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PCBWay 3D Printing and Fabrication: https://www.pcbway.com/rapid-prototyp... Repair of the Cambridge Audio DacMagic Plus DAC. When powered up, it produces a high pitched noise from the analogue outputs. After some time or multiple power cycles it may behave normally. In this video we observe the fault, explore the causes and resolve the issue. A ST1S09IPUR DC-DC converter is responsible for providing a regulated supply to the DSP. C148 is often replaced with varying levels of success, but C179 on the input to the DC-DC converter is at fault. Support the Channel with Patreon:   / sdgelectronics   ---------------------------------------------------------------------------------------------------------------------- 0:00 Introduction and Overview 6:49 Initial Troubleshooting 11:16 Rework of the PCB and Analysis 17:19 Confirming the fixes 18:52 Overhaul of other components 21:21 Final 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