Laptop No Power Repair - Finding fault using Thermal Camera 

The "5X" IC is a RT6575DGQW (RT6575D QFN-20 IC Chip) DC/DC Step Down Controller - if you have an issue sourcing, I have a spare here in the UK I can send to you

that ic 5x its step down controler providing 3.3v and 5v..its a richtek ic 5x= RT6575DGQW

Not 100% sure but i would guess its a -RT8249A/B/C - Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs. but check the datasheet and pinouts as it comes in a few packages.

Hey,it is richtek RT6575C/D. What you have here is probably shorted kbc multicontroler which is powered from that 3.3v ldo line.Very typical case,so before removing that regulator,inject 3.3v into ldo line and watch for heating spots on board,kbc the most.Good luck

You are not just good with what you do do. You are also humble. You admitted you don't know what the component is and people with the knowledge about it were eager to give you the info. This is how keep on learning. Respect Boss.

It finally gets interesting. I'm looking forward to part 2.

RT6575A/B is a dual-channel step-down controller

I am glad you found the issue. 😁😁😁 other shops here were trying to junk the whole motherboard. I try not to be wasteful. I knew you would find it.

Can you do a walk through of the tools on your workbench. Would love to see what you use.

Would you please share the Thermal camera model no./specification sir?

Interesting.. now i know where to go for repairs.. im just few blocks away from your shop lol i live in Northridge

If you give the motherboard number i will try to get the schematic, thats if the 3.3 v dc ic buck controller, but somethimes if not the ic, i suggest to remove the coil and see whats line have the short, im think is pl301.

I have an asus 403n motherboard with a pwm controller that has similar marks, except mine says 2N=3L E3U. According to boardview its name is "PWM CONTROLLER RT8249CGQW RICHTEK WQFN-20L"

From what I see it is a synchronous dc/dc step down converter providing 3.3v and 5v . The only supplier i found was a couple of eBay listings so you may need to find donor boards to find this ic.

Love watching how you work and find problems... Keep up master😊

i bet that its the 3v and 5v power supply buck converter ic

A very stupid question for sure for all the experienced people we all have been there, but which lead he has when testing the capacitors? Negative or positive? If negative where is he touching the positive? Because all i know it's capacitors are read in Faraday. Thanks a lot for your help.

Open the jumper PJ304 and see if the short circuit disappears. It could be the EC is dead and not the StepDown.

Your videos never get old, something new every time. Recently I perform microsoldring in a flex cable 3mm flex having 15 wires I sold it perfectly without microscope because my hands are perfectly still but I didn't have solder mask I solder one side other side get desolded only by touching iron on another side for fraction of sec.

It's a Single Synchronous Buck Controller.

No Hiroshima bomb here.....🤣🤣🤣🤣

Hii,you can write the model of termal camera ,thanks for all video

Brother Assalam o Aliakum I m an Engineering Student and I m inspired from Your Hard Work I like Hard working people like you, Lots of Respect From Pakistan

Hi Alex Steve from belgium you can use tps51225c for your ic. It is the equivalent for 5X =RT6575DGQW

Its a step down controller. 5X = Product Code 5FM1N = Is the product Date Code 5X is RT6575 QFN-20 IC Chip ( Product code)

I've found the manifacturer. Search for Richtek 5X. According to documenr that I've found, 5X is Product Code and 5FM1N is Date Code. You can find that file by searching DS8249-ABC.pdf and look for Marking Information on second page.

Hello Mr.______ WHICH CAM MICROSCOPE CAMERA YOU ARE USING

Hurt your brain by thinking 😂

thermal camera very rarely used by repair shop in my country because of the price, some using what they call MBR (high current 5-10A) to find fault component

Best part No Hiroshima bomb here.....🤣🤣🤣🤣 hahaha

I am having a battle with HP Omen laptop. Looks like the Richtek L8 on it has similar problems as the device wont start and just blinks shortly while pushing the power button. I am looking forward for Part II.

what about a fluke Ti480 , does it good for electronic repairing ???

rt6575dgqw dual chanel synchronous dc dc step down controler with 5v 3.3v ldos

Which thermal cam that you are using can you mention brand and model

why are you keep saying hiroshima bomb? you know what that means? For humanity, especially Japanese people. You can find the another word to describe.

Anakartın şemasından PU301 numaralı componentin şemasını bulabilirsiniz. IC yi değiştirince sorun çözülecektir.

I have some 5x=5A ic

RT6575C/D Applications  Notebook and Sub-Notebook Computers  System Power Supplies  2-Cell to 4-Cell Li+ Battery-Powered Devices Ordering Information RT6575C/D Pin 1 Orientation*** (2) : Quadrant 2, Follow EIA-481-D Package Type QW : WQFN-20L 3x3 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free) Pin Function With C : LDO3 Always On D : LDO3/LDO5 Always On Note : ***Empty means Pin1 orientation is Quadrant 1 Richtek products are :  RoHS compliant and compatible with the current require ments of IPC/JEDEC J-STD-020.  Suitable for use in SnPb or Pb-free soldering processes. Marking Information RT6575CGQW 5Y=YM DNN RT6575DGQW 5X=YM DNN 5Y= : Product Code YMDNN : Date Code

Your voice like Obama :)

When he is testing the components after using the thermal camera, does he leave the board plugged into power? and testing in diode mode?

what setting is used to test for capacitor shorts? The diode check?

That Chip is Dual Channel DC/DC, Synchronous Controller...

Another HP dead laptop.....like always, the worst quality laptops 😂

Hello Dear NorthridgeFix, I was watching for some iPhone repair, and got along with other of your videos! YOU ROCK!!! I'm addicted to your videos now:D Best regards from tiny country of Slovenia -> Where your ex 1st lady was born

you can download datasheet www.richtek.com/assets/product_file/RT8249A=RT8249B=RT8249C/DS8249ABC-02.pdf

Love your videos & solder talents.

RT6575DGQW step down controller

انت مبدع ربي يحفظك و يوفقك

Nice video sir it's DC to dc regular IC.

it a ISL62386 Dual-Channel Synchronous DC/DC Step-Down Controller ...

sir didn't you use flir MSX feature?

This is IS Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs

what tester are u using?

Hello sir, do you clean motherboard desktop and laptop use water ?

can we detect any shorts with thermalcam? as a learner will it be easier for me?

Thankfully my HP laptop powers on and works but the only issue is the battery that is draining fast.

I'm an electronic student, which thermal camera do you suggest to start ??

It is up en down mosfet driver it give the gate the voltage to open .it is used in many laptops from the same generation, ik u have damaged motheroboard u can find one. Thank you very mutch for all your very goed videos i learn mutch ,

That's a $3K+ thermo camera!

Hey , can you post what thermal camera and microscope your are using in your shop?

Hi , Great video, What thermal camera is it that you use?

Sir me need thermal plz tell me how much and how buy in India ❤️ very useful your all videos 👍❤️❤️🙏

It is RT6575D chip

Thanku ❤️👍👍👍❤️❤️🙏❤️

good sir 👍👍👍👍

If the cap was the problem.. which is the value for that component ? Regards Alex italy.

greetings, what is the model of the thermal camera?

How did you test the last capacitor? Please explain.

ritchtek rt8249A/B/C The IC under consideration good day

love seeing your vids.. learn new stuff every time

If we have to find it, we need more info about MB 😉

Go through schematic of the board u will find the chip no. There 👍

I think this is Dual-Channel Synchronous DC/DC Step-Down Controller

Dual-Channel Synchronous DC/DC Step-Down Controller

What if the component you are replacing is not the main cause of the fault, but a side effect?

Great trouble shooting techniques. Always like seeing you work thru the problem. 😁

RT8249A/B/C. Not sure

Awesome

step down controler

I also done one laptop shorted with I/O ic andu another one with ic connected to usb socket

northridge fix thx for heart i want to restore my acer tab b1 711 but i am in india how could i do

Hi, Thanks for the great videos you make! Got one question that i hope you can answer for me. What temperature do you use on the soldering iron? Thanks alot :)

It is beautiful about your advanced insight ! thanks a lot..

I think that ic is corrosion your opinion sir

is there a thermal imaging camera that you recommend??

Sir it may be logic controller ic

is there a part 2 for this video?

RT6575C/D from richtek

its a DC/DC controller

Great 👌 I'm waiting for next video

That ic 5x its step down controler providing 3.3v and 5v..its a richtek ic 5x= RT6575DGQW love from INDIA🇮🇳

You should spend more time on it,remove that 3.3/5 volts voltage regulator ic and Check for short again on that cap to find if the short comes from ic or 3.3 volt rail (or 5 volt rail).of course if there is a short under 3.3 volts rail Power suply (that 5×=6f ic)has to be hot.

Can I know the Board model number?

It’s dc-dc step down controller

Can I know what microscopic cam are you using

👍👍👍👍👍

Love your vids man keep the content coming

wow that thermal looks awesome. Great quality.

Awesome ✌🏻✌🏻✌🏻 Nice try👍👍👍

You are awesome and I wish you lived NY, you would put all of these techs to shame! Great channel and enjoy the holidays. Best regards to you and yours!