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02-27-2020, 03:05 | #1 (permalink) |
Freak Poster Join Date: Jun 2017 Location: USA
Posts: 207
Member: 2730637 Status: Offline Thanks Meter: 101 | Fixed - iPhone X Won't Turn On - how the Thermal Imager is used in Repair 1. first, we need to check the boot current. The boot current is larger than normal value. The NAND flash chip and the area surrounding it are hot. Tips Since there are so many components on the hot area, we can locate the faulty component with the help of the Thermal Imager. 2. Put the motherboard under the Thermal Imager. Get the motherboard powered on. We can see clearly that C2647 is extremely hot. 3. Let’s remove C2647 and run diode mode measurement of its bonding pad. The measured value is normal. We can confirm now that C2647 is damaged. 4. Let’s replace with a new capacitor. Assemble the phone and test. The phone turns on normally. Here is the video Credit: REWA Technology |
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