Hellow guys, Welcome to my website, and you are watching Small Switch Mode Power Supply Repair Guide - Consumer Electronics SMPS How To Fix. and this vIdeo is uploaded by Learn Electronics Repair at 2022-05-28T03:20:27-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
| Name | Small Switch Mode Power Supply Repair Guide - Consumer Electronics SMPS How To Fix |
| Video Uploader | Video From Learn Electronics Repair |
| Upload Date | This Video Uploaded At 28-05-2022 10:20:27 |
| Video Discription | LER #247 Let's have a look at the switch mode power supplies found in many consumer electronic devices, DVD players, Stereos, Radios etc. Learn how to diagnose and repair these circuits 00:00:00 Intro 00:00:59 Initial Tests 00:03:02 SAFETY FIRST!! 00:08:31 Reverse Engineering the Circuit 00:21:48 Understanding the Circuit 00:29:14 How It Works 00:38:41 Let’s Fix It 00:43:33 Epilogue NOTES at 26:06 This is NOT Chassis ground! This is hot ground, which is our reference point for measuring voltages on the high voltage side of the power supply. Do NOT connect yourself or any grounded equipment to this point! at 31:12 The reason for the 100 ohm resistor is not to act as a voltage divider in series with the 1M resistor as I explained in the video – it is actually to limit the current flowing through the Zener diode which would otherwise be destroyed at 36:23 If this capacitor is faulty it can cause a whole range of fault symptoms - as mentioned in the video: The faults include... Failing to start Starting once then shutting down until you disconnect mains power and try again Continuous pulsing/chirping Starts after several seconds/minutes Only Starts when cold/hot etc Unstable output voltages Other common faults not mentioned in the video include Short circuit bridge rectifier diode(s) Blown Fuse Short Circuit or faulty PWM Chip Open Circuit Transformer Primary Winding Shorted turns on the Transformer 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 https://s.click.aliexpress.com/e/_DdWIynN https://amzn.to/469ZgOS https://www.banggood.com/custlink/mD3HS7d3eA KM601 https://s.click.aliexpress.com/e/_DBwTp1H https://www.banggood.com/custlink/KD3FIwEK67 VC480C+ https://s.click.aliexpress.com/e/_DEYs6ix https://amzn.to/3Q3LEz7 https://amzn.to/46tmNdo MESR-100 ESR METER https://amzn.to/3tiy8hK https://amzn.to/3RwvejK https://s.click.aliexpress.com/e/_DmirIEj XC6013L CAPACITOR METER https://s.click.aliexpress.com/e/_DmXD5zN https://amzn.to/3t71Nul https://amzn.to/3LDdcbO TM-902C TEMPERATURE METER https://s.click.aliexpress.com/e/_Dm9GAtZ https://amzn.to/3LFzERv https://amzn.to/3PTwuvW FNB58 USB ANALYZER https://s.click.aliexpress.com/e/_Dmd8TR1 https://amzn.to/3tb1QW8 https://amzn.to/46oMn30 https://www.banggood.com/custlink/mKm5ZwYvbh PCI POST ANALYZER https://s.click.aliexpress.com/e/_DBssfzN https://amzn.to/46m9Gep TL460S Plus PCI_E ANALYZER https://s.click.aliexpress.com/e/_DnBVP1z https://amzn.to/3ZERvOs MULTIMETER PROBE KIT KET05 https://s.click.aliexpress.com/e/_DE7nAyB OSCILLOSCOPES FNIRSI 1014D https://s.click.aliexpress.com/e/_DEzZMVh https://amzn.to/3RxMFk1 https://www.banggood.com/custlink/KKGVIfyvQP FNIRSI DSO-TC3 https://s.click.aliexpress.com/e/_DC8Djz5 https://amzn.to/3RBsgdS https://www.banggood.com/custlink/Gm3FZThmNi FNIRSI DPOX180H https://s.click.aliexpress.com/e/_DBX7auf https://amzn.to/468oooT https://www.banggood.com/custlink/GGGtS1Yvso BENCH PSU NPS3010W https://s.click.aliexpress.com/e/_DDPJtbD https://amzn.to/3rxsuIf https://www.banggood.com/custlink/3DDV8whE3j SOLDERING T12 Station with M8 9501 Handle https://s.click.aliexpress.com/e/_DFVdrD9 https://amzn.to/3FdG8Ul SUGON T26D https://s.click.aliexpress.com/e/_DFxpWw3 QUICK 861DW https://s.click.aliexpress.com/e/_DDo9wKj https://amzn.to/3PBOKZH https://amzn.to/3RCSqNh 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) https://s.click.aliexpress.com/e/_DlhF4BV https://uk.banggood.com/custlink/mKGy7e0yww https://amzn.to/4675Qp0 https://amzn.to/459uvrY 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 If you would like to support this channel You can send donations https://www.paypal.com/paypalme/youtubeLER You can subscribe to Patreon https://www.patreon.com/learnelectronicsrepair You can click Join to become a channel member Thank you Richard |
| Category | Education |
| Tags | learn electronic repair | psu repair | power supply repair | school | lessons | course | training | free | diagnostic | troubleshooting | trouble shooting | PSU modding |
