Great video but the hardest bit I can't get to grips with is how you know where to place the probes. +ve and -ve fine but having one probe at the top of the board and the other at the bottom doesn't really mean anythng to me, have you followed the circuit board to do this? I think I need to learn a level or two below this and then come back to this video.

Does this test method apply to transistors installed on the PCB?

Really useful video. Many thanks for creating it.

Okay

Where did this man go? He just disappeared.

Do you know if you can use a .22uf 250v instead of a .25uf 150v?

Do you know if you can use a .22uf 250v instead of a .25uf 150v? Please

Thank you, interesting and helpful. The background music however filled the empty spaces blending with your speech making it unnecessarily difficult to understand your words.

Thanku sir Good explanation

Ssuuppeerrbbb Thanku

isn't one test is missing - Black Led on Base and Red on Collector and Multimeter should give you an "OL" Over limit reading

It's too slow. The video seems ad hoc, not planned or scripted. So there was nothing to troubleshoot, nothing to fix?

at 40:37 you were doing the calculation for AC peak-to-peak that's the voltage differential between the maximum positive and negative peaks. When you convert peak-to-peak into DC only the positive (and/or negative) charges remain from zero to peak(not "1"). You likely had the non peak-to-peak AC voltage and to calculate that is just "AC Voltage=DC Voltage"(Not counting for efficiency loss.).

Woah woah woah stop. Don't just replace capacitors if they might be old. LOOK at them if they say Rubycon, Chemi-Con, Nichicon, or Panasonic you might want to trust them. If you take out my completely fine Nichicons and replace them with Wonhunglows from ali express I'll be ticked.

You shouldn't measure diode bridges in-circuit they can be crossed with a transformer that may give you incorrect readings.

Finally. Exactly what I’ve been looking for

Hi how are you doing I'm interested in this training couse how can obtain a copy of the programs

OL stands for Open Loop, thanks for the video, great to see how you think.

The only confusion is that the peeping sound shows continuity and no sound means a short circuit

facebook group link

sir which books to refer for indepth knowledge please let me know

good vid buddy

So, collector and emitter are giving me lecture (both positions), and I have a question, is it common that these type of of transistors manage the signal of 12 volts that activates the relay in order to make a motor work? By the way I already tested the relay and it is ok, but no 12v signal, suspicious #1 NPN transistor!

What is this shit! Is this a con???

Thank you for the video

do you have anything on how to troubleshoot TV power supply down to component level ?

Bravo from France. So clear, good explanation and practice👍

i have been repairing and referbishing for years. I want to learn how to solder better and how to "Stab" with my meter. Would this be any help?

Thank you so much. It is so hard to gain experience when every job in my state requires experience. This may not count as a job experience but at least I have an opportunity to gain personal experience thanks to your course.

How can I connect with you

Hi can you tell me how to troubleshoot a non-polarized circuit board for a paper shedder that will only go in reverse and wont shred paper tks

It hard to explain why I am studying this stuff but I am deep into it, I have an Idea like a Lego set snap on connections really simple and cheap components people will soon be into it, making their own but like Ford sadl I give away my cars cheap make money on my parts same Idea the shell of the computer the owners creation but your parts, I hope I gave you ideas thanks again

I really needed this, thank you, as I am learning I think about making my own I got caught up in programming hardware software, but not able to organize it all together all books I read not quite understanding them fully trying to memorize them all only to forget a few months down the road I get flash backs of what I have read. I do get flash backs of what I read though, this video is amazing what I was looking for thank you (gush shu bay ) meaning thanks

Excellent video!!!! Nicely explained

My main multimeter is a Fluke 77 II. 30 years old and STILL in calibration. Awesome piece of kit.

Keep on pushing God can blessed you

Painting makes it painful to watch. Waste of time.

Can you do a control board for a residential a c unit.

The first thing is used your 5 sence, seeing, smelling and hearing.

Get to the poiñt bitch

Thank you so much for such great work🙏

zoom in please D":

Please I am Mr. Robert Asiedu from Ghana West Africa and I have a NIKKO AMPLIFIER which the sound output is not working can you help me fix it?

I can now test transistors with confidence after watching your informative video, thank you.

A most excellent presentation. Very clear and beautifully presented.

Bro as a fresh graduate, thank you. I wish I had a lab instructor that would’ve taught us in this format. Very practical knowledge.

Useless information

Worse tutorial ever.

I had an old guy tell me to make a dumb azz map before you remove a bunch of wires but video works too🤣

Thank you for the video. New subby. You RoCk. p.s. OL = Open Loop (derived from the now defunct telephone circuits of yesteryear). Cheers from So.Ca.USA 3rd House On the Left