When Xbee S2C is connected to adapter, associate led is half bright and Xbee is not being detected

We were using Xbee S2C in our project . Today it suddenly stopped receiving data.
So when we checked it using adapter , the associate led was not blinking and was very less bright(but for other Xbee it is glowing in proper brightness).

And Xbee S2C is not being detected by XCTU and we have checked the discovery option completely (ticked all and we checked , still not detected).

Please can you help in recovering the Xbee.

i had a problem like yours with my xbee (no working and led very less bright) solution: power source too poor , voltage unsufficient, i replaced it and back to fine working
hope it will be same for you