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@grigoreman7198 Күн бұрын
Hard job. Thank you.
@akcoord9615 3 күн бұрын
could you plz in full video explain power cycle and boot stage sequence in modern and old motherboards in detail with scemaics thanks
@philiptroniks 3 күн бұрын
@@akcoord9615 Sure, in future videos
@Strino78 3 күн бұрын
Excellent diagnostic analysis. It really reinforces that you should always remove ac and battery power before doing any service or repairs.
@akwasiopoku3189 4 күн бұрын
I bet the ec is also dead if it got fed 19v too. poor engineering design on the part of the manufacturer.
@philiptroniks 4 күн бұрын
@@akwasiopoku3189 Nice catch. I guessed it first when I saw low ohms on 3.3v rail that EC would have been shorted. But after isolating 3.3v_alw line which is going to 1.8V_PRIM regulator, after, I got high impedence on 3.3v_alw. Still the EC chip is connected to 3.3V_alw. Based on that I guessed the EC chip is ok. The supply pins on the EC chip was reading high Kilo ohms. But to know the full working condition of the EC we need to prepare the board and check it. Because sometimes even supply pins hav high impedence EC chip would have been gone dead, although we will have 3.3v on all supply pins. If we check reset signal in the EC chip there won't be a reset. I guess once 1.8V rail is shorted low impedence from SoC is sent all the way from SoC to 19v rail, which the charger IC would have detected short and cut down 19v from main power rail. Which might have protected EC. Would it be like that?
@abdalabed-pi4ku 4 күн бұрын
Good 👍 👍 👍 Keep going, may you be rewarded well.
@abdalabed-pi4ku 4 күн бұрын
Good jop
@wares9288 4 күн бұрын
Thanks for the good works . Keep it up
@musapetro344 4 күн бұрын
You are the best sir! I recommend technician to subscribe to this channel as they will learn alot
@santhirakumarmekatheepan2459 4 күн бұрын
Super Anna good study for the video 👍❤️
@musapetro344 4 күн бұрын
Nice and deep explanation sir!
@nikeshdhakal4197 5 күн бұрын
Nice case study❤❤.
@darattaqwa 5 күн бұрын
Nice video thank you, what would happen if you short the pins on the sio when taking readings, can chip be damaged?
@philiptroniks 5 күн бұрын
@@darattaqwa Great question. Mostly SIO handles signals from various components in and out of the chip. The voltage on these signals has very less amount of current like 100-350micro amps. Shorting these pins will not short the chip. Anyhow avoid shorting the supply pins with other signal pins in the SIO, because in some motherboard SIO is supplied with the inductor voltage 3.3v which is basically having above 5amps. Shorting this line with other signal pins will short the chip. Anyhow for saftey purpose use magnifier or microscope for checking. And also use sharp needle probes for your multimeter.
@darattaqwa 5 күн бұрын
@@philiptroniks thank you so much for the detailed explanation, you are a great teacher and I’ve added a lot of your videos in my playlist to watch later, I’ve liked and subscribed, keep up the good work
@nikeshdhakal4197 7 күн бұрын
Very informative video❤❤❤ . Do you have telegram . What is model of you hantek dso?
@philiptroniks 7 күн бұрын
@@nikeshdhakal4197 DSO 2C10
@nikeshdhakal4197 7 күн бұрын
Ok sir thanks for reply .
@abdalabed-pi4ku 4 күн бұрын
شكرا لك مع تمنياتي لك بالنجاح ❤❤❤❤
@rosetaylor-nl1ol 8 күн бұрын
I enjoy your teaching Sir. God bless you
@philiptroniks 8 күн бұрын
@@rosetaylor-nl1ol Thanks
@rosetaylor-nl1ol 8 күн бұрын
Nice, thanks for sharing. God bless you.
@philiptroniks 8 күн бұрын
@@rosetaylor-nl1ol Welcome and thanks
@rosetaylor-nl1ol 8 күн бұрын
@@philiptroniks I'm looking for mentorship in this field. Are you available?
@philiptroniks 8 күн бұрын
@@rosetaylor-nl1ol I'll try my best to educate you through the case studies that I attempt from repairs. I will share important matters about diagnosis in future. Stay tuned !
@akwasiopoku3189 10 күн бұрын
you are a blessing to us newbies in this proffession.
@philiptroniks 10 күн бұрын
@@akwasiopoku3189 Thanks
@KOOS-EDTSOF 10 күн бұрын
exelente gracias
@philiptroniks 10 күн бұрын
@@KOOS-EDTSOF Thanks
@ravindraadapa2952 12 күн бұрын
Where you get schematic diagrams of all motherboards sir?
@philiptroniks 12 күн бұрын
@@ravindraadapa2952You can get schematics from free sources like Alisaler, Smanuals, Badcaps, laboneinside. Also there is a paid website called Vinafix where you can get most of the Schematics and bios files.
@yellouu_theree 21 күн бұрын
I really like your variable power supply . It seems like vfd display which is my favorite! it looks bright and refresh rate seems relly high .. and those decimal places on ampmeter :O Must be a joy using it .. What is the make and model i need that in my workshop asap !
@philiptroniks 21 күн бұрын
@@yellouu_theree Thanks for your comment. It is just a normal regulated power supply. YIHUA 3005D.
@highaf0 21 күн бұрын
❤
@skullbreakerteam355 23 күн бұрын
super sir❤
@skullbreakerteam355 23 күн бұрын
weldone sir🎉