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Xinyuan-LilyGO / LilyGo-T-Call-SIM800

https://www.aliexpress.com/item/33045221960.html
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Board could not reset on power #56

Closed dzungpv closed 4 years ago

dzungpv commented 4 years ago

I have 4 boards, but 1 could not auto reset after power, must manual press the button or it will not work both the EPS and SIM800, i check the EN circuit but it is normal. How to repair the unit?

lewisxhe commented 4 years ago

Have you solved this problem? If it has not been resolved, please let me know, otherwise please close this question

dzungpv commented 4 years ago

Have you solved this problem? If it has not been resolved, please let me know, otherwise please close this question

It not solve, i have 4 but only this one. Try replace the resistor but not work

lewisxhe commented 4 years ago

Can't reset automatically on power-up. Generally, the automatic reset circuit is broken. Please check these two components. reset