Tnx Geoff for the input. W3FPR also suggested reseating U6. I am going to try that first. 73, N2TK, Tony
-----Original Message----- From: Geoffrey Mackenzie-Kennedy [mailto:[EMAIL PROTECTED] Sent: Saturday, February 02, 2008 4:41 AM To: N2TK Cc: Elecraft Discussion List Subject: Re: [Elecraft] K2 - hang up problem A problem that appeared in my K2/100 #3255 some years after it was built, and again about a year later, might or might not be relevant. My K2 went on 'strike' while in use, and none of the front panel controls except the power on/ off switch had any effect. The display showed the frequency in use when the K2 acted up, and tuning did not change it period. Turning power off and back on did not solve the problem, and the displayed frequency did not change. In both cases the problem was caused by the socket of U6 the Control Board MCU, pulling U6 and reseating it cured the problem. After the second episode I replaced U6's socket with a 'Turned Pin' type which I should have used when building the rig. The type of socket supplied with the kit can often give rise to 'corrosion' problems, which result in poor contact between IC pins and the IC socket. 73, Geoff GM4ESD "N2TK" <[EMAIL PROTECTED]> wrote: > > Before I tear into the K2 to find out what happened today I figured I > would > ask on here in case someone has seen this problem before. > > It receives fine on all bands. When I transmit (does not matter what power > level or what band) it hangs up. If I keep it on the transmit mode power > out > is fine. If I let it go back to the receive mode the receive signals are > very, very weak. If I talk into the mike, there is no power out and I have > side tone in the headset so I can listen to my transmit audio. > To correct this problem I need to change bands or shut off then on the > radio. > > Anyone hear of this problem before? > > Tnx for any ideas before I pull out the schematics and take off the > covers. > > 73, > N2TK, Tony _______________________________________________ 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
