[Elecraft] K2 RECEIVER: WHERE ARE THE SIGNALS?

[Manuel Wilches]

Don:

By the way: when I get to C225 the signal disappears. I have signal through 
the junction of D3 & D4. Therefore no signal on C225, C226 and C227.

I checked the toroids and they are ok. I forgot to mention I purchased the 
full set of toroids from the "Toroid Guy" and they look impeccable. I might 
have ruined some of them with my soldering though...

Let us see if I have this correctly: looking down on the RF board I made a 
continuity check from the left side component lead of C225 to the back lead 
of C227. Is this correct?

Thank you
73
Manuel
LU5OM

----- Original Message ----- 
From: "Don Wilhelm" <w3fpr at earthlink.net>
To: "Manuel Wilches" <manuelwilches at arnet.com.ar>; 
<elecraft at mailman.qth.net>
Sent: Saturday, February 25, 2006 12:16 AM
Subject: RE: [Elecraft] K2 RECEIVER: WHERE ARE THE SIGNALS?


> Manuel,
>
> If you can receive a signal with an antenna connected to C225, but not 
> C226,
> or 227, your most likely problem is improperly tinned toroid leads on 
> L25 -
> but check L26 while you are working in that area.
>
> A quick check is to make a continuity check from the top end of C225 to 
> the
> top end of C227 - if you measure much more than zero ohms, the toroids are
> not properly tinned and soldered.
>
> 73,
> Don W3FPR
>
>> -----Original Message-----
>>
>> I tried N0SS's probe and I pick up a strong signal through all
>> test points
>> up to C225. I have no signal pick up there nor at C226 or C227. I did not
>> check W6 and W1 because I did not install those jumpers (I followed the
>> Rework Eliminators instructions that call for other steps). I do
>> not know if
>> there is an alternative test point for those. I have been through
>> the usual
>> checks for bad solders etc.
>>
>> I have used the proper solder and a controlled temp soldering station.
>>
>> I would very much appreciate your assistance and guidance. I have
>> had the K2
>> on for hours now (playing with the keyer) and there has been no
>> change. It
>> looks great, that is for sure!
>>
>> Thank you very much
>> 73
>>
>> Manuel
>> LU5OM
>> CT4IK
>> K2 # 5310
>>
>