Dell charging sign ON but NOT charging - Dell laptop not detecting the charger repair solution

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[@orion310591RS]

Dear Diode, welcome to the family. No diode? No faulty diode.

[@jcb208]

Is that now no diode no more protection

[@orion310591RS]

@@jcb208 Correct, no more protection, its Zener diode. 19:48 Marking is ".8" and part number is "BZX584C4V3-V-G". You can find schematics by that. Just one thing that Sorin almost never do, and its beneficial to really show, is to measure faulty part outside of circuit. Jokes aside, it will be pure example how faulty component looks like when measured with component tester outside of circuit. For single component there is always multiple parameters, with component tester we may see what is problem... For example if you measure diode in diode mode, you may get good reading with multimeter, but if you use component tester, then you can see it has large leakage current. Or ESR on capacictor... ESR is different from capacity, but they are both on capacitor. 20:36 - Diode is still in circuit and according to zener diode usage, there is always something in parallel, so resistance shown is not the one from diode.

[@silviuguseila2552]

​@@orion310591RSyeah, Sorij should test components after removing them, and should use more often oscilloscope, component testers and so on. It would bring more audience to his videos. A new layer of info that we want to watch

[@charanebot6423]

@@orion310591RS Please what component tester do you recommend getting?

[@dejanmilosevic900]

If there is no Sorin than he schould be invented! You are very unselfish man, sharing all that huge knowledge that you have. And even on an interesting way. A big thank you from Serbia!

[@smilemore209]

Thank you Sorin for all the help you put out there for free, God bless you.

[@knightwar3]

It would be much harder to identify the faulty diode without thermal camera nice job

[@needlethread4715]

do you also watch Northridge Fix? :)

[@knightwar3]

@@needlethread4715 Yes i do watch nf too

[@charanebot6423]

Exactly my thought. If not much harder almost impossible!.

[@parplus2556]

For older Dell Latitude E-series laptops with this issue (from E6400 Core duo to E7470 Gen 7 CPU), the easy way is to purchase an old cheap PRO3X E-dock online (along with a 90W adapter if you do not already have one). The docking station bypasses the AC jack on the laptop. My 2 bad E7250 and E7450 now both charge and run faster. BIOS also indicates correct adapter wattage. The newer Latitude laptops from 7480 and up use a USB-c docking station (130W adapter required). I have not had a charging problem with a 7480 but I presume the dock may work as well.

[@jacovanzijl8904]

this dont work....i tried that 2 months ago, actually completly killed my battery, i have to now remove my battery to use the laptop....i also thought if i use the dock it will bypass the 1wire ic heck but it doesnt, it still wants the oem charger

[@parplus2556]

@@jacovanzijl8904 I guess I am lucky that the E-dock worked for both of my laptops with this problem. I always use OEM chargers that are confirmed good in other Dell laptops to eliminate the charger as a cause.

[@danarepouille1381]

@electronicsrepairschool Removing a shorted TVS diode from the PS_ID line is a common fix for this issue. The 3.3V is used to communicate a data stream between the EC and the charger within a second of connecting the charger tip to the power jack. You can see that data stream blast if you have your oscilloscope connected to PS_ID when you connect the charger tip to the jack. There are other components in the PS_ID circuit that commonly fail. However, the TVS diode is the most common culprit.

[@daw7563]

Dell use a onewire chip to identify the charger, it could also result in a clock down of the CPU on some models, if it recognizes that you use wrong/non-Dell charger (there is a software to get around that), and there are hacks out there to trick the Dell laptop that it is connected to the right charger. For many years Dell has had some shady business around battery warranty, quality and chargers, trying to upsell "long life" batteries that did not work much better. Due to the many battery quality issues and quirks around charging we have abandoned Dell laptops at my workplace, it costs to much to handle and results in loss of productivity for end users = loss of money.

[@n7565j]

How right you are!!! Can't tell you how many times we've cussed Dell for their charger foolishness!!! Even if you use a charger with more amps than is required, (but is a non Dell charger) Dell REDUCES the cpu output & won't charge! VERY frustrating, and NOT customer friendly at all!!!!!!!

[@dimitrismaster]

what is the software you mention?

[@daw7563]

@@dimitrismaster ThrottleStop - disable BD PROCHOT (if I remember it right). It only helps with the CPU clock, not a no charging issue.

[@englishrupe01]

Best thing you can do is remove Winblows entirely and install Linux....for ANY laptop.

[@daw7563]

@@englishrupe01 might be true but these issues happens outside the OS of choice, so not sure Linux will help much in this case.

[@will_doherty]

Since it appears that you didn't replace the faulty diode, one assumes that if the wrong charger is plugged into the laptop (again, possibly, as that may have been what stressed this diode and caused a partial failure) there will be a much more catastrophic failure? (Edited for a typo).

[@einfelder8262]

Yep. Dodgy repair bypasses design safeguards. Customer should be advised never to use a Dell Dock, or anything other than the small capacity power brick it came with. Then hope the brick does not fail and pump a destructive voltage or current into the laptop.

[@moldeaux]

Ok, but why not replace it actually? Is it hard to find? Expensive? Too much time to order and wait for delivery? Why just remove the protection and risk much worse damage next time than simply ordering and replacing that diode? I really try to understand the reason here, is it just being dodgy and not doing it since it already works without it?

[@stalwartekwere2157]

​@@moldeaux I don't know myself I have seen engineers do this many times... If it works leave it 😂

[@Oak690]

Awesome work Sorin! Thanks for sharing as always. I have learned so much from you over the years.

[@charlesschneiter5159]

Brilliant diagnostics re Charger-ID pin!! Have a DELL laptop with as similar problem. I much appreciate your work!

[@DumahBrazorf]

.8 is a zener diode with 4.3V nominal.

[@jenthodemonie]

This model is our school laptops. Nice video.

[@F3Aer]

Thank you! I'm having some battery / charger issues with my Dell 5520 and this video encourages me to diagnose and -eventually- repair it. Thanks!

[@grzegorzw5042]

You have been lost becasue of the routine! First of all always check in the BIOS if the charger is recognized and its proper acording to model laptop. Second the plug you have used was blue inside. I can only guess that you have used by mistake HP connector. In Dell there is 1wire comunication. You should simply check if there is communication by osciloscope. To be honest I have seen that using HP charger could blow up transil diode.

[@admindsytes]

Dell is using a microcontroller embedded in the charger that is communicating with the motherboard using "one wire" protocol, not voltage levels, for the charger wattage.

[@reversetransistor4129]

Yeah, hard to find, overvorlage zenner diode protection, that, should be replaced

[@mattbentley8958]

Great info, I was wondering why it still worked after the diode was removed.

[@evaldaska6541]

I had the same issue before on dell e7250/e7450 units. You can also go to bios and check power wattage reported, if it does not show wattage then its either the ID pin on the PCB or the charger.

[@parplus2556]

I just posted about my 2 bad E7250 and E7450 (of many units) where I brought out an old PRO3X E-dock yesterday (06/20/24) to finally fix the AC unknown issue. The dock bypasses the AC jack on the laptop. Now both units charge and run faster, and BIOS indicates correct adapter wattage (90W required for the dock to operate). The E-dock is cheap online and should work with all Latitude e-series laptops.

[@emerymanzi9409]

Thank you so much. You deserve a noble price for all the knowledge that you shared 🏆📚

[@rsaj-cq6ne]

Sorin, any chance you can post a schematic of a board with a charging id? even if its not this specific laptop. Thanks for helping customers and sharing. You are the best on youtube and compared to other rude that just fixes shorted caps and mosfets you cover mostly all contents without filters. Great job👍

[@ravindraadapa2952]

Sir this was a new and good video for people like me to gain a knowledge concept of charging id importance on laptops and how to observe the diagnosis the fault and find the right way tq sorin sir

[@juanchizabaleta2405]

Thank you teacher, for the video class, the repair and the tips. Greetings from South America and very good job.

[@Ohms90]

Yes looks like an ESD protection diode that was shorted, good work.

[@retrocomputinggrotto]

Learning all the time 😎 now I know more about the charger ID pin. I think I'm going to have to type up all my notes and pin them up on my notice boards as I'm learning so much I fear becoming like Homer Simpson where at some point I'll have so much new knowledge to remember old info starts to leave my brain!

[@Timpano_Francesco_Repairs]

Hi Sorin thank very much, Never stop learning from you, i have same problem with a customer i sold the Dell two Year ago just out of warranty, but the different is that my laptop d'ont power on, i must remove the battery and put on again then i seem to work fine, i tray your suggesting and leet you know...go on so then i a lots

[@orion310591RS]

OneNote is good solution for notes.... easy to draw schematics, easy to attach files, easy to search, easy overview with sections and pages... It will eventually grow into big database of solutions...

[@toepyaesone6177]

Yes I think PSID is very important in dell laptop.99% percents of plug in not charging error cause because of PSID. Shorted diode and transistor cant switch 3V ldo voltage to ID pin. You can jumper the transistor and solve the problme.

[@ronlevin2339]

No need to replace a diode ?

[@ralphj4012]

Replacing an ESD diode, whatever next? Replacing capacitors?

[@juozask.446]

Not sure why you did not just enter the bios and check if a power supply wattage has been detected correctly, because thats the first thing to check on a not charging Dell laptop. Also, if a supply has not been identified correctly, Dells usually show an error right when you turn the computer on, telling that the charger cant be identified, not sure why you skipped that part, maybe this model did not give such an error or for educational video? :)

[@levendlicht]

This was new to me, thank you for explaining!

[@augustineoghenero3176]

Thanks you for your video it helps me a lot ❤❤❤❤

[@camarasberta9498]

I believe Those diodes are esd protection diodes, i have to remove once in another laptop because it was taking a 3.3 signal down

[@oluwafemifadoyebo1735]

Thanks sorin for the interesting value

[@SApcProSergijAleksovski]

Excellent video Sorin, it will help out so much. Thanks for teaching us electronics! 😀

[@Swenser]

Hi Sorin. You mentioned resetting battery. Has the chap selling these understood yet that people especially hobbyists are prepared to pay money to get the device but not to pay crazy prices. Do you think the device will be available any time soon at reasonable pricing?

[@silviuguseila2552]

Did you talk to him? He did say he will offer you free license if you only do a few batteries a year. Very flexible and reasonable

[@justinspiredfallout]

Thanks for the video Sorin! Another one to add to my notes.

[@saam1761]

it is good lesson always watching your videos is enjoyable

[@xx3868]

It charges without diode, but should it be replaced and what will/could happen if not? Thanks

[@rongray8934]

Thank you for sharing your knowledge.

[@petejackson7976]

P-channel mosfet the gate voltage must be zero if working properly while n- channel mosfet the gate voltage is the vice versa.

[@hartline8655]

Isn't that the Adapter ID rail? That Zenar diode always shorted what a sad.

[@mohammedqutaty]

on dell charger id pin is data (one wire protocol) no voltage like hp

[@JobsonGabriel]

It's workiiiiing. I can't believe

[@worroSfOretsevraH]

Cannot you fool the charger ID pin to charge with your power supply? Thanks.

[@laidman2007]

Well done, Sorin!

[@chullaceja8396]

he is the model of my device. Thank you very much Sorin for sharing the video jaja

[@lovejoymakhaza5229]

SIR how are you. can you please explain what is the channel n mosfets and channel p mosfets thei differences and how they work also about vcore and how to solve a problem with a vcore in the next video please. and also what causes a laptop to turn ON but the processor will be cold

[@addehashi]

sorin you are my idol❣

[@mreb7724]

Dear Sorin, how about a few desktop motherboard videos. Not many of them on KZbin

[@aaronle4897]

When the dc jack worn out, or the plug that will cause it not to charge.

[@KyleSand]

Im having an issue where the laptop won't charge when running (charging light off), but will charge when shut off. Maybe an input mosfet issue?

[@marwanmoussa7221]

You should see in BIOS/UEFI, if it recognizes the charger, on DELL laptops.

[@MethodMan-]

Hi Sorin, which OWON hds version would you recommend? The hds 2102 has 100Mhz with 500Msamples and the cheaper versions have all only 250Msamples/s. Should I buy the 2102 or cheaper versions? Is the s version with signal generator worth it?

[@briantamburelli7573]

Instead of being cheap I would have replaced the 50¢ diode to protect the laptop.

[@cuneytackgoz7363]

very very good job sorin

[@electronicrepairservice2020]

This was a great lesson!! Tricky for sure.🤔 I'm just curious why your power supply wouldn't work vs the laptop power supply?

[@corel965]

In charger is a chip especialy in dell that derminate wats and is is correct charger...also to protect charger it self, and the bench psu only had positive and negative so laptop cannot determinate what type of "charger" is that and wont allow to work...i mean dell have some specific system but in general interesting fault...

[@will_doherty]

Because the proper charger sends a signal/sinks a particular current so that the laptop knows its power capacity and charges the battery/powers the laptop accordingly. When using the bench power supply the ID pin is not connected, so the laptop doesn't charge as it's saving potential issues with itself or the unknown connected power supply...

[@Aneesh.Asokan]

If my knowledge is right, these power pins do come with with integrated stuff to make bench PSU to be identified as correct charger type by Dell, HP laptops & this is SPECIFICALLY HIGHLIGHTED by websites selling these types of adapter pin sets!

[@will_doherty]

@@Aneesh.Asokan You may well be correct, but in this case his set does not appear to do that. Indeed in some cases it would be useful to have one set that does and a second that doesn't.

[@Aneesh.Asokan]

@@will_doherty I think that Sorin jump started that method to diagnose this fault! I have seen many online websites specially mentioning that their adapter pin sets specifically comes with integrated electronics to make Dell, HP laptops to identify bench PSU's as orginal chargers to make it work without this glitch! That's why I felt confused! Yes, Sorin must have used his own methods to diagnose this fault!

[@iTCXtreme]

Owon HDS2202S seems a good all in one meter. 😊👍

[@robertbasovski]

thank you, thank you, thank you 😊

[@MrReeceyburger123]

Awesome man haha, also had a mosfet and resistor faulty on a some dell charger id circuits.

[@christospashalis6684]

Good job Sorin as always. AAA+++. SERRES GREECE

[@DARKNESS19906]

Very nice👍👍👍👍 I've learned a lot. Off this channel ♥️♥️♥️♥️♥️

[@toufikdjemaoui8265]

Good job friend 👏

[@plamartiniere24]

Non of you didn't see the board was not connected to battery an supply how the diode can be hot with out any power

[@rfr653]

Good job mate 👍

[@andrewverran3498]

So in this case diagnosing without a thermal camera may have taken all day?

[@adrianpetrea3353]

Hi Sorin, I have a prblem similar to the one that you fixed in this video, but the thing is my battery don't show in the taskbar in windows, the id pin is 3.3 v but the coils near baterry are 1.6v, it shows me the blinks referred to a faulty battery but it's a new original

[@chumatez]

Nice one

[@einfelder8262]

WTF is wrong with replacing the diode. Dodgy "repairs" can so easily be quality repairs, but no, not here.

[@tripplejelectronics9468]

I'm sorry I have dell xps 15 but i can't find cmos battery. This laptop doesn't display on screen \

[@asdrty258]

That thing is a zener about 20 v

[@FuoFire]

on amazon there are some usbc to barrel adapters with dell/hp/etc pin, do you think that it will work? they are only negotiating the 20v power delivery from the wall charger and i dont know what signal they are sending on the id pin

[@banner09174988541]

Thank you sir...im from Philippines

[@icommandoi145]

awesome video

[@steeven2000]

Va salut domnule Sorin , unde pot cumpăra acest instrument și eu , mulțumesc pentru un eventual răspuns , apreciez fiecare video , mult succes 🙏😊

[@i.sivakumarsk]

My laptop freezes and shows VIDEO TDR FAILURE after 30mins of boot and also Driver power state Failure BSOD when put to sleep and turned on Back. Upon restarting, The Dedicated GPU shows code 43. Upon restarting again the GPU is normal and again after some time it shows Video TDR failure. But the Gpu works fine when stressed. Does this be a GPIO Controller failure?

[@johannbiker8803]

👍👍Du bist der beste👍👍

[@udi112]

This is nuts, wow

[@Ed31003]

i have a Dell Precision 5530 that will not charge any battery but a dell, does it have a issue or because it's Dell?

[@electronicsrepairschool]

Try a bios update, or the copies batteries are just very bad

[@worroSfOretsevraH]

I was always wondering what is the minimum voltage at which the laptop is still charging and working normally? It is probably way lower than 19V.

[@electronicsrepairschool]

kzbin.info/www/bejne/sJXPqaends19jdk

[@stalwartekwere2157]

Why not replace the diode Any one help ?

[@jaaa1976]

very good video..i like study ..but only electronic 😄hallo from green*bay

[@vincesnetterton5868]

Was going for non genuine charger

[@gary-gilbert]

If removing that part made the laptop work. Why did they put the part on the MB anyways? It doesn't seem needed. I've watched many of your videos and you remove a component from a board and magic the device starts working, or you replace the component with a fuse. Why don't these devices come from the factor without these components removed or with proper fuses installed?

[@rezaalhabsyi4437]

Dell deliberately did this for security reasons, even though they actually wanted to sell batteries

[@batman4e]

Man, the Dell charger is communicating with the laptop, if it has not the required power rating it will not charge.

[@skjatayumobileandlaptop1013]

Iam working dell manufacturing it has psid

[@goggo43]

Proves that things always work better with less bits.

[@georgeindestructible]

Not necessarily but in this case it proves that you did not understand why this issue happened for sure, read the video description.

[@alimahdavi9775]

Diod like capacitors 😎

[@leerzeichen1910]

Daca iei 3.3V de la 3.3V power rail de pe placa de baza pt acel charger id pin si folosesti bench power supply pt a incarca bateria va functiona?

[@alexg9155]

Nu, acel 3.3 este un "average" aratat de DMM, daca pui osciloscopul pe pin vei vedea ca pe acel fir are loc o "convorbire" prin square waves.

[@leerzeichen1910]

@@alexg9155 aa, asta inseamna ca nu ai nici-o sansa sa incarci bateria decat cu incarcator dell, sau ai putea reda acel semnal cu un spectrum analyser si cu power supply sa incarci bateria?

[@leerzeichen1910]

@@alexg9155 scuze, cred ca voiam sa zic generator de semnal, cred ca spectrum analyzer e altceva; inca nu le am asa bine

[@alexg9155]

@@leerzeichen1910 Doar cu incarcator Dell din cate stiu. Acel semnal nu cred ca se poate emula pentru ca e vorba de niste date practic. Poate exista incarcatoare aftermarket care pot vorbi si ele, nu am cautat, dar cu power supply poti incarca bateria doar "pe direct" cum a mai aratat Sorin in trecut (intepi bateria practic) sau cu acel battery analyzer.

[@leerzeichen1910]

@@alexg9155 da, asta stiam. doar ca ma gandeam in ideea... ok, cum testezi daca circuitul de incarcare al placii de baza functioneaza daca nu ai incarcator original? te ocupi cu reparatii? stai in RO sau in DE?

[@mfyapp1969]

Charge % limiter

[@TheDigitalAura]

Having an empty RAM slot is criminal lol.

[@orange11squares]

some people now have laptops with no ram slots.....that is the trend they want to push :))))

[@jalalyn]

👏👏👏👏👏👏👏

[@lucataszarek8782]

Hello🤝👍👍👍👍👏👏👏👋👋👋👋

[@aliemlek]

👌👌✌✌

[@Maciej.R.]

Jak mostek H.

[@kwamegondwe5636]

Iweo umatha

[@lablackzed]

Smart arse.🤔😆😆😆😆👍

[@windycl111]

❤