replace so you won't need them. Just, some resistors, some basic transistors.. You deserve that. The fix: excellent. But was it needed? I don't remember if you did a quick visual on the keyboard, cable and connector. Maybe it could be fixed with just a bit of cleaning.
Hello, I hope someone will be kind enough to explain how this works. Since switch is faulty, it can be represented asa series connection of ideal switch and a resistor. When power button is not prressed, the base of the transistor is floating. When it is pressed, the base is via this internal resistor connected to the ground. This means Ube
adaniel is right. BJT transistor is "current device". Base current must flow to make CE current flow (which is much higher than the base current). Mosfet on the other hand is "voltage device" you need low voltage on p-mosfet gate to turn it on so often you would need pull up resistor on the gate to "reset it" into non-conducting state when button is not pressed.
Did you even try to clean the power button? A liberal application of IPA or contact cleaner could of avoided this whole process. Thru both of these video's didn't even see you try.
Hello Sorin, I know you are running a business and busy most of the time. But I appreciate if you answer my email that I sent a week ago for a possible gaming laptop fix. Thanks for your educational and inspirational videos.
![Lil Uzi Vert - We Good [Official Audio]](http://i.ytimg.com/vi/DrSfBULAsek/mqdefault.jpg)
This is a strong reason why I like Sorin's videos. he reads the comments and pays attention with humility. Her personality is enchanting. Thank you
Sorin is a great master and takes into account mutual communication. This makes him even greater and worthy of all respect
This is why I love Sorin. He reads the comments and manages to rework a repair job the very next day, respect.. Great work as always!
Oh and TIL about back-cover detecting switches.
Smashing repair, that's a propper bodge ha ha :-D
The transistor is safe as the maximum collector/emitter current is restricted by the pull up resistor.
Just in case anyone was worried about it.
Sorin did think about the problem that i was saying when the resistance of the power buton will change!
@@adaniel69 Yes he did, but i thought about the possibility of the button becoming a lower resistance when he did the first mod..
The current through the transistor via the base is limited by the super io pull up resistor. (the only source of power).
Dont forget that transistors have gain, its not just a switch.
I wasn't going to suggest something i had not thought out.
I really like sorin, i wanted him to succeed :-D
Transistor is safe...the 3.3V power supply that is powering the SuperIO chip is delivering maximum 100mA-a current that most of small power transistors can handle..
Now this is a proper dodgy repair! Keep them coming!!!
Much better repair.
Glad you revisited that laptop.
Sorin, you are such a nice person to work with. And so clever. I love your style mate!
Watched both these videos like an action movie. 😃 I love it when you teach us ingenuity. 👌
I'm shouting at the screen "i can't see the schematic".
Brilliant set of videos, can't believe how thoses resistors fly. Thanks Sorin.
This was really high learning video. Thank you Sorin. You are such a great man!
i like that, why throw away and waste when this approach works fine...SUBBED
With cover switch pressed, you have Transistor operation. Without cover switch pressed, you have S.C.R. operation. With Sorin, you have Triac operation. Well done Sir, i enjoyed your repair video
This is bit unusual. I would expect a resistor on the collector and base, but not on the emitter. This is not the ideal way to use a transistor as switch. But, hey . it works.
Wow, Nice learning 🙏
Master Sorin, can you explain the schematic of the transistor on the 3v line more detail, I didn't quite understand how it managed to make it work. Tahnk you.
Learn how pnp transistor works as a switch: in short having 0V on the base will turn it on, meaning collector-emitter path will become low resistance and bring superIO pin down to about 0.6V (is by default pulled up to 3.3V via the 100k internal pullup resistor)
Mr. Sorin pls try and explain the new schematic with the old one
Thank you sorin❤️❤️❤️
Love your smart thinking quick repairs. As this is was just one key, and likely had something spilt down it causing this issue, really puzzled why you didn't remove everything but keyboard from laptop then try (a) IPA down button to see if that fixed it, and/or (b) water followed by hot air in case a sugar drink, milk, etc. being the cause (as this won't dissolve in alcohol). Love watching all your repairs.
You should clean the flux, always. In that case it is a low voltage track, but I have seen things blow up with higher voltages due to the flux. Although flux should not be conductive, it may have some conductivity, especially if it is cheap.
Nice Sorin...To hurt the trolls I would have used a small voltage vacuum tube..Just for fun with the trolls.
nice approach
Glad you fixed it less dodgy, LOL...Leo
In this case i might just put a separate tact switch hidden somewhere in the side of the laptop. A separate switch is more reliable and fast repair. Tact switch also cost less than a transistor.
Very innovative fix.👍
Youre my Idol sir Sorin. How i wish i can be your apprentice.
Imagine yourself an Acer 5000 with a vacuum tube.. it would be something..
What if on the part 1, what if u just make a switch button other than that of the keyboard button. You i was amazed by the jumper u made and make it switch on. Well for me that doesn't have the equipment i will just make another switch.
That button is not for back cover detection, its for battery disconnect, for frozen I.O.
Faith restored !
This is not a dodgy repair.. For who knows is the application of the Electronics Theory. Sorin is doing a lot of dodgy repairs, but this one is kind of nice. To use a transistor as a switch to short 3.3V to GND is a nice idea and costs only a penny in parts.
Awesome work Sorin!!
What happens if the button corrodes to the point it no longer switches? Should you put some deoxite into the button cavity as well? Thank you for your awesome videos
Perfect,nice job!
Back cover switch ? Nice one.
Nice and propper :) (but, I like the non-proper Sorin for most 99,9% time :))) Just hope, the PD resistor wi
ll be OK ;)PS. Even te first one fix was fine. ;) Respect for getting to Job just, to straight the thing! Real Master of the Job! - Thanks for this one - The Class! :)
How about, if use a diode instead of the transistor? It's clear and simpler ?
Great job normally you do doggie and now you did good to do it professional . Like that . So you did with a little help from the viewer
Sorin, can you please pay atention of picture position when you are using microscope..... most time we can not see anything... thank you
Haha, I just spent the better part of a day changing the cmos battery in an old laptop that Ill be lucky to sell for $100. but after a day and a halfs work, I have a laptop that works almost as good as new.
Sorin my friend. How many sticks of Hot Glue do you use in a year?
At least it is cheap
nice mate...
i am a little confused, the first time you put the transistor on the board at min 8:23 the flat side was down (collector on ground). the second time you put the transistor on the board (after cutting emitter) you can read which transistor it is (flat side up), you then soldered emitter to ground. btw Base was never soldered to the board. and it works?
base was soldered. You need to look closer ;)
Someone has there thinking🤔
cap🧢 on this morning?
Must of been strong coffee☕️.
But this is what we want to see.. Lasting repairs, Nice because buying & then changing the keyboard than a 5p transistor…
Nice job more knowledge sir
Thank u.
Resistor game starts ❤❤❤😍
Better than factory…
Is an upgrade 🤣🤣🤣
wow you are a legend
you are the best 👍👍👍👍
Love it
SORIN I had in my mind yesterday about poring couple of petrol drops on power button....could have lubricate and clean the contacts....and then use HOT GLUE to fix the power button
Just on lighter note...😉😉
Wow Sat Work Cool...
Amazing
Transistors from home... Come on... Your workplace should give you an SMD resistor assortment book. Such would have already paid itself back from the time you would have spared on searching resistors for this job. Coils and mosfets you can harvest from boards. But not resistors. It's not worth your time. And capacitors you never replace so you won't need them. Just, some resistors, some basic transistors.. You deserve that.
The fix: excellent. But was it needed? I don't remember if you did a quick visual on the keyboard, cable and connector. Maybe it could be fixed with just a bit of cleaning.
Hello, I hope someone will be kind enough to explain how this works. Since switch is faulty, it can be represented asa series connection of ideal switch and a resistor. When power button is not prressed, the base of the transistor is floating. When it is pressed, the base is via this internal resistor connected to the ground. This means Ube
This is bipolar transistor! Not mosfet! When base is connected to nothing(air🤣), the transistor stop conducting between collector and emitor!
adaniel is right. BJT transistor is "current device". Base current must flow to make CE current flow (which is much higher than the base current). Mosfet on the other hand is "voltage device" you need low voltage on p-mosfet gate to turn it on so often you would need pull up resistor on the gate to "reset it" into non-conducting state when button is not pressed.
Do your customers ever see these video's of their product being repaired?
They will not come back....🤣🤣🤣🤣🤣🤣🤣🤣
@@Alex-mj7km we must admit Sorin is a genius with a solid technical knowledge....he gets things done with quite limited resources in unorthodox way...
👍😀👍
cleaning the power buttom by petrol is more confident then this philosophy of devil
THIS Is dodgy happy ending repair, wow this is unbelievable
obviously the first repair was not good: any good repair requires hot glue!
Good point! :D
Did you even try to clean the power button? A liberal application of IPA or contact cleaner could of avoided this whole process. Thru both of these video's didn't even see you try.
Thanks to thinking about poor country's ure so!generous
If your going to be dodgy Sorin at least use a SMD PNP transistor, there's plenty to pick from...does what you did work yes work, professional NO!
Another dodgy critic.
Watch from far away! It will be tiny! 🤣🤣🤣
I think that the customer has a bade ram memory because the first time it turned on without picture and there is a 1 ram memory
Hello Sorin, I know you are running a business and busy most of the time. But I appreciate if you answer my email that I sent a week ago for a possible gaming laptop fix.
Thanks for your educational and inspirational videos.
you have a link for discord group below the video for help