Lenovo thinkpad t450s - Screen backlight repair, a pretty damn genuine fault 

Technician: You have to replace the fuse! That's not a real fuse, and the real fuse does not looks like that! Sorin: No, this is proper calibrated fuse. We will go by the book. This is how the fuse looks like •~•

When you started to put in that wire instead of a fuse, I was horrified - until you made it into a proper 'S' shape, THEN I knew it was a proper calibrated fuse. can't believe!

Forget dodgy its all about getting the job done. Sorin keeps it very real unlike the rest

26:42 info for beginners: if you connect two capacitors like on the video (in series), then you double the voltage tolerance (the capacitors must be the same) but you lower the capacity. And if you connect them side by side (in parallel), then you double the capacity but the voltage stays the same if the capacitors are the same - if not, then the voltage drops to the weaker one. Keep in mind that these smd capacitors don't have polarity (+/-), so here the orientation is not important.

A copper fuse. Sorin: A genuine comedian. I hope you gauged the fuse properly!

This is the only repair channel that I go straight to the like button before I even started watching the video.

It's been a while since the proper calibrated fuse come into action.

I couldn't resist to watch this video when I saw 'dodgy repair' on the thumbnail :D

Lenova would say it needs a new motherboard and charge $500 without even testing it. You actually repaired it using skill and knowledge

20:18 Sorin is going to replace shorted capacitor! LOL 😯 😍 btw: He didn't tell you, but that capacitor is important also, to prevent backlight flickering. If you don't replace it, then the light will pulsate/flicker and your eyes will be tired quickly 😵

excellent job Sorin , i always lough when you said a proper calibrated fuse

save lot of money of this customer good job sorin i like you work

"Ah you cant see, sorry" -Sorin 😆

Among the best electronic repair channels good explanation good images

One of the laptops i repaired about a year ago, has a cartrige fuse glued to the case soldered with wires to the motherboard. I was scared to leave it without the fuse but i needed the laptop up as soon as possible. Not sure why I thought that was a better idea than just shorting it with a thin wire but to my knowledge, the laptop is still in use.

Sorin, you should be a magician😊

beautiful job I loved the 2 capacitors in series !!!

I had an old model of Philips brand USB stick that didn't work (2 Gb). checking under the microscope I noticed that an inductor on the data line had desoldered. I didn't know where to find the same one, so I rimember that "an inductor is a wire" and tried inserting 2 "proper calibrated wires" and it worked. I was very happy and it's all thanks to you. the best teacher in the world

No,no, nothing dogie here, this is a real poetry! :) :)

lov ur smile sorin, wish i can meet u

I thought he had no way out, he had to replace it with the same one...however, he always comes up with something! 😂

Job well done Master Sorin

Before i throw away a broken display i remove the board and keep it for spares. There are fuses, caps and etc. I have abound 50 board ( edp, LED, CCFL )

You can buy a selection box of new different value and voltage caps so you will always have some brand new ones when needed. I know from experience it is not easy to keep a stock of everything you may possibly need in the future but it is easy to keep the most common ones. Having the correct value replacement fuses is also very handy 73s Sorin

Fantastic, excellent, well done screen repair job...this is one that I will take note of...keep up the great work Sorin

100% the job is done Mr Sorin

Awesome job Sorin! Love your videos, I could watch them all day long. Thanks for sharing your knowledge!

Hola Sorin, un gran trabajo y genialidad como siempre.

" This is a nice Laptop" :) I need it on a T-Shirt :)

Salutare, felicitări pt rezolvare!! Foarte tare

Hi "hot glueMan" you can save just de board of the faulty screens, they are small and you can have meny of them, i learn a lot of your work thanks man YOU ROCK!

Hi Sorin, the capacitors came back to hunt you for not replacing the easy ones hahahahahaha! Storing screens is a thing now, lol ^.^

Magnifique, beau travail 🙂

The display became brighter after two caps 😆, great video as usual. Proper calibrated fuse, but hot glue was missing!

I really like this kind of maintenance video, full of maintenance knowledge, please continue to pay attention! !

Congratulations, you are the best.

matter of "properly calibrated fuse" :) Great as always...

Sorin please make a beginner lesson for lcd screen. Really cool to learn it

you are a "facking" genius Sorin! I really love the way you are going into any repair you're doing. In this specific job, i really laugh alot, yea, and not in a bad way. Job well done.

I had shorted ceramic caps at screens too. Even on non portable models this can happan

Сорин, ваши видео очень веселые (для тех кто в теме) и познавательные! Спасибо за вашу искренность в видео, это весело

Amazing¡¡¡ Sorin , I love electronics when I see you doing things like that¡¡¡ Thank you to share wity us these videos¡¡¡

Ouer teacher Sorin. Your are the best 🎉🎉

That must of been a slow blo calibrated fuse you used ;). No solder bridge between the 2 ends of the caps to ensure no separation occurs.

Excellent work. Congratulations sorin

In the next video Sorin shows us how to repair a ribbon cable using Stringy Liquorice .

Good Morning Sorin, Thanks for uploading new videos in row that helps a lot to improve our knowledge...

Saving a screen from the e-waste is always a +, not to mention saving money for the customer and we also learn by watching your video. By the way, can a capacitor be OK with 30 Ohms resistance normally?

Patter is brilliant

morning Sorin, it's been a while since i had to do a repair on a Lenovo, love them thinkpads, much better to work on than Apple boards

You just applying electronics!😊

Well done!

Well done will work for a long time. Motorcycle 🏍️ in my view is very nice to have in summer but safety is always an issue especially in winter.

there's one thing i've understand that sometimes if you wanna diagnose some faults and try to use exact information from the book (Theory) you'll not do the job coz at the end if you can't find the exact part you leave the laptop unfixed, or ending up charging customers more for the thing that could have been fixed. sometime To people like me when it comes to theory am dumb and a slow leaner but when it comes to practical I easily catch up. However, theory its needed 100%

Just extra ordinary Today's electronic Albert Einstein

Hi, you can make a tiny soldering iron from this capacitor. Is a special capacitor don't throw it away......:)))

The best teacher❤❤❤

NEVER CALL the Proper calibrated fuse + Proper serialed capacitors DODGY EVER !

yes, in series capacitor voltage is double but capaticance is 1/2 , bit it is ok for that job

Proper nice repair!!!!

Respect, good job!

Youre a Master Sorin!! well done

I always keep the boards from the screens, TV or monitor. They can be cut in two (because they are long) and kept in one box, the rest will be recycled.

Very Good Job Sorin ! it is said there more than one way to skin a cat !

You're a proper wind up merchant with the fuses and capacitor, but I'm not going to bite, this time. The worst that can happen in this case is another component inline with the fuse will burn up, but no major risk as it should be current limited. LOL. 😀 Great fix, I like it when no components have to be bought.

in "Extreme Cases" when the dispaly cable is shorted 😂😂

Really it's good i like your utmost skills thanks for sharing

Thanks a lot

23:09 As a layman, I would have said Sorin make a "proper calibrated capacitor", but nooo, its a wrong idea. 😌😀

So I thought ya'll might tie the two caps together in the middle. Sorin must have seen them connected where we couldn't through the camera.

So the fuse can blow if you don't disable the battery or remove them before disconnecting the display cable. This is a common issue when you insert the cable slightly angled and it shorts it

Perfect thanks

if you series a capacitor, you need to paralled a resistor on each capacitors in the series . This is to ensure the voltage drop across capacitors are the same.

Amazing video

Hey do as i do... Whenever i replace a broken screen, i keep only the board. Dont know, must be a habbit left from the CCFL era!

awesome repair

.....very ...dodgy....2 capacitors in series and a proper calibrated fuse....🤣🤣🤣...great vid....

Work of art!

Very well done!

When a backlight is too low, usually 386 and 486, you can find a component to make it stronger, that is the fuse. In new laptops, when you buy a new battery, the backlight will become stronger. For older batteries, if you refresh it in bios, the backlight will switch to maximum. It is dangerous to refresh old batteries in bios, it may not charge again. The best way, is to start the bios for time limits, instead of full discharging. After a while, old battery may accept full discharge in bios.

Good job 👌 nice work experience

nice job

Great idea. Job done.

great video.

very good thank you

Sorin in this video: here we cannot be dodgy but i will do my best to be 😂😂😂

Fantastic job 🎉

With a similar screen issue, I used the method as a desktop screen plugged in both as test to operation and where to troubleshoot fault. And I had time so ordered entire new screen (with the small board). I fully understand the capacitor as repair to series to gain the needed pathway as above peak demand. But I did not truly understand the fail as caused the fault. Was it a small water damage? Let me be clear. I only repair as to a hobby, as to repair anything to my bench with no care for service as fast to customer. Here as I am constant to curious as "Why it failed, what part...and in general ...how to test". My intention is to return to working order, and where a key is any unit can fail at any time for a list of reasons. And this unit also, with 2 each battery? I am fine with such fuse as clearly, it was failed before. But was that fuse fail as water damage. At this repair, I simply had a hard time to understand (cause of fail). But, I so like learning and observing. I hope at near future post you will mention the single board panda. Small footprint, mounting plate as heat sink and various config input -output ports. Why? Because I thought it might good to test power needs and how to cause a screen (monitor) connection. Thank you for all your instruction where I learn and enjoy. From Washington State. US M.

Proper calibrated fuse

I always keep the boards not the broken screens and label them from which model

Great work... If it works, its not a cowboy job!

Good job.. as usual 😊

sorin, ure my propper tested fuse :) .. doit never ending :)

Serie Ce=1/c1+1/c2 Paralel Ce=c1+c2 Explică-ne sir Sorin, de ce ai pus condensatoarele în serie și nu în paralel? Să mai învățăm și noi ceva... Good job! ❤

The laptop is nicer because it's a Thinkpad series. You know, former IBM ThinkPads. They were always higher quality and even now with Lenovo they are nicer, better built and more durable.

Hello,good job

We can use poly cap some of thm have 40 v to 50v

Of course it s well done a job

The Lenovo T450s is better than i thought it would be, but i still prefer the more robust and faster T430 series.

Eu aș fi măsurat cele două condensatoare ca să fiu sigur că au aceeași capacitate și același curent de scurgere, altfel tensiunea se va distribui inegal între cele două condensatoare și e posibil ca unul din ele să fie suprasolicitat și să intre în scurtcircuit, după care toată tensiunea o să cadă pe celălalt și se arde și ăla.