For others having this issue, my only solution was to warranty out the microphones. I have found on using them after this that more frequent battery changes seems to help keep this from happening perhaps.
I had the same problem and solve it. You are doing it Wrong way. Must turn off the receiver and mic. 1st step press power and frequency button at same time until it blink. 2nd step turn on the receiver. 3rd step press the frequency button on mic Just one time and will stop blink. The frequency that you have on mic will apear on receiver. Thank me later.
I had the same problem and solve it. Must turn off the receiver and mic. 1st step press power and frequency button at same time until it blink. 2nd step turn on the receiver. 3rd step press the frequency button on mic Just one time and will stop blink. The frequency that you have on mic will apear on receiver. Thank me later