LER #263 All you need to know about Switch Mode Power Adapters (Wall Warts) To FIX Stuff!.. PART 2. In this video we learn MORE about the Power Supply Circuit Schematics, HOW THEY WORK and WHAT GOES WRONG! We have some practical REPAIR examples with more COMPLEX faults. If you want to learn how to repair power adapters, this video, and part one, are exactly what you were looking for.

NOTE:
The Diode D5 at 02:02:07 tested OK

CHAPTERS
00:00:00 Introduction
00:01:04 Current Sense Resistors
00:05:09 Danger! Will Robinson
00:10:01 Practical Repair #5
00:42:13 The Instability Paradox
00:45:04 Testing The Feedback Loop
00:52:31 Ouroboros
01:17:45 Practical Repair #6
01:21:03 Practical Repair #7
02:07:05 Let's Go Round (The Waterwheel) Again
02:23:20 Epilogue

The ALL YOU NEED TO KNOW Series
*Resistors*
https://www.youtube.com/watch?v=ae-1qPx9Tww

*Capacitors*
https://www.youtube.com/watch?v=R9slJUqT6Ls

*Inductors*
https://www.youtube.com/watch?v=iOFmrR1E2s8

*Diodes*
https://www.youtube.com/watch?v=YW3jpiQ4xpA

*Zener Diodes*
https://www.youtube.com/watch?v=trjbHhLERic

*Transistors*
https://www.youtube.com/watch?v=GDDwTbM9DLw

*ATX PSU*
https://www.youtube.com/watch?v=GjZtZNssroE

*Amplifiers*
https://www.youtube.com/watch?v=0oWBcTTeMNQ

*MOSFETs*
https://www.youtube.com/watch?v=LNu00nMBaaQ

*Thermal Cameras*
https://www.youtube.com/watch?v=v6Ll2v1brT0

*Power Adapters*
Part 1: https://www.youtube.com/watch?v=IoSaaK71tGY
Part 2: https://www.youtube.com/watch?v=MlDqQpM-VFE

I work in collaboration with:
The Electronics Channel (with Carlos and Detlef)
https://www.youtube.com/@Theelectronicschannel

Gran Canaria Uncovered
https://www.youtube.com/@GranCanariaUncovered (with Detlef and Julie. Not electronics related)

Det Builds Stuff - https://www.youtube.com/@detbuildsstuff8128 (Detlef)
Retro Upgrade - https://www.youtube.com/@RetroUpgrade (Carlos)

For All Your PCB needs: free $5 discount coupon
https://www.pcbway.com/setinvite.aspx?inviteid=561767

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

TEST METERS
Aneng AN8009
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KM601
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VC480C+
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MESR-100 ESR METER
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XC6013L CAPACITOR METER
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TM-902C TEMPERATURE METER
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FNB58 USB ANALYZER
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PCI POST ANALYZER
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TL460S Plus PCI_E ANALYZER
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https://amzn.to/3ZERvOs
MULTIMETER PROBE KIT KET05
https://s.click.aliexpress.com/e/_DE7nAyB
OSCILLOSCOPES
FNIRSI 1014D
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FNIRSI DSO-TC3
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FNIRSI DPOX180H
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https://www.banggood.com/custlink/GGGtS1Yvso
BENCH PSU
NPS3010W
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https://www.banggood.com/custlink/3DDV8whE3j
SOLDERING
T12 Station with M8 9501 Handle
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SUGON T26D
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QUICK 861DW
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PROS'KIT SS-331H
https://s.click.aliexpress.com/e/_DDo9wKj
THERMAL CAMERA
Infiray P2 Pro
https://s.click.aliexpress.com/e/_Dmuj4a7
https://amzn.to/457PgEb
https://www.banggood.com/custlink/DDGPI7hRvU
MICROSCOPES
Amscope Optical Microscope (copy)
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https://uk.banggood.com/custlink/mKGy7e0yww
https://amzn.to/4675Qp0
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ANDONSTAR AD407
https://s.click.aliexpress.com/e/_Dl4xXrD
https://amzn.to/3PSQKxJ
https://amzn.to/48sxej4

EEPROM Programming
TL866 II+
https://s.click.aliexpress.com/e/_DlsAR1H
https://amzn.to/3RTCRB9
https://amzn.to/3LDu3Lu
CH341A
https://s.click.aliexpress.com/e/_Dk0W2Qb
https://amzn.to/48IZiir

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Thank you
Richard