how to test a bluetooth module?

I have a problem with my bluetooth module. I have interfaced it with my arduino board and it was working properly, but now all of a sudden it is not working at all. The led which ensures that it is turned on is not blinking neither my cell phone is searching it.
Please help me to find out t he exact problem as i want to be sure before buying another module.

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tnagchandi (author) 3 years ago
see 3.3v on my board is circled...
So which BT module have you GOT and which pin did you connect it to ?
tnagchandi (author)  steveastrouk3 years ago
Vcc to 3v3
Gnd to Gnd
Rxd to Txd
Txd to Rxd

bluetooth module was arduinoBTmodule
Its dead.
Check you really, really have power on the pins of the module. If you do, bin it. These modules often run on only 3.3V, not 5, and if you have interfaced it to the arduino, you could have simply blown it.
tnagchandi (author)  steveastrouk3 years ago
but we have 3.3v on arduino board as well
Did you use it ? Are you getting the correct voltage on the board's pins ?
tnagchandi (author)  steveastrouk3 years ago
yes i have verified it on multimeter it is 3.3 volts
ON the BT board ? If its present, and the power on LED isn't lit, you've killed it.