SDG #351 eBay NAD Hybrid Digital Amplifier D 3020 V1 Repair - Won't power on (Hypex UCD102 Class D)

PCBWay 3D Printing and Fabrication: https://www.pcbway.com/rapid-prototyp... Repair of the NAD D-3020 Hybrid Digital Amplifier which does not power on. The power LED illuminates orange in standby. When powering the unit up, the front flashes 5 times followed by a red standby light, then back to orange. Repair of the power supply and the Class D Hypex UcD102 amplifier board with blown output transistors. Support the Channel with Patreon:   / sdgelectronics   ---------------------------------------------------------------------------------------------------------------------- 0:00 Introduction 3:48 Amplifier Architecture 8:14 Initial Troubleshooting 12:53 SMPSU Power Supply Troubleshooting 33:08 Class D Amplifier Board Repair 46:51 Reassembly and Testing ---------------------------------------------------------------------------------------------------------------------- Zigbee Stuff mmWave Sensor: https://s.click.aliexpress.com/e/_Dl7... Sonoff USB Dongle: https://s.click.aliexpress.com/e/_Dmi... Zigbee Hub: https://s.click.aliexpress.com/e/_DBp... ---------------------------------------------------------------------------------------------------------------------- SolderKing UK Made Solder: https://solderking.com/ SolderKing UK Made solder available at Kaisertech: UK JBC Distributor https://kaisertech.co.uk/ Discount Code: "SDG5" ---------------------------------------------------------------------------------------------------------------------- 3D Printers: Ender 3 S1 Pro on AliExpress: https://bit.ly/3Tfiz22 Geeetech Mizar S on AliExpress: https://bit.ly/3MN0c0M Artillery Genius at Banggood: https://bit.ly/32iG2dv Geeetech Mizar S on AliExpress: https://bit.ly/3MN0c0M Geeetech A20M at Banggood: https://bit.ly/2YooVll Geeetech A20M at AliExpress: https://bit.ly/3oBqo2I Geeetech PLA+ Filament: https://amzn.to/3gelSX1 Ender 3 V2 at Banggood: https://bit.ly/36lN8Ny Ender 3 V2 at AliExpress: https://bit.ly/3j1C2CO ------------------------------------------------------------------------------------------------- Soldering Tools and Equipment: Aixun T420D On AliExpress: https://bit.ly/3cQXXhh Aixun T3B on Aliexpress: https://bit.ly/3CHerj1 Aixun T3B on Aliexpress: https://bit.ly/3cDkWIY Aixun T3A on Aliexpress: https://bit.ly/30LDcgG AiXun T3A on Aliexpress: https://bit.ly/2VdRVhU Aixun T380 on AliExpress: https://s.click.aliexpress.com/e/_DmM... Yihua 853A Preheater: https://www.banggood.com/custlink/DGD... Youyue 946C Hotplate at Banggood: https://bit.ly/2MuLwqM Youyue 946C on AliExpress: https://bit.ly/374v3Tp Solder Paste: https://bit.ly/2E1P5jR Solder Flux: https://bit.ly/2MQn7we Quick 857DW+ Hot Air Station: https://bit.ly/2OWDvf4 T12 Soldering Station: https://www.banggood.com/custlink/3KK... AC Version: https://www.banggood.com/custlink/3GK... T12 Iron Tips: https://www.banggood.com/custlink/3DG... Daniu Tip Cleaner: https://bit.ly/31VHwWM KSGER T12-BCM3 Tip: https://bit.ly/2xgYXCQ ------------------------------------------------------------------------------------------------- Microscope Equipment: Eakins Barlow Lenses: https://bit.ly/3aBY5tR Eakins Black Microscope: https://bit.ly/2VEcYaW Eakins Camera Microscope: https://bit.ly/2x86hnT Camera Adaptor for Microscopes: https://bit.ly/2KBZQMQ Amscope Microscope Head (US): https://amzn.to/2YmZWNx Amscope Trinocular Microscope (US): https://amzn.to/2YdBE8k Amscope Trinocular Microscope (UK): https://amzn.to/2V8w9Gh Swift SS41-WF20 Binocular Microscope US: https://amzn.to/2VLWEpb Swift SS41-WF20 Binocular Microscope UK: https://amzn.to/2GYGYFV Visit my website: https://www.sdgelectronics.co.uk/ ------------------------------------------------------------------------------------------------- #ElectronicsCreators