Strange XV RSM issue

[mbnv992]

So I have an older ( discontinued prior to the “XVP mics came out ) model XV PMMN4145A that has an odd issue - on my current firmware APX8000 when you turn the radio on with the mic attached all the buttons work ( the volume toggle, one dot, two dot PTT etc etc ) they all work great. About an hour or two later with the radio being on - all the buttons EXCEPT the PTT no longer work. You have to restart the radio and they all work again. Then same thing - 2 hours or so later all the buttons except the PTT don’t work.

I do have a newer XVP830 mic and that mic acts fine but I’ve never heard of this issue with this older XV mic. Is this why they were discontinued ? Any recommendations for a fix ? Mic sounds fantastic it’s just the buttons don’t work after a certain amount of time. I checked the connector and everything seemed fine with it. Same with the coiled cord.

 

[Tech21]

Try getting a replacement cable for it.

 

[mbnv992]

Ordered this cord since I couldn’t find an exact cord match for this model numbered mic. It looks to have the same connector as this mic so I hope it work ( part numver 3075336b17 )

Motorola 3075336B17 Replacement coil cord

Motorola 3075336B17 replacement coil cord for APX remote speaker microphone HMN4104, HMN4103,HMN4101

www.magnumelectronics.com

What’s the verdict, you guys think this cord will work ?

 

[K2NEC]

According to the data sheet, the proper part number for the XV RSM replacement cord is PMKN4260

 

[mbnv992]

That would made sense since that mic cord goes to the XVP830/850 series. Well - it’s too late to cancel the order I placed so I’m hoping it’s a “plug and play” since the connectors look the same but the one I ordered has a shorter cord.

 

[mbnv992]

So - another update. I also ordered the PMKN4260 cable as well. Before that got here I plugged in the 3075336b17 cord and it works ! Only thing is - same issue - after about an hour the mic buttons stop working except the PTT.
Plugged in the new PMKN4260 cable - same thing. Works for about an hour then nothing but the PTT works. So - this is definitely a defective mic head and not a cable issue.
Oh well - these mics I believe were recalled anyway wonder if this was one of the reasons they were recalled ?