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

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[@thankyou7741]

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 •~•

[@AntiMat.97]

27:46 is perfect answer 😀

[@weerobot]

Sorin Fuses are The Best..

[@xDaRkModEx]

I was dying with that 🤣🤣🤣"proper fuse, you know like the book" 🤣🤣🤣🤣🤣

[@PCEYTube]

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

[@jayarcameron4207]

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

[@Radek__]

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.

[@SerenoOunce]

To have ~the same capacitance w/ necessary V you'd need *4* caps in both parallel and series, cramming in the largest package size you can fit. Or bodging in a ceramic disk type would be another option if no SMD available.

[@basshuntet6128]

is it the same for resistor?

[@Radek__]

@@basshuntet6128 almost the same - the different is that you don't boder about the resistors voltage but about the current tolerance (power dissipation) which that resitors must handle. ... if you connect two resistors 5ohm in series you have 5+5=10ohm. if those two resistors can handle 3wats, then both in series also handle 3wats. If one is 1wat, secnond is 3wats, then if you conetct them in series, the tolerance dorps to the weakest one = 1wat. ... if you connect two resitors 5ohm in pararell then you lower the resistance = it will be 2,5ohm (for more than two resistors you have to use a matematic calculations) and the Power Dissipation (current tolerance) will be greather. If the resistors have the same power disspiation 1wats per each, then you will get 1+1 =2wats.

[@walterwhite9094]

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!

[@carlosgarciaoropeza5480]

@Walter White: Even the authors of "classic" technical books (electricity & electronics) would be amazed if they saw this (in the depths of their interior, of course). All the best.

[@No-nickname]

😂

[@lovejoymakhaza5229]

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

[@leetucker9938]

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

[@Radek__]

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 😵

[@KeiLin11]

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

[@PCEYTube]

"Ah you cant see, sorry" -Sorin 😆

[@Dr.muthanna]

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

[@Oak690]

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

[@shastrichandoo817]

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

[@2368rafa]

Hola Sorin, un gran trabajo y genialidad como siempre.

[@StefanSolomonsz]

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

[@filenotfound__3871]

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.

[@dolfink2799]

Excellent work. Congratulations sorin

[@renbek100]

Magnifique, beau travail 🙂

[@LaptopDisassembly]

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 )

[@davidarias4127]

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

[@thomasunsworth425]

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

[@giovannimarino4464]

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

[@venerandarain3]

they just got married 😅

[@chinaphonefixteam6300]

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

[@user-ob6gq1uu5j]

Among the best electronic repair channels good explanation good images

[@pantvas6970]

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

[@markmorris6246]

Job well done Master Sorin

[@ytdarsch84]

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

[@jonydarksy2600]

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

[@bozgaandrei3661]

Salutare, felicitări pt rezolvare!! Foarte tare

[@italianofx]

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

[@Kalma-cn]

hahahhah we need moree

[@davidsenica8175]

Sorin, you should be a magician😊

[@MrVenom128]

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!

[@frankmormando3917]

Very well done!

[@Z_Unlocks]

Youre a Master Sorin!! well done

[@ootyguy9805]

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

[@mm0077]

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.

[@tonyrgnash]

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

[@crumplezone1]

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

[@mikanikolic1976]

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

[@eliasbourozrrrs8585]

Congratulations, you are the best.

[@user-kw5lh7cm2p]

Great idea. Job done.

[@tomaszski9818]

Respect, good job!

[@christospashalis6684]

The best teacher❤❤❤

[@greatdrd]

Fantastic job 🎉

[@bogdanbenett1229]

Work of art!

[@RahulKumar-sq3sc]

Good job 👌 nice work experience

[@pajdko8382]

100% the job is done Mr Sorin

[@ravindraadapa2952]

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

[@leetucker9938]

awesome repair

[@patzik1910]

Proper nice repair!!!!

[@eldjoesther643]

Ouer teacher Sorin. Your are the best 🎉🎉

[@DADEMANA]

lov ur smile sorin, wish i can meet u

[@davidanderson2436]

Well done!

[@emmanuelacquah4059]

Thanks a lot

[@Mecano.r]

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

[@mustaphahammad1196]

Amazing video

[@nathvanvolsom5213]

Good job.. as usual 😊

[@ljubopobric5385]

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

[@tvelektron]

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

[@ChrisPavlides]

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.

[@icommandoi145]

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?

[@yoyomismo2052]

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.

[@michaelgay562]

great video.

[@lovejoymakhaza5229]

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%

[@ant_Z]

nice job

[@asgharmoradi7309]

very good thank you

[@HnsxToP]

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

[@kimatong1166]

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.

[@basshuntet6128]

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

[@caprairinucai]

Thank you :)

[@mshone1972]

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

[@jimmius2]

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

[@laerticomputers]

Hello,good job

[@yakupeski9978]

Perfect

[@nikoskosmas51]

You just applying electronics!😊

[@radio-ged4626]

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.

[@Popeyes66]

Sweet !

[@user-jw7mk6pc2i]

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

[@jozsiolah1435]

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.

[@yomrano]

Bravo 👍🏻

[@GregM]

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.

[@alangordon6461]

Patter is brilliant

[@alexaderias3652]

just wow!!

[@ciprianpeica85]

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

[@Popeyes66]

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

[@westsenkovec]

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.

[@carlosgarciaoropeza5480]

@ West Senkovec: Yes West. Totally agree: "Lenovo's route (trajectory) as a company was well planned. Leaving politics aside, he moved his headquarters to Hong Kong (first right decision) and bought IBM (second reason for his success)… we are living what followed, if them does not cross the limits, that is, without making the mistake of Huawei"… Another way of saying it, "it has everything to compete in the big leagues and both the apple giant and the two Korean colossi know it" (excerpt from an article in an American business magazine). PS: I liked the Lenovo Thinkpad even though only one has arrived for service but I filmed the entire disassembly with a portable camcorder and made a lot of notes in my blog. I am more familiar with other manufacturers. All the best.

[@radminas2739]

I still using IBM Thinkpad R50e from 2005.

[@nischalkumar6671]

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

[@glenfiddich7635]

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!

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

[@gregfisher216]

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

[@jan-johannes-bosman]

Cool man, just cool!😁🇿🇦

[@Pirelli.]

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

[@jaym5938]

Proper calibrated fuse: are there 'different wire types' for capacities, or you use the same wire for all fuse jobs? Thanks

[@ryanjordan2835]

Hi Sorin, in this video, how did you display the voltage from the charger itself? Is there laptop charger leads that you can get for a dc power supply?

[@PaulHigginbothamSr]

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.

[@mcgama88]

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.

[@meherhjb7170]

Of course it s well done a job

[@spielautomat9751]

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

[@malikg4u]

Just extra ordinary Today's electronic Albert Einstein

[@KellySimonsson]

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

[@waynesallee-com]

That's probably what happened, since the laptop owner recently replaced the screen.