Use Basic Electronics Knowledge To Repair Industrial Electronics - Pure Methodical Fault Finding Pt2

Part Two 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. Here is the conclusion to this two part repair. Watch, learn and enjoy.

Part One 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 MULITIMETER
KAIWEETS HT118E MULTIMETER
VC480C+ MILLIOHM METER
MESR-100 ESR METER
XC6013L CAPACITOR METER

TM-902C TEMPERATURE METER
LCR-T4 COMPONENT ANALYZER
FNB58 USB ANALYZER
PCI POST ANALYZER
TL460S PLUS PCI_E ANALYZER
TOOLTOP ET120MC2 SCOPE
FNIRSI 1014D SCOPE
NPS3010W 30V 10A PSU
T12 STATION WITH M8 9501 HANDLE
M8 9501 HANDLE
YIHUA 982 Soldering Station C210/C245
FNIRSI HS-02 PORTABLE SOLDERING C210/C245
QUICK 861DW
PROS'KIT SS-331H

INFIRAY P2 PRO IR CAMERA + MACRO LENS
TOOLTOP ET13S THERMAL CAMERA METER
ET13S MACRO LENS
OPTICAL MICROSCOPE
TOMLOV TM4K AF FLEX
TL866 II+ PROGRAMMER
CH341 PROGRAMMER
NC-559-ASM FLUX

DESOLDER BRAID (I use size 8045)
HX-T100 SOLDER (0.6MM)
ESD-11 TWEEZERS

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Thank you
Richard

[hullinstruments]

As someone who has done this type of work full-time for several years now... Your channel really is a gold mine. They're really just weren't many people troubleshooting industrial electronics and documenting get regularly like you do on your channel. Don't get me wrong... We can all learn from folks like mr. Carlson, big Clive, Marco reps, diodegonewild.... And many others. But just one or two of your fault finding videos covers more information than most of those guys in tire channels combined. I obviously learn tons from watching troubleshooting involving radios, receivers, and random stuff Clyde picks up at the dollar store.... But since I only deal with industrial boards and metrology get INFINITELY MORE thought-provoking info pertaining to what I work on everyday... Then some of the aforementioned channels combined. You're really filling a niche and doing it so well and so regularly... And also building a community of like-minded folks that just weren't congregated and engaged on YouTube prior to your channel

[dirkk]

I'm working with electronics for more then 40 years now, i have made many thousands repairs...but when i'm looking at the skills of you Richard i feel realy stupid . Respect !

[johnthomson]

A outstanding display of component level repair skills par excellence. Bravo and thank you for sharing a lifetime of knowledge.

[SvTL]

Never skip your videos, no matter how long they are, always very interesting, helpful, educational.. Thank you!

[escheytt]

Look forward to all of your sessions. I am a retired senior citizen and love to learn from you now, as I could not in the past years. Best regards.

[petersvideofile]

Awesome video! The thing I learned from this video is don't stop when you find the first problem. Keep looking for related problems. Then try to think what externally faulty condition might have triggered the failure, or once you return the fixed unit it might break again immediately :) thanks!

[CliveChamberlain]

I'd love to hear your history someday on "The Amp Hour" podcast with Dave Jones or Chris Gammel 👍

[Telectronics]

I probably would have gone and desolder every part that is near a short circuit but your current injection and IR camera trick is really awesome ! It saves much time. Never thought this way about it ! Thank you very much !😄

[wasteoink]

I wish wasa your side watching and learning but this is the second best this. Thanks a bunch I know all the basics but what you are so good at is showing how intuition is working with these things. And you are old enough not to be embarrassed by the eventual failures . thanks again

[rafaellarios]

Thank you for a well done troubleshooting video. Greetings from Monterrey, Mexico!

Your observation about chicos and chicas is correct. That's the way Spanish language is structured. You can have one boy and 100 girls and they would still be called "chicos."

[anthonydenn]

Nice job Richard. Another amazing video, I thought the board only had the one fault. Great job tracing all the other faults out. I'm guessing that was a crow bar circuit, with the zenner and what looks like a TVS diode.
And those small looking resistors aren't resistors, they are coils, iirc.

[PurityVendetta]

Just going to say that I've learned more from this channel than any other. The methodology is priceless and as you say I need to build up my experience. I actually believe that the train of thinking, how circuits are built and the required train of logical thought will come.
Thanks.

[kongcharathpanawattanawong]

Thank you for your knowledge and experience giving to this world.
I really love to see to the end and I am going to watch it again.

[davidhollfelder]

This was another super good video, and entertaining as well. Bummer that this one got “baked”.
Excellent decision to keep running down the rabbit hole, finding out it’s not repairable, before spending any money on parts, and fail, trying to repair it!
Karma for the future.

[will_doherty]

Very good pair of videos - nice to be able to watch your thought process whilst troubleshooting an unknown board. Unfortunate that it wasn't repairable - do you levy a diagnostic fee in such as case? I assume that you must, otherwise it's a lot of lost time from your day.

[Dutch_off_grid_homesteading]

Heya, learned a lot from your video's/vlog's but I know I have still a lot to learn some video's have to watch 2 or 3 time before I understand but it's never getting boring or something like that. If it was for me it good get even more in dept/ specialized. I'm even intrested in a deep explanaction about your oscillocoop ( I mean what all the buttens are for) never had that. thank you so much

[andymouse]

Great ending ! I know not the perfect ending but top draw educational stuff !....cheers.

[surgingcircuits]

Very good work, and excellent advice. Thx!

[monad_tcp]

3:46 police is never going to be able to tell I'm driving with flip flops on my pocket. muahahaaa I'm evil !

[brianmcdonald]

Great video. 👍🏻 out of interest What would cause intermittent continuity between live and ground on a PCB I get beebing instead of constant tone?
Thanks