Hi Try reversing the ohmmeter leads or changing ranges and see if the readings look better. If not I wouldn't worry about it. You are mainly looking for gross errors like very low readings or shorts. Some DVM ohms ranges will turn on semiconductors in the circuits and that will give the effect of a lower than expected reading. Changing ranges or reversing the leads may keep the semis from conducting.
Don Brown KD5NDB ----- Original Message ----- From: Brian Wruble<mailto:[EMAIL PROTECTED]> To: [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]> Cc: Elecraft Discussion List<mailto:[email protected]> Sent: Sunday, August 08, 2004 1:07 PM Subject: [Elecraft] K-2 Control Board Resistance Checks Fail Hi all: I am assembling K-2 S/N 4397. I have just completed the Control Board. Two of the resistance checks fail. The resistance between the collectors of both Q1 and Q2 to ground measure 454 K each. They are supposed to show resistance >1meg to ground. I have checked resistor network RP1. It is installed correctly. On RP1, the resistance between 1&2, 3&4, 5&6, 7&8 and 9&10 are all 3.9K. Resistance checks between 2&3, 4&5, 6&7 are all under 1 ohm. Resistance between 8&9 is about 1.5k. That strikes me as an anomoly, but I'm not sure. Can anyone tell me whether this looks good, or suggest where the problem might be? Tnx. 73 de Brian W3BW _______________________________________________ Elecraft mailing list Post to: [email protected]<mailto:[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<http://mailman.qth.net/mailman/listinfo/elecraft> Help: http://mailman.qth.net/subscribers.htm<http://mailman.qth.net/subscribershtm> Elecraft web page: http://www.elecraft.com<http://www.elecraft.com/> _______________________________________________ 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
