GSM-Forum - Fixed - iPhone X Won't Turn On - how the Thermal Imager is used in Repair

Rosin and the freeze spray are the two commonly used and low-cost methods for faulty components locating when repairing logic boards. Still, you can use the Thermal Imager instead for more efficient repair work if the two methods become time-consuming. Check below and you will be surprised at how the Thermal Imager is used in iPhone X won’t turn on 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.
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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.
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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.
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4. Let’s replace with a new capacitor. Assemble the phone and test. The phone turns on normally.
https://d3nevzfk7ii3be.cloudfront.ne...hujqW3M.medium

Here is the video

Credit: REWA Technology