Hello all ,
I got an old bluetooth keyboard that requires 1.5V AA battery supply. Once the battery is inserted, a red light indicator turns on and suddenly turns off. There is no any on/off switch in the keyboard. Also, in my laptop, a bluetooth keyboard is not showing. How can I turn on this keyboard? Is something wrong with the circuit of the keyboard? The only circuit available in the keyboard is attached below.
It may have stored connection data for a previous device, so not be doing anything if it does not detect that.
Try holding the power button in for anything from 10 to 30 seconds & see if the light starts flashing - that probably means it's in "connect" mode and should be detectable by your laptop.
Or try keeping the button pressed while and after fitting the battery; that's another reset method some devices use.
Or method 2, wait a minute then try method 1, or method 1 twice in a row..