I'm wondering if it's rf getting in to it as someone else experie3nced 
recently.
----- Original Message ----- 
From: "Butch Bussen" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, June 03, 2011 10:00 AM
Subject: Re: astron supplies


> If your voltage is dropping, I'd suspect the wiring or something else.
> If the power supply is dropping, there is something wrong.  Check it
> under normal load, and it shouldn't change.
> 73
> Butch
> WA0VJR
>
> On Fri, 3 Jun 2011, Lou Kolb
> wrote:
>
>> Thanks Steve.  Yes, it's a linear supply although I've never had occasion 
>> to
>> look inside of it.  Occasionally, the K3 shuts down when I key it so I 
>> need
>> to check for voltage drop and then see if it needs adjusted.  At least it
>> should be a fairly straight-forward problem to deal with and I do have 
>> one
>> of the old rad shack talking multi meters.  73,  Lou -- WA3MIX
>> ----- Original Message -----
>> From: "Steve Forst" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Thursday, June 02, 2011 10:31 PM
>> Subject: Re: astron supplies
>>
>>
>>> Hi Lou,
>>>
>>> I assume you are talking about one of the transformer types, and not one
>>> of the switchers.   If that is the case, the answer is yes.   Remove the
>>> cover, on the right hand side of the supply ( looking from the front) is
>>> a small circuit board.  It is right above the big filter cap.  The
>>> soldered side of the board is facing up and components are down.   The
>>> variable component you adjust is on that board.  It isn't a knob, more
>>> like a little thumb wheel. It's very touchy, sighted help in watching a
>>> meter will help, but I've done it myself with the talking multi meter
>>> and some trial and error.
>>>
>>> 73, Steve KW3A
>>> On 6/2/2011 10:07 PM, Lou Kolb wrote:
>>>> Anyone know if there is a voltage adjustment inside the Astron power
>>>> supplies?  I have a 35 amp supply that may need some tweaking.  Thanks.
>>>> Lou
>>>>
>>
>>