A New Way To Trace Short Circuits in VRM Using Basic Equipment : Find Shorts Motherboard and GPU

That's a good idea it's the first I've seen of it on electronics. I've normally seen that on breakers and switches to see if there's a high resistance fault.

Elecrotonics oldtimer here; the only way to finally lay the problem to rest, would be to change the little chip. Why is because the chip could be getting hot because the CPU is drawing excess current.

Thermal imaging camera is the best tool here🙂

Nothing new

Is the low Voltage on the Right Side of Coil the Cpu are Dead! On the Left Side of Coil the IC is maybe the Problem. If the IC is, youre lucky...

That’s a nice board. Giving voltages on the silkscreen makes repairs easier.

The small screen blocking your work there, can't understand!

Well done
Is there a Part 2 yet please?

Nice bro.

Not a new way at all. I've been using that method for years. You only need to find short to GND, then that obviously pin points to the coil at fault. The only time you would expect low ohms is on a GPU, about 0.6ohms. But yep - I would inject 1v at the Coil and pull out thermal cam, and see what glows. But you found the fault anyway.
Good explanations though.

In my day we would replace the fuse with a nail and 'tune for maximum smoke!' You could soon see which component was bad,

Thanks a lot Teacher.

You could find which side of the circuit is shorted using multimeter and power supply, but you probably won't be able to pinpoint certain shorted component. And this is where you use a thermal camera. I would argue that thermal camera is basic equipment. Rather not. And if you had a thermal camera you wouldn't need to spend time to find out which side of the circuit is faulty.

It's the way you do it is what matters. That's what she said😅

It's not worth your time what you would charge is more than it's worth

Please may I ask if you can post a vid (or two) on replacing smd's as well as the chip in the video? Bad habit of lifting or moving other chips around in process or burning them . I am so nervous to remove the problem parts off of boards.Videos are absolutely great! Thanks for all the good advise and alternative thinking to look at problems in more than one way.

Not much need for electronic repairmen anymore.

Was it the chip ?

Good Troubleshooting Logic. A Third method to find the shorted component it to spray a area of the board with atomized powdered FLUX.... Saw this on another video channel where the brown flux powder melted on the hot components. THAT is actually what I was expecting to see in this video. But traditional troubleshooting worked just fine.

I actually have about 4 of those mag boxes all broken lying around

Try your milliohm meter and blow warm air on the components say through a straw, it should change the meter reading when you find the bad component.

Thank you

Definitely going to try this to hopefully recover a Lenovo M720q motherboard that just refused to do anything at some point.

thank you for sharing and making this informative video

Nice repair, as always!

Not imported trough Estonia but pcb is actually printed in Estonian factory.

This was like watching you find the last gift under the Christmas tree, and it being the thing you really, really wanted. 😂👍 Great job and thank you for all the teaching that you do, Rich.

Thank you for your teaching I’m pretty much self taught and still need a lot more teaching your videos have helped me out a bunch thank you and continue the awesome work🎉

The white strips generally on cheap supplies mark the POSITIVE wire!

And positive isn't always the middle it's different on units!

Nice

Great video, may I ask what thermal camera and macro lens you use please. Thank you.

A bench power supply and a millivolt meter????? Congratulations you idiot, you just invented the ohmmeter!

Thank you for everything you do,

It'd be nice if I could bring you my cassette deck with a 12 pack of Guinness.

So glad I've just found this channel, I've been considering getting into the electronics repair field as I have a general knowledge of electronics and due to back injuries can no longer do the automotive technician/ collision repair work I've done the last 25 years. I've always had a passion for repairing things since I was a kid, not to mention my granddad was an old tube style TV repair man for awhile in the 80's after he retired from International Harvester. With that said aside from the obvious of a good solder station, multimeter, microscope and desk power supply what other tools would you recommend I need to get started in the repair business? And btw hello from Southern IN, USA!

Relay detaile ৬ pin

I know they're expensive, but a thermal camera is so good at this!

يا ريت مختصر عن هذا الفيديوا ولماذا تقيس المقاوات حتى استطيع اعادة الفيديو اكثر من مرة وافهمها

wow super 🥰🥰🥰

Hai dear it's me from India tamilnadu state Namakkal dt
Am an professional electronic engineering guy...

Very wonderful...very intellect..pls post such a wonderful tech tip...

👍🏻👍🏻

❤️❤️

💪💪

🙏🏻🙏🏻

P.

much appreciated!

Can you help me identify this and what can I replace with but believe is some kinda resistor and here is what I find on it nv2wj 0.15 ohms. And think f047 s is pink but has no color bands. Came from a 70” tv

sorin does this in a same kinda way but using thermal cam for localting a low side shorted mosfet but injecting voltage to the coil while short using tweezers to the ground

That was good thinking !! i will remember that one

Brilliant video

I like how you properly say that you are injecting current, alot and i mean ALOT, almost 99% of videos on YT say injecting voltage, which technically is incorrect as you so thoroughly explained here. Thanks for the video this WILL be useful!

What a brilliant simple idea.

Hi please let me know what your WhatsApp number. I have singer quantum 9960 with blown fuse so I replaced the fuse but no luck .my machine was imported from USA .I think some one has plug it in which led to fuse blown. Please let me know if you can help. Cheers.