Acer Nitro 5 AN515 - No power, board repair - ISL88739 chip replacement 

Sorin, i am sure you mistaken when you said 100 ohm resistor, but for the other audience which is learning, that was a 10 ohm resistor. 101 should be 100 ohms. Cheers!

Wow, you make it look easy. I have learned a lot with this channel... Thank you.

I have the same laptop I5 8300H GTX 1060 - I changed the screen for a 144 hz one and added 16 gb ram, and a 2 TB firecuda ssd/hdd hybrid been working flawlessly for almost 5 years now. I also replaced my SSD for a 1 TB Samsung 980 after updating my stationary :D I've replaced the fans, and thermal paste a due to noise once.

Youre the best repair man i ever seen. 👍

I use to think your videos are long and boring but watching this video and gaining all this knowledge on top of the knowledge i have made me feel ungrateful..the way how u tackle this problem is very educational and i sure did learn something...thank u

Sorin the Master 💪

Amazing 😂, your are the teacher 💪💪💪

You know you're watching a pro when it looks pretty easy, but if you try to do the same you find out it's really hard. I have this same laptop and I enjoy it a lot, I believe Acer did a lot right with this series, that's why it sells a lot, and if it sells a lot you know you will find replacement parts for it.

Hi. Mr surin. You are a real engineer. Im learning lot of best thing since i found your channel. When i watching your channel you are solder new chip using old nonlead solder remaining on the board. By the my experience that solder not flow very well and need more heat to melt that solder. At this movement im doing i clean old nonleaded solder and apply leaded solder with good flux. It will melt very easily and flow very nicely. Mostly its not make solder bridge. Actually i dont know your point of this step just i share my experience. As a beginner i dont have a ton of experience like you. Do not miss understand about my suggestion. Im still learning from you.

Thank you Sorin, had this exact same issue except with an HP that they refused to warranty. Repaired it myself. Talk about annoying. Since they won't honor the warranty might as well roll up my sleeves and do it myself. The next part was Renesas bought Intersil and they won't release the full schematic. I finally found one of the pinouts (not values though) after hours of searching but I already condemned the chip anyways. I'm glad you delved into this fully because I thought I was crazy. I wonder if it's a gaming laptop thing, I'm going to put a cooling pad on it when done just in case... I'm only guessing maybe it is heat from excessive gaming. I always make sure my laptop is elevated for airflow but even then....

31:36 SMOKE

25:12 It was me :D 12 days ago we spoke about that in comment... thanks for measuring removed resistor :D

'Pretty' sure you already tried changing that chip before with a different number (9 to 8, or 8 to 9) and it's not interchangeable.

40:16 Famous words - "And we have a picture"

We have picture😂❤..thank sorin for sharing...mouser💯trusted

Had a similar issue with the power management chip, replaced it and laptop worked again. Mouser is great for ordering stuff :)

What a lesson... You are just amazing sorin...

nice video and good for learning. thanks you. i know this is one of many ways to know how to fix this problem. i still need to learn from you

I am learning day by day just by watching your videos and I am confident that I can diagnose the same way on some laptop.

Sorin, you could ask Mouser or any PCB manufacturer if they want some ads in your videos. With the main audience of people interested in electronics, we wouldn't mind this, but will help you with some money to always have good materials and components you need for repairs

Sir, I pray for your long life and happy family. You are an inspiration to me. Love ❤ from Bangladesh.

Good job Sorin ! Thank you for great learning experience

This time it's a nice laptop.

Very interesting video thank you sorin to share your knowledge with us :) it help me a lot for my job I own a computer shop and fix a lot of board issues :)

Another great repair Sorin! ☺

👍👍for me you are the best👍👍

Hello. Master soldering skills. How to not burn the conector.

A masterclass in repair, thank you

S is for Sorin…S is for smooth 👌

25:06 No, it is not 100 ohm resistor, it is 10 ohm resistor. A 100 ohm 5% tolerance resistor would be "101", not "100".

you missed the smoke at 31:36 LOL

Thank you so much

The chip pins was shorted when you soldered the chip

Hi sorin , that chip isl power management all ways get shorted

proper Romanian genius.😂😂😂

As usual, another great repair.

This was very great Sorin

14:55 that is why Sorin's channel must be graduated as 1'st at all

Acer gaming laptops usually have burned first mosfets. I got mine almost burned with accumulated rust.

Your The Man! 👍😎

there was a video sorin shorts coils to ground, to find short, please some one send link of that video i can't find it

Hello, I have a motherboard for hp- Omen 15-ax250wm problem had some water in it and was disconnected and was in hibernate mode.. the motherboard was cleaned with alcohol and thiner everything seems to be OK and battery is charging. No visible shorts and no component gets hot. When I push the power button I hear a click and that's it doesn't turn on and I tried to figure which component do this click but I couldn't find it. Any help will be appreciated Thank you in advance

hello i have a laptop acer nitro-an515-52 it turn on but no image, the first mosfet is short but i found a burn capacitor near SY8288CRAC chip change it but no power and fan don spin cpu becam hot charging indicator blinking but battery is fix ok 13.5 volt , with the bord out and on charger plug in no curent taken mean no shurt what can i do what i must check thanks

Hello sir.. from the Philippines, the laptop i repairing right not is auto shutting down.. if i plug the charger, the lpower led will turn on automatically and after 3 seconds it will shutdown. And also its not charging even the 8volts in the coil are present

Great, thank you

I have the same computer with exactly the same problem but I don't know where to find the repair parts

Professor Sorin. What is the main power rail? And whats its importance to the MoBo Thanks in anticipation.

Heat and Electronics? Nop😂.... Senior Sorin! Weldone Sir💪

Ledgend. Same problem and found my dead mos fet. Hope that is all u need. New subscriber here 😎👌

I admire you! I don't have the tools or your wealth of experience but I can say from a Manufacturing perspective that making a Light Bulb that Lasts Forever makes for a Bad Business Model! I've worked in the Repair Industry and in Manufacturing and there will Always be work for Repair Engineers. I used to think the contrary and saw the decline of Domestic equipment made to last in favour of replacing them when faulty

what did he changed moster something he was explaining

keren bang,, microscope good ,,best repair

At +/- 4:30 min, where are you placing the probes, on a fuse or is that a capacitor?

I just cringe when you never clean the pads and put fresh solder down.

magic... :)

Amazing .............................!!!!!!!

good job sorin

Is anyone know the series of the MOSFET? I have confused looking for the series😢😢😢😢

Thanx you very much, Sir.

Cuanto deberia tener en acin ? No encuentro datasheet del ic charger es el mismo modelo

Today Sorin is perfect

It is not 100 Ohms resistor, it is 10 Ohm resistor !:)

Good joob❤

Spring I would like to know when you say a little current what is it 500 milliamps ??? Thanks for the info. Aime

The termo pad is one time use or more,? and where you by that

Hi. I have Acer Nitro 5 AN515-52-77HV. I have orange charging light on but computer will not power ON. Tried the power reset and pin hole technique, still no power. Opened the unit, removed battery, checked RAM, checked all connectors, checked motherboard... nothing out of the usual. Pin #1 displays 3.3vdc. Tried to momentarily short Pin #1 of keyboard connector to ground to manually switch ON, nothing. No liquid spilled on keyboard, No ants crawling. Please HELP!

I think the same happens to my Acer Nitro 5 AN616-55-7079. It has a Core i7 10th GEN and a GTX GPU. No Power at all. No idea what to do, all PC repair shops in my Area denied to even have a closer look to the Problem. The error occured shortly after running out of warranty. It‘s a gaming laptop but only used for audio as DAW. Would you accept when i send it to you ?

Hi Sorin. I'm from watching a lot of the other videos where the laptop was dead - no charging light, no powering up. Right from the point of entry of power, I can't find the 19.8v, or any of the other power supplies. All I'm getting there is 0.6V. The 0.6V disappears on the output side of the second mosfet. In the beginner videos, you'd said to use brute force to find whatever capacitor is shorted. I don't have a power supply. What alternatives can I use? All I have is the charger and a multimeter. Thanks.

From my quick comparison of the two datasheets, the 88739 charge controller has a hybrid-power mode allowing the charger and battery to both power the system, which the 88738 seems to lack. The output circuit topology is a bit different with how the FETs are wired. Possibly the laptop used this feature while the Apple did not.

17:58 burnt resistor.

Ok! Is there a way of checking the chip? Like when you see boards on internet and they are £100 or £130 but they guarantee how do they know that it’s a sound board? So two Questions there. I love the fault finding like when over the years I have had a problem, this can be with anything, but there is always a sequence.

Very nice Video🔥🔥

Hello Sorin , please what camera do you use for recordings??

Amazing video Sorin! Thank you for sharing your knolage. What a master! 💪💪💪💪

16:59 is that a spark?

13:15 flux down T° lol

Nice job!!😊😊😊😊

Youre the best

Nice repair

👏👏👏👏👏👏👏👏👏

30:48 here u can smell the fear in his eye's that he needs to buy a motherboard because he broke this one😂

Nice repair.. nice lession.. it so funny and interesting listen you.. many thanks Sorin

superb

amazing brother ! so cool what privilege we have to learn from you all this problems ! watched every video from day 1 and every time you learn something ! Respect!

The channel is so educational, it's a dream come through for me.. God Sorin 👏🙏

Sunteți român.

Wow

I was skeptical with the first chip you replaced, it looked dodgy!

👍👍🙏

"resistor heat sink!!!" LOL !!! what a king !!!! Bravo!

Another informative video. Thanks!

8:00 PEOPLE DO THIS ALL THE TIME THEY SEND YOU SOMTHING TO GET FIXED AND THEY EITBER PURPOSELY BROKE IT OR THET CLEARLY KNOW AND THEY SEND IT TO A REPAIR MAN AS A SPOOF. AND IM GETTING FING TIRED OF IT

How you know so much? Excellent video

Hi! May I ask what temperature you have your rework station set at when removing a MOSFET as I'm struggling to remove them on some old laptop motherboards I'm using to practice? Thanks.

i have a board doing like this one thx you thorin🥰🥰🥰

Where did you buy you mat?

I do miss the uncut videos. You just talking away and getting the full idea of how you find the fault etc. Mate been watching you for years still watch the cut vids but they are not the same. Keep up the good work for the community.

Why russin when we have the flux to do the job???

Bravo , te urmaresc de ceva timp, in unele faze cu gura cascata 😁