Is there a wireless microphone for the Everio model G2-MS-230BU ?

It sounds as though the frequencies are not matched up. Check the owners manual. This has happened to me a few times.

Contact your local service center directly or online here:
https://en-us.sennheiser.com/service-support-contact-center

This isn't a solution. But after I've gotten into my microphone with the same issue using a torx screwdriver I found that I (Electrical Engineer) don't have the proper equipment to fix the issue. Roughly 100 dollars (Flat rate) and a send off to Sennheiser is your best bet.

Hi,

Often the rubber button is pushed into the microphone.
You can easily disasemble the unit.
Just open the batterycase, you will find some small torx screws.

Regards,
Gerard

You'll probably have to send it to Sennheiser USA.

Hi,

To repair the on/off switch of the handhelt it would cost abt 15 minutes and $2,00 for the switch.
So that would be $20-25.

Reagrds Gerard

Call Sennheaiser. They can help you troubleshoot.

Call Sennheiser. They can help you troubleshoot.

This is probably interference in the wireless connection for the lavalier mic.
Try switching channels to find a clear one!
Or switch to a wired lav mic if that's practical.

For audio expertise and PA system help with feedback and noise, try our new DVD "PA Systems for Small Groups" at www.whamuniversal.com

I regularly use G2 ew100+300 systems, which have a manual squelch adjustment on the reciever. Squelch is difficult to explain but here we go: a squelch adjustment gives you the options LOW, MEDIUM, HIGH these settings effect transmission distance and interference rejection. for example: a HIGH squelch is less prone to interference but has a shorter transmittion distance. A LOW squelch is more prone to interferance but allows for a longer transmission distance. For most applications, a MID squelch is fine. If this does not help- the next option would be to swap arials between units and see if the problem moves. The G2 series are a 30mw transmittion which has an effective range of about 50m
hope this helps.
Rus.