Scott, Here are some things I would try:
1. Checking the ammeter - when I place the display of my K2 in the E i mode I see a 0.02 decrease in current when I turn the Preamp off. The way my K2 is configured the reading with the Preamp on is 0.28 and with it off 0.26. You might try this to verify some ammeter functionality. 2. It is possible that there will be no voltage on the collectors of Q9 and Q10 until the K2 is in the CAL FCTR mode. I suggest you make the measurements in this mode if you have not already done so. 3. The voltmeter is independent of the frequency counter prior to U6. When you place the K2's display in the E i mode what voltage is displayed? Do you have P7 jumper connected for INT or EXT? If you have the jumper connected for INT and your E i display is showing supply voltage the voltmeter is working properly. 4. Does turning on/off the Preamp make a difference in the receiver noise level? If it does the receiver is at least partially functional. Have you installed the noise blanker? Is jumper W5 inplace? A missing W5 would make the receiver seem dead, and a defective noise blanker could possibly do the same. Most of the problems I have seen with K2's were the result of poor solder joints! You have to be diligent to find some of these errors. Setting my work aside and taking a break often help me see things I missed before! I hope these suggestions help get you on the right track, Robie - AJ4F On Sun, Mar 23, 2008 at 5:02 PM, Scott McDowell <[EMAIL PROTECTED]> wrote: > Hi > > Still having some problems with the receiver on my K2. > I am presently trying to figure out why my frequency counter and volt meter > is not working. > The amp meter always shows .24 miliamps. > > CB Q9 and Q10 have no voltage on any pin, and CB U6 has no voltage on pin > 10, which > I take is the input for the counter and voltmeter. I don't see any other way > for Q9 and Q10 > to receive voltage other than U6 pin 10. Am I barking up the wrong tree? > It looks to me like U6 has a problem, should I replace it? > > On my receiver I am getting a good level of noise from it on all bands, but > no signals. > Every time my electric fence fires , my S meter jumps to an S-4. Would an > electrical > impluse effect it differently than an RF signal? I think that my BFO > probably still isn't > working. I've checked all the voltages on RF board U11, U12, Q25, and Q24 > and they are what > they should be. > Anyone have any ideas? > 73 > Scott N5SM > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > 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 > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
