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First thing i'm testing on a faulty board, and the easily.. is the cmos battery.. but was not the fault here ;)

Excellent work ❤🎉

Hi ! Did you simply remove the bad capacitor or replaced it ?

A very clever troubleshooting ! but too much damage on this board, anyway very informative...

very clever work ! A thermal camera is a must have !

Gosh, every repair is a bad cap. Why do I always get dead PCH and other cr@ap?

Thank you very much for your video and excellent explanation.. Keep up 👍...

love ur vids so much sir much love an appreciation to u and i love the knowledge u have to tech us tysm behalf of every one in here keep the good work up sir we love u tysm

The way you explain fault finding is fantastic, keep up the great work.

Can you please make a video on dell precision 5510/5520/XPS9550,9560...thanks

Thumbs up

Thanks for the knowledge sir

Excellent

Thanks for the knowledge sir

I really like your teaching style. Excellent presentation

Excellent sir

Excellent

Thank you so so much for this video! It saved me few quid for mechanic and i did it myself, thanks a lot!

Excellent

Good job with these vids. Hails from Finland 🙂

Excellent tutorial. Thank you.

Alway nice to see your videos , Thanks

I really enjoy the diagramming. your method really helps my understanding of the circuits. i was wondering if you would repair that after seeing how many blown components you found.

Hi Everyone, In this video I cover the PWM IC and power MOSFET. I'm trying to build it up section by section to hopefully have one final video with a complete run through of the entire SMPS power supply. When I first started doing this, I didn't think it would be possible, due to most of the components being through hole components. But I am happy with the results so far, and I will keep pushing on. Next we will move on to the transformer and rectification of the high frequency PWM voltages on the low voltage DC output. I also think I need to get some sort of animation for showing the switching on and off of the power MOSFET. I have bids in on some "not powering on" Dell laptops on ebay so hopefully I will win one or two of those and that will provide us some good content for next week. thanks.

Love to see the resistors in parallel calculation. Makes me nostalgic.

Thanks! Very informative.

Keep up with your excellent troubleshooting work! Thank you!

Thank you for your very informative fault finding technique with great visuals making it so much more easier to understand 😀

❤

Good call. Too much damage to bother repairing it.

Great job. Thank you!

👍

I'm in the same boat as we speak with a Lenovo that also had shorted the LDO and burned EC (among other things). I had a board with the same EC but obviously different EC firmware on it so now I'm with a dead laptop that I need to get one of these ISP programmer on my hands and give it a try. Do you have a programmer and the EC FW? I don't think these EC are self programmed through BIOS (mine is a IT8586E) even if their internal SPI is empty. It will be a very interesting video if you have a programmer, keen to watch it.

I ts worth noting that the ID pin must be working for the laptop to work and has to be present usually if this pin is shorted or connected wrong it leads to a short circuit in th IO IC as the ID pin is connected directly to this IC.This usually happens if the power adapter is not genuine Lenovo one.

You ll get it programmed by someone else or do it yourself?

I like to follow yours vidéos, so well made ! I'm curious how you're gonna do to program your new IC ?

Key measures to understand failure analysis: (5:20) and (10:10 and 10:45). Excellent work. Thank you very much for sharing. Two thousand sincere congratulations. All the best.

Hey, can you explain "There is circle in top"? can we identify if ec chip needed to be programmed by that?

❤🎉excellent.

nice detailed run down of how to find faults keep up the good work.

i learn circuitry better watching your videos. really enjoy them. thanks

Very informative and helpful video. Thank you, @therepairshare673

Great video. I love our difference in the words we use. You say "plug out" while I say "unplug". Keep up the great work. Happy 2K subs.

Hey Everybody, Still having difficult getting good content. What I'm trying to do with the few laptops that I do get is to squeeze every bit of learning out of them. So, sometimes where there might be a more direct route to repair, I am deliberately taking the slow route to try and include anything I think might be helpful. Please like and subscribe if you like what I do. Just passed 2K subscribers, thanks to all who subscribed (and thanks to Dana below for reminding me).

Awesome video.... Keep going. Make more videos

i really enjoy your videos bro....awsome work

I have one mosfet and one inductor faulty on the 19V Rail, but I cannot find the correct parts. Can you help me?

Get a thermal camera. They are affordable now. I bought a used gen 2 flir one. For 120$. But im guessing the thermal will show heat spot on ene.

That was a genius idea to work with colors. Thank you for the best instruction channel in laptop repair of RUclips.

I see a bulging capacitor.