Finding a short can be a little tricky sometimes, but in this video, I'll walk you through the whole process of detecting a short & injecting voltage to find it.

We use a Seek Compact Pro + our Macro Lens to find it.

Seek Compact Pro: [ Ссылка ]
VCC/Profixerr Macro Lens: [ Ссылка ]
Custom Thermal Cam Stand: (Coming Soon)

First step is to plug in the USB charger & observe what does the USB Charging current show. A working device will show about 1A or more

Then disassemble & disconnect the battery & check USB charging again.

Run a Tristar Test to see if it shows a Tristar fail
ICC Pro (Thanks @RESQREPAIR): [ Ссылка ]

Then probe the caps around PMIC and see if you find a diode mode reading of 0.000V. If so, you have a short.

Then inject 4.3V/2.5A into VCC Main & use the thermal camera to see what heats up. It is usually a shorted capacitor that will light up in the thermal camera.

In most cases, you can just remove it. In my video, it was a very large capacitor, so I replaced it from a donor board.

Then test USB Charging again & see if it boots up.

If you need any microsoldering repair or data recovery service, feel free to contact us directly to get a quote: [ Ссылка ]

B2B Pricing available for repair shops. Contact us for more info.

🔧Here's some of the tools & supplies we used🔧
✫ Fluke 115 Multimeter: [ Ссылка ]
✫ Parco Microscope Complete Kit: [ Ссылка ]
✫ Hakko FM203 Soldering Iron Station: [ Ссылка ]
✫ Quick 861DW Hot Air Station: [ Ссылка ]
✫ Amtech 559 Flux: [ Ссылка ]
✫ Amtech 560 Flux: [ Ссылка ]
✫ Solder Wick 454: [ Ссылка ]
✫ Kester Leaded Solder Wire (183C): [ Ссылка ]
✫ Mechanic Low Melt Solder Wire (138C): [ Ссылка ]
✫ KORAD KA3005P DC Power Supply: [ Ссылка ]
✫ Multimeter Fine Tip Probes: [ Ссылка ]
✫ Banana Plug Extension Cable for DC Power Supply: [ Ссылка ]
✫ Power Z USB Meter: [ Ссылка ]
✫ 2UUL 3D Tweezers: [ Ссылка ]


🔥🔥Support the channel & check out the links below🔥🔥

✫Buy some VCC Board Repairs Merch! [ Ссылка ]

✫#Microsoldering Tools we use & recommend: [ Ссылка ]

✫Buy Our Seek Macro Lens: [ Ссылка ]

✫Join us in the #Profixerr 90 Day Microsoldering #Course: [ Ссылка ]

✫Join our new Facebook Group for anyone who does Phone Repair: [ Ссылка ]

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