Use Basic Electronics Knowledge To Repair Industrial Electronics - Pure Methodical Fault Finding

This is where our basic knowledge of electronics eventually takes us. Pick up a faulty PCB that you know almost nothing about, apart from maybe it's basic function and use a mixture of intuition, a general understanding of electronic components and circuits, a touch of voodoo and a bit of luck and you have a very good chance of diagnosing and fixing the problem. This is where the money is guys, learn to do this sort of repair and you will find that working on this sort of equipment can be very profitable and also very fulfilling. Watch, learn and enjoy

Part Two is here

I work in collaboration with:
The Electronics Channel (with Carlos and Detlef)

Gran Canaria Uncovered

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Equipment used in my videos. These are affiliate links, you pay the normal price and I make a small commission.

TEST METERS
Aneng AN8009
KM601
VC480C+
MESR-100 ESR METER
XC6013L CAPACITOR METER
TM-902C TEMPERATURE METER
FNB58 USB ANALYZER
PCI POST ANALYZER
TL460S Plus PCI_E ANALYZER
MULTIMETER PROBE KIT KET05
OSCILLOSCOPES
FNIRSI 1014D
FNIRSI DSO-TC3
FNIRSI DPOX180H
BENCH PSU
NPS3010W
SOLDERING
T12 Station with M8 9501 Handle
SUGON T26D
QUICK 861DW
PROS'KIT SS-331H
THERMAL CAMERA
Infiray P2 Pro
MICROSCOPES
Amscope Optical Microscope (copy)
ANDONSTAR AD407

EEPROM Programming
TL866 II+
CH341A

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Thank you
Richard

[theoldplace]

My 4 month old daughter loves your videos. I was watching one night when I thought she was asleep, but turns out she was just really focused on the video. Since then any time I put your videos on she quiets down and watches. Hopefully she will keep interested and she can move up to helping me at the bench when she gets older.
Your videos are great. showing the troubleshooting process and sharing your experience is more valuable than most the education I got from school.
Thank you from me and my daughter and please keep releasing these great videos.

[JustinBellingerTV]

Great episode, very handy techniques and approach. Many years ago I did my C&G 224 Pt 2 (and 3), while also studying my ONC and HNC in electronics. As you can guess from formal education, we never did much in the way of fault finding without a circuit diagram - which I now appreciate *can* make it easy. Your approach is methodical, experience-based and highly successful. No diagrams required.
Thanks for sharing.

[cosa-nostra]

I love what you are doing please keep it up. I have recently picked up this as a hobby and your method of explaining your train of thought as you approach each project is nice and very informative.

[USA-GreedyMenOfNoIntegrity]

love it. great teacher. Looking forward to part 2. See you tomorrow night.

[ralphj]

Good analyses. Glad that electrolytic went, the bottom end, although partially-sleeved, was overhanging the out 2 pin on the H-bridge.

[christopherhurtle]

Love your content been binge-watching all of your episodes I wish I was watching them in order I have just started getting into electronics repair I have been doing industrial maintenance for over 15 years I want to broaden my knowledge of the equipment I use

[TheCoolest]

I've designed a similar motor controller before and your drawing of the circuit at the end seems about right.

[roboandrew]

Thank you that was thoroughly appreciated short finding is not my strong point but enjoyed your methodical approach

[barnyardstory]

One tool I find very helpful is a spade type soldering tip. I have a few Hako dual head units that have different tips, one is 30mm wide another is 12mm wide etc, they are pricey unfortunately but they are time savers too. You can heat 2 pins or 12 pins all at the same time (I hate heat heat guns) and the component will just drop out of the board (hopefully), this works well for in-line bridge rectifiers, which I replace a lot of. I've been doing this stuff for 20+years and am always learning something from your videos. You are a good instructor.

[allelectronicsrepairs]

Hi Richard, another good tutorial. One very good method to protect any easily meltable parts is using sel-adhesive aluminium foil (tape). Works much better than Kapton tape and is easily removable afterwards. Regards, Jerry.

[mike-ypuk]

That's how to make it look easy. You inspired me to invest in a component dca75. This work offers moves like a chess game. Test and gather data, analyze and make a move. Then try to understand why. This is far from boring. Thanks for all you valuable insight and procedures. I'm investigating in equipment because I want this to be my new hobby and I will never give up on it, regardless of all it's challenges. Being an auto mechanic with all it's challenges didn't deter me and now I have the hobby I have been looking for. Many thanks for your inspiring work.

[viniciusvbf]

Very nice!! Just a quick tip, if I may: low melt solder to remove those SMD components works like a treat! You don't even need the hot air after using it. Cheers! :)

[Dutch_off_grid_homesteading]

Heya lol this is part 1 and part 2 I already saw now it's a lot momre clear what you were talking about in part 2 lol

[anthonydenn]

Nice job finding the short Richard. Might be a waste of time replacing that part if the motor is dodgy though, as you said.

[SolderBrothers]

Trying to get to do more of this on the bench. Do this every day with the whole machine still attached. Cheers!

[miosz]

Hi Richard, i have a question to you :). Do PSU have influence on a GPU coil whine? Understandable if it was low quality PSU with unstable voltages etc. but i read on forums that people had corsair rm850x and after change on straight power 11 coil whine was ended... How to explain that?

[hullinstruments]

9:00

If I remember
Usually things I see in that package and with that green color are inductors. I run across them quite often... But I know there are also resistors and other things in that package such as glass diodes etc....

[CXensation]

H-bridge (full bridge) motor driver.
Usually the motor is connected between the 2 outputs which gives easy control of motor direction w/o clonky relays.

[hervedonner]

Nice one, I'm just wondering if injecting voltage on that diode would have helped identify the driver immediately in this case without having to remove all the mosfets.

[norddine]

Salam hello sir please I want the links for finding datasheet equipment, electronic