Wonder how to do this same thing BUT without schematic? Watch this video too: ukposts.info/have/v-deo/sZqpqYOug4Ro230.html

I have never done this , I read several sites to find out how to do it, then I came here and learned 10x more than all the others in only 10 min so thank you!

This is the very first step (in) troubleshooting. Great job! We don't have (time) to guess.....

Very nice demonstration of fault finding using schematics. I find that schematics are mostly very difficult to find for anyone outside of the industry, so I have to use different methodology - firstly check all electrolytic capacitors for signs of leakage/doming and replace any that have failed, then have a close look at the board - particularly components and soldered joints for signs of failure (under a microscope) - the fault that you had I would have found readily, and maybe in less time too. Next, look at power supply circuits and check that they're functioning as they should, and check all discrete semiconductors Then locate blocks of circuit that I recognise and test the components in each block. By this time most problems have been fixed. Checking the datasheets of unknown multi-pin ICs often comes up with sample circuits, many of which have been utilised by circuit designers - that makes some fault finding very straightforward. If after all this the fault remains and a schematic is not available, it's probably time to invest in a replacement pcb...

You missed another dry joint above the broken pad you found … look at 12:14 on the top right it has cracks all the way around the pad.

Very nice chuck fixture on that lathe. My main hobbies have migrated from EE over to Mechanics recently. I had never believed myself to be an innovator until I finally began with a few diy opportunities in recent times. I am saddened by the lack of instructions included with test equipments recently. So I am grateful for troubleshooting demonstrations such as yours. Accolades, and I wish you luck with your lathe!

Yes! This Takes the mystery out of the equation! Thanks!!!

I was so invested in this!!😆 well done

Thank you.

Thank you for the great video.

Those that don't know that triangle thing on diagram is called a op Amp, operation amplifier..

Is there any way to test signal without oscilloscope and a multimeter

How do you always get access to the schematic diagram of the circuit...there is serious difficulty to find for certain specific devices

This is exactly how you would systematically work through a car's schematics.

I like to use a plastic ink pen with the writing part of the pen retracted when I touch the board. The eraser part of a pencil also works. Never touch it with my fingers.

Nice 👍

Hello. the electrical circuit you are using, in addition to the motors (why two?), is it from a washing machine? What changes did you make? From the schematic drawing shown in the video, were the changes in the handwriting? can help? I'm also building a mini lathe and wanted to use a similar motor. but I'm having trouble controlling the rotation of it. Thank you for your attention . Cheers I forgot.... congratulations one more subscribed

I've been trying to learn about using dmm because recently had a bad hexfet on tennisball machine PCB.. that's how I found your awesome video. However, now I'm more interested in that spindle head on the lathe.. Is that a Taig 5c or did you diy the the spindle, bearings and housing? I'll have to look through your channel and see if there's more vids about the lathe. I'm trying also to decide which route to go with a home hobby lathe and the Taig 5c spindle head is $600 ...that's a nice looking spindle/head and perfect for what I'm looking toward for making pool cues update: ok nvrm, I found your video regarding the lathe ... luv it

Thanks for putting this video together 💯 Did you have much trouble sourcing the schematic diagram of the ESC circuit?

My 10.2 PowMr will harvest so Load is being met but battery is not being charge till about 1800 w. The PV input readout is an arbitrary .5 kw till about 1800 w PV input. No one has had a clue why so far. A replacement 6.2 kW PowMr works perfectly. So the issue is surely in the 10.2 unit. Issue existed at initial startup.

Huh? You missed that on initial visual inspection? Oh dear. Great fun though, following your subsequent logic!

Good advice just one problem, most of us don't have a scope lol...

Hi, are you in the UK??

During the visual i noticed that lots of components were desoldered. If i am to start with signal checking after verfying the power supply i will start at the output and go backward checking the inputs. Desoldering should not be performed until the faulty component is positively identified.

1:00 Broken solder joint .... or cracked circuit board.

Good explanation with ckt diagram , but what about without ckt disgram

Very good my friend! What is your native language? Stay healthy.

How do you get the schematics Sir?

2021 problem 2022 no problem

well what if you're trying to fix a random board with no schematic where you don't know the expected values? the video tells nothing about that 😐

Aha

in africa we replace the board at once

I think this guy went to the Italian university "Wossamotta U"

Appropriately named channel for somebody that didn't discharge a large capacitor after unplugging board from wall outlet

Like most youtube video U talk about everything that do not matter.......did u forget to tell about your cat and your grandmother

What is you contact

I spotted you, ,,