[1000mp] Need a troubleshooting pointer

[Tom Frenaye]

Thanks to W1TO and several others for suggestions on where to start.  It will take me a couple of days before I have time to dig in and do some checking. Will let you know what I find. 

   73. Tom K1KI

On Feb 21, 2014, at 8:03 AM, Tom Homewood <w1to at yccc.org> wrote:

> Hi Tom.
> 
> I am about 99% sure from the description that it is a VCO problem. I had
> that problem on two ranges I think.
> 
> The link you got should give you enough information, but feel free to
> contact me by email or phone.
> 
> The solder joints I found bad were on wire leaded inductors, I did not take
> the shield off the board so I am not 100 percent sure what the parts were.
> 
> There is a voltage measurement that will tell you right away if the VCO is
> working right.
> 
> 73, Tom W1TO
> 
> 
> 
> On Thu, Feb 20, 2014 at 8:54 AM, Tom Frenaye <frenaye at hughes.net> wrote:
> 
>> One of my ft1000mp's developed a problem during last weekend's ARRL DX
>> Contest and I'm looking for a pointer on where to start looking for the
>> source of the problem.
>> 
>> The symptoms are:
>> 
>> 1) On 20 and 40 meters the transmit SWR is infinite when an antenna is
>> connected.  It works fine on the other bands.  This is with the tuner off.
>> 
>> 2). On receive, the signal levels on 20 and 40m are down 50db or more but
>> fine on the other bands.
>> 
>> I'm assuming it is not one of the band pass filters and not a pre-amp.
>> 
>> Next step for me is to find a a magnifying glass for the schematic!
>> 
>> Thanks for any pointers.
>> 
>>    Tom/K1KI
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