Checking voltage that way won't show a drop unless you put a load on it.
  I check mine at the radio all the time, just plug the leads into the 
back of the power cord.  No danger at all.  You need to check voltage 
under load.
73
Butch
WA0VJR
Node 3148
Wallace, ks.


On Thu, 29 Dec 2011, Steve Forst wrote:

> Don't play with fire.  Don't mess around with the service menu.   Unplug
> the power cord from the radio and measure the voltage.  After passing
> through the cable between ps and rigrunner, the rigrunner itself, and
> the cable from rigrunner to radio, you should see even lower voltage at
> the radio end.
>
>
> Be sure  the ps connections are good, the power pole into the rigrunner
> is in good and the fuse on that power pole as well.  There is a voltage
> adjustment inside the Astron if you need to  pump up the juice.
>
> Low voltage may well be your problem, but you should get the XYL to
> check power  levels on the meters of the amp or tuner, just to see how
> things compare with the TW-1.   You may wind up getting 3 different
> readings, but worth a look anyway.
>
> 73, Steve KW3A
>
> On 12/29/2011 7:15 AM, Tom Behler wrote:
>> Hi, all.
>>
>> Last night, I was working with my TS590, and I found that it only
>> seems to put out a maximum of about 65 or 70 watts when I connect it to a
>> dummy
>> load, or when I key the rig on a resonant frequency for one of my
>> antennas.  These power readings were taken with my TW1.
>>
>> I have checked the integrity of all of my internal coax jumpers, so that
>> shouldn't be a contributing factor.
>>
>> I took DC voltage readings from my Astron RS35 power supply with my Omega
>> talking multi-meter, and  found that
>> the supply voltage is 13.350.  This voltage is lower than the 13.8 volts I
>> would expect, which is causing me to wonder whether the supply is starting
>> to fail.  Low voltage is what could cause the rig to fold
>> back, so I'm wondering if that is what is happening.
>>
>> Another thought I had was whether the problem might somehow be related to
>> the firmware upgrade I
>> just did?Specifically, I upgraded from firmware version 1.04 to 1.06 this
>> past Monday.  I can't absolutely swear to higher output power readings
>> before the firmware update, but I do believe they were higher--i.e. closer
>> to 90 watts or so before the update.
>>
>> Is there a service menu adjustment for power output that I might check?  I
>> could probably get sighted assistance  to help me with that if I had some
>> detailed
>> instructions as to how to get there.
>>
>> Just for the record, I took all power readings with the auto tuner off, and
>> the tentech
>> manual tuner in the bypass position.   I took the readings  in both RTTY
>> mode and by pressing the "send" button on the rig's front panel.
>>
>>
>> 73 from Tom Behler: KB8TYJ
>>
>>
>>
>
>