SIM900A gsm module is switching off automatically.

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shivakumar.r

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Dear friends,

I use SIM900A in my project.My problem is once i switch on the GSM module using POWER KEY,it will be on for 1 or 2 minutes but after this GSM module is switching off automatically...
Please help....
 

Hai,
Are you pulling down the voltage for 2-3 sec or just pulling it for a long time?
 

ponnus said:
Hai,
Are you pulling down the voltage for 2-3 sec or just pulling it for a long time?
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Thanks for the reply

I am pulling it only for 3 seconds and releasing it.... Gsm module will be working for 1 or 2 minutes but after that it just switches off....
 

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