Harry,
One of the most common problems with the PLL is a solder bridge on the
thermistor board. Often you remove the front panel and control boards to
gain access to the small board.
Check the voltage at RF Board U6 pin 5 - if it is other than 4 volts, you
can be certain that there is a problem on the thermistor board.
If that does not reveal the solution, go to Appendix F of the manual and
follow the steps on page 10 for "PLL Reference Oscillator and VCO". If you
have not yet built up the RF Probe from the parts supplied with your K2, now
would be a good time to do so - unless you have a 'scope or other means of
measuring RF Voltages.
73,
Don W3FPR
> -----Original Message-----
>
> Hello,
>
> I am to trying the alignment the vco from my new K2 number 5351.
> Here is the problem, at R30 (page 61) I see no voltage. This must be 6 V.
> I turned at L30, that makes no difference.
> Everything is ok even T5.
> What can I do??
> I have seen the troubleshooting at page 10. (PLL Reference Oscillator and
> VCO) and everything looks normal.
> I hope that you can help me.
>
> 73 Harry PA3CWQ.
>
>
_______________________________________________
Elecraft mailing list
Post to:
[hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help:
http://mailman.qth.net/subscribers.htmElecraft web page:
http://www.elecraft.com
Locked
