Dohn, You may or may not have to spend all afternoon checking the soldering, but I can tell you that a solder splash on the thermistor board is one of the most common problems with the PLL.
As a quick check, measure the voltage at U6 pin 5 - it should be 4 volts (+/- 10%) - if it is not, then for sure you have a problem with the thermistor board. You can get a view of the back of the thermistor board by removing the front panel and control board. Look carefully at the junction of RE and RF - it is easy to create a solder bridge to ground there. > -----Original Message----- > > All has gone splendid thus far in the K2 construction. That is, till now. > I am in alignment and test, > > Part II. VCO alignment: > > I have the correct slug tuned inductor installed at L30. When I > connect my > DMM to R30 (Lt side) and ground, VFO set to 4000 kHz, I get a reading of > 7.95 volts. Turning L30 (as you may have guessed) is doing nothing. Am I > doomed to checking solders my entire Sunday (which is still more fun than > watching the Lions lose) or is there a usual suspect or problem spot? > > Thanks > > Dohn - N8EWY > _______________________________________________ Elecraft mailing list Post to: [email protected] 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.htm Elecraft web page: http://www.elecraft.com
