Electronics > Repair

Gopro Hero 8 black water damage repair help??

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RP:
Hello there,
I got a Hero black 8 badly water-damaged and sat like that for a month.
It seems the water penetrated fully and damaged the PCB. corrosion can be seen all over the PCB connector. I have attached some pictures for reference.

Same back story, I have recently moved country so I do not have my electronics lab, tools, or equipment with me :-\ all I have is a screwdriver set and a multimeter ;D.
So here is my plan first remove all the corrosion from the PCB using some common housing holds items like IPA and vinegar then check for short.

Is there any other chemical that can remove the corrosion safely??

cold_zero:
First off, you gotta remove all the covers.

Second, in my country, I use hot thinner or alcohol 99% to clean the board. You can either brush it for a long time or use an ultrasonic cleaner.

Then, dry the board with hot air. After that, apply flux and use the right amount of heat to melt and spread it under the IC, re-balling the solder balls.
Be careful of high heat on the processor or flash

Finally, before you power up the board, you need to check the traces and make sure there's no short circuit.

flolic:
Don't even bother to fix that, it will never work again.
Speaking after 10+ years of experience in camera repair business.

wraper:
^I repaired quite a bit liquid damaged phones in the past, does not look unfixable to me (the question is if it's worth the time and effort). However you'd need ultrasonic bath and experience soldering tiny stuff. Likely you'd need to remove some micro BGA.


--- Quote from: cold_zero on June 08, 2024, 06:26:18 am ---Second, in my country, I use hot thinner or alcohol 99% to clean the board. You can either brush it for a long time or use an ultrasonic cleaner.

--- End quote ---
Using alcohol for that is counterproductive. It does not dissolve salts/corrosion. Not to say it's dangerous to use in ultrasonic baths and their manufacturers prohibit it if you read the manual.
https://www.omegasonics.com/how-to/ultrasonic-cleaners-dos-and-donts/#:~:text=Never%20fill%20the%20tank%20of,or%20any%20other%20flammable%20liquids.

--- Quote ---Never fill the tank of an ultrasonic cleaner with alcohol, gasoline, or any other flammable liquids
--- End quote ---
Needs to be water based cleaner solution, citric acid solution may work well enough if you don't have anything better (may damage the board if held for too long or concentration too high).

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