While I don't have a TMV-71, and don't have this issue, I do have a 
590.   The 590  always has power to it as long as the power supply is 
on.  It's just   "asleep" and  pressing the "on" button wakes it up.

73, Steve  KW3A	

On 11/2/2015 6:38 AM, Frank Ventura wrote:
> When you shut off the 590 is it really completely shut off. Meaning is the =
> power button a "soft switch" and the units still syphons off some current f=
> rom the supply? If so that could account for the dip in voltage to the othe=
> r radio. However I still think poor connections (power cord, fuse holder, e=
> tc) are the main culprit.
> Frank
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]] =
> On Behalf Of Steve Forst
> Sent: Monday, November 2, 2015 6:05 AM
> To: [log in to unmask]
> Subject: Re: tmv-71 issue
>
> Wonder if those  having this problem have the USB connected to the 590, and=
>    what happens if it is unplugged?
>
> Probably not related to the issue, but who knows.
>
> 73, Steve  KW3A
>
> On 11/1/2015 11:51 PM, howard kaufman wrote:
>> I have faroid chokes on the cables.  Who knows maybe taking them off=20
>> may help.
>> It gets curiouser and curiouser.
>> I get 82 watts out according to the lg1 watt meter with a 1.2 SWR.
>> With the ts-590.  I put that alone on the supply, tightened down the=20
>> nuts and with it alone I got a reading of 45 watts out with the same SWR.
>> Hooked up both cords, tightened down the nuts again and its back to 82=20
>> watts out.
>> Something very funny is going on.
>> I'll get the DC volt meter out another day.
>>
>>
>> -----Original Message-----
>> From: For blind ham radio operators=20
>> [mailto:[log in to unmask]]
>> On Behalf Of Tom Fowle
>> Sent: Sunday, November 01, 2015 10:48 PM
>> To: [log in to unmask]
>> Subject: Re: tmv-71 issue
>>
>> That's a weird one!
>> did you say you'd put ferite chokes on the cables? If not and you have=20
>> snap-on chokes about, might be worth a try.
>>
>> Can't be a voltage issue or the 590 wouldn't work. Kinda has to be R.F.
>> "It says here!" <GRIN>
>>
>> Tom WA6IVG
>>
>> On Sun, Nov 01, 2015 at 10:33:06PM -0600, howard kaufman wrote:
>>> Okay boys and girls, rather than listen to the end of that disaster=20
>>> in Denver, I disconnected the ts-590 from the power supply.
>>>
>>> The problem went away.  Now why and what to do?
>>>
>>> The problem stayed with the 590 turned off, and was still there when=20
>>> I disconnected the power cord from the ts-590.
>>>
>>> I had to physically disconnect the wires from the 590 for the problem=20
>>> to go away.
>>>
>>> Head in hands, rench on floor.
>>>
>>>
>>>
>>>
>>>
>>> Howard Kaufman MSW LCSW
>>>
>>>
>>
>