Samsung Galaxy Note 8 No Signal Issue Repair

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Samsung Galaxy Note 8 No Signal Issue Repair experience sharing

Version: N9500 (China)

Defect Phenomenon

No service when inserted with SIM card, cannot make phone calls.

Samsung Galaxy Note 8 No Signal Issue Repair

After receiving the cell phone, insert another SIM card to test. There do have no internet.

Note8 22

Then disassemble the phone and check the motherboard.

As we can see, some chips at the top of the motherboard have been fixed before.

SAMSUNG Galaxy Note 8 No Signal Issue Repair

Check the fixed chips again, no abnormality was found after an inspection.

Then we consider the issue might be caused by the U1007 RF IC. First, take it off with the hot air gun, and find there are some pads missing.

Note 8 44

samung Note 8 pa chip

So the phone might be caused by drop damage.

Clean and deal with the pads, jump wire to fix the missing pads.

Replace the chip with a new one.

samsung galaxy note 8 motherboard

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Assemble the phone and test.

Insert SIM card can be recognized, making a phone call and internet functions are all OK.

The issue gets resolved by replacing a new RF IC U1007.

Go to Android Phone Repair Course to Learn More>>

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REWA Academy

As an enthusiastic educator and expert in mobile technology, REWA Academy has dedicated its career to empowering individuals through technical education. With a keen focus on cellphone repairs, they have developed comprehensive online and offline courses at REWA Academy. Their expertise spans a wide array of areas, including iPhone repair training, phone hardware, software, and advanced troubleshooting techniques. Through their writings, they aim to demystify mobile technology complexities, making it accessible and understandable for both novices and professionals in the field.

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