Thanks Don, I looked at Appendix B and redid several solder joints. I'd like to think my resoldering solved things, but it is probably the fact that I was reading the pin numbers wrong that caused my problems. Looking at the schematics I finally figured that one out.
Now I'm getting 85.3K for U6 pins 29 and 30, with and without U6; just right. U3 pin 8 is 1.008M, and the U8 pins 15 and 16 are still open, but that may be OK. As far as resistor pack 4, I remember an "incident" while I was installing RP4, after soldering all the pins, I tried to straighten it out a little on the board - it wouldn't bend, but I did feel a little "snap".... so even though I am getting the correct readings for U6 pins 29 and 30, I'm wondering if I possibly damaged some of the resistors in RP4. Is there a way I can check RP4? I tried going along the row, putting the DMM probes on adjoining pins and moving up the pack. Some readings were about 85K resistance, some read short. It's on to the front panel. Thanks again. Vic KG4HTT On Wed, 16 Jun 2004 23:52:02 -0400 "Don Wilhelm" <[EMAIL PROTECTED]> writes: > Vic, > > There is not much on the Control Board that connects to pins 29 and > 30 -these are the DOT/PTT and DASH lines and they connect directly to > pins 17and 18 of P3 (they also connect to 2 resistors of RP4). > Check carefully for any solder bridges at the pins of P3, the U6 > socket and RP3. > > If you suspect U6 itself, you can remove it from the socket and > check the resistance on the board itself (you should see a high resistance > similar to the values indicated in the manual) - use static protection when > inserting and removing U6, and put it into the black anti-static foam (or the > antistatic tube) when it is removed. > > 73, > Don W3FPR ________________________________________________________________ The best thing to hit the Internet in years - Juno SpeedBand! Surf the Web up to FIVE TIMES FASTER! Only $14.95/ month - visit www.juno.com to sign up today! _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com
