Troubleshooting EMC problem can be done directly in your lab before going into an EMC test house. Practical example in this video fixing Radiated Emission issue of a Flyback Power supply. Thank you very much Min Zhang.

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PDF presentation used in the video: https://mach1design.co.uk/ledradiate...
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More information: https://emccompliance.co.uk/

Chapters:
00:00 What is this video about
02:27 EMC precompliance setup in your lab
12:14 The first steps to try after seeing EMC problems
13:15 Shorter cable and why it influences EMC results
18:44 Adding a ferrite on the cable
23:32 What causes radiation
27:18 Flyback Converter / SMPS (Switching Mode Power Supply)
29:26 Using TEM Cell for EMC troubleshooting
33:04 Benchmark test with TEM Cell
35:02 Improving input capacitors
43:20 Shielding transformer
46:24 Adding Ycapacitors, low voltage capacitors
49:21 Analyzing the power supply circuit
54:30 Finally finding and fixing the source of the EMC problem
57:59 THE BIG FIX
1:06:11 Adding shield again, adding capacitors
1:12:13 The results after the fix
1:13:09 FIXED!


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