Short to ground? What does that mean? And how do I fix it?
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In this video, we’ll show you how to:
✅How to diagnose a No Power device.
✅What does it mean when there's a short.
✅How to use a thermal camera to find a short.
✅How does a capacitor work.
✅How to inject voltage with a DC Power Supply
✅How to clear the short
✅Do I need to replace the shorted capacitor?
✅And more!
This iPhone XR doesn't turn on. It charges at 0.431A via USB. On a DC Power Supply, it draws about 0.700A via the battery connector. Usually that means there's a short on a main power rail, like VDD MAIN, VDD BOOST or sometimes SPKAMP.
In this case, it was a short on VDD BOOST.
Using a thermal camera, I was able to spot the shorted capacitor right away.
Watch the full video to get a full explanation on how this all works. Understanding this fundamental information will help you solve a large majority of No Power situations.
Comment below if you have any questions about how to deal with a short on the logic board.
Here's the tools I show in the video:
▫Parco Microscope Complete Kit: https://amzn.to/3qXrGb0
▫Seek Compact Pro: https://www.injuredgadgets.com/seek-thermal-compactpro-high-resolution-thermal-imaging-camera-for-ios/?acc=3d2d53e5sdfabcd70de24cc444935b887e6ac21
▫Seek Macro Lens: https://vccboardrepairs.com/buy-macro-lens
▫Fluke 115 Multimeter: https://amzn.to/2TUNS9x
▫#11 Scalpel Blades: https://amzn.to/3Bobnr4
▫DT880 Mini DC Power Supply: https://www.injuredgadgets.com/dt880-mobile-phone-current-maintenance-tester-current-maintenance-analyzer-for-iphone-6-6p-6s-6sp-7-7p-8-x-xs/?acc=3d2d53e5sdfabcd70de24cc444935b887e6ac21
▫Korad KA3005P DC Power Supply: https://amzn.to/3oSiSlQ
▫Extra Sharp Multimeter Probes: https://amzn.to/3CzbalL
▫Banana Plug Extension Cables for DCPS: https://amzn.to/3nDwlih
▫Shirt I wore in the video: https://merch.vccboardrepairs.com/listing/new-i-fix-phones?product=46&variation=2745&size=423
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