electric shock from fingerprint sensor

[maxim123]

Hi, I am using Samsung A7 (2018), and today, I suddenly got a shock from the fingerprint sensor. I tested it repeatedly to see if it was not an accident, but it keeps on shocking. It doesn’t shock you immediately, but if I put my finger on it for a second or more, it starts to heat up and gives electric shock.
Is it because water went in or something? I am not sure about water going in, and there is no shock from other parts of the phone.

Thank you.

[Rustys]

Yes if it got wet the water could be causing a short making it possible to shock.

Bigger question is how long before that happening ruins the phone.

[maxim123]

Hi, I checked it again properly and see the paint peeling off in the middle part of the fingerprint sensor, is the fingerprint sensor without the paint a metal?
Can I use normal paint to cover it and make it work or do I have to replace it?

[Rustys]

Personally replace.

With paint you are blocking the reader from being able to see.

[maxim123]

Personally replace.

With paint you are blocking the reader from being able to see.

Thank you. Will take it for service I guess. I didn’t even know the fingerprint scanner could be replaced before, hopefully it isn’t expensive.

[Bruce]

maybe something clear and sticky - like sticky tape or adhesive clear contact.
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[PeterOz]

like sticky tape

anything you put over the sensor will interfere with i.
We use sticky tape to clean the sensors.