Hello, I have a problem with a wemos d1 mini board. Namely recently the board accidentally got a 9v voltage in the usb and is not booting. Is there any point and possibility to repair the board? .

Does it not start up at all or is there just no communication? Your best bet is to connect 3.3V to the ESP module and see if it's alive. Maybe only the stabiliser is damaged, or the diode on the USB input (I have had a rectifying diode on a regular modemc fail there more than once during testing).

A tile costs between 15 and 25 PLN. If you think you can fix it in 10 min it makes some sense, after 30 min you are on the edge.... On the edge of the hourly rate at Amazon.... To simplify, the conclusion is that we've lived to a time where it doesn't pay to dabble in junk, so you'd sooner make those 3 grand in an hour at the poorhouse than fix that module .

Can the Wemos D1 mini chip be repaired when 9V is applied?

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#1 19127426 20 Dec 2020 20:47

Frank7472 Frank7472

Level 4

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Post #1
19127426 20 Dec 2020 20:47

Hello,
I have a problem with a wemos d1 mini board.
Namely recently the board accidentally got a 9v voltage in the usb and is not booting. Is there any point and possibility to repair the board? .
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#2 19127476 20 Dec 2020 21:15

sylweksylwina sylweksylwina

Moderator of Computers service

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Post #2
19127476 20 Dec 2020 21:15

Does it not start up at all or is there just no communication?
Your best bet is to connect 3.3V to the ESP module and see if it's alive. Maybe only the stabiliser is damaged, or the diode on the USB input (I have had a rectifying diode on a regular modemc fail there more than once during testing).
#3 19127485 20 Dec 2020 21:18

Kuniarz Kuniarz

Moderator of Designing

» | Helpful post? (+1)

Post #3
19127485 20 Dec 2020 21:18

A tile costs between 15 and 25 PLN. If you think you can fix it in 10 min it makes some sense, after 30 min you are on the edge.... On the edge of the hourly rate at Amazon....

To simplify, the conclusion is that we've lived to a time where it doesn't pay to dabble in junk, so you'd sooner make those 3 grand in an hour at the poorhouse than fix that module .

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