[Elecraft] K2 S/N 3594 - HELP!!!!!

[Sean Williams]

Voltage at r 30 is about 20millivolts.

Connections at t5 are good - have had that out and remade all joints just in
case.

Will carry out component checks.

Thanks
Sean
----- Original Message ----- 
From: "k4zm" <k4zm@comcast.net>
To: "Sean Williams" <m1ecy@uku.co.uk>
Sent: Tuesday, July 08, 2003 5:47 PM
Subject: Re: [Elecraft] K2 S/N 3594 - HELP!!!!!


> Sean:
>
> What voltage are you reading at the R30 test point?  This problem is a
> result of something in the PLL circuits and could be most anything on the
> top half of the page on the schematic sheet that is labled Sheet 1 of 4.
If
> the voltage is above the required and you cannot vary it with the
adjustment
> of L30 that means the PLL is in an unlocked condition. Anything in the PLL
> Reference Oscillator , PLL Synthesizer, or VFO circuits could cause the
> problem.... I suggest you check each component for the correct type and
make
> sure T5 is not installed backwards.
> Also check to make sure you have a good connection to the windings of T5.
> Many fellows had a problem with not stripping enough enamel coating off
the
> leads of T5.  A good check is to read the resistance across each winding
> using a ohmmeter on the foil not the wire. Each should read a very low
> resistance.
>
> 73 & Good Luck
>
> Jim Younce K4ZM
> K2  SN:18
>
>
>