Further investigation shows the output of U4 78L06 regulator to be down to 1V. So it appears the 78L06 has failed and once I have found one I will change it.
Thanks for the help. 73 Dave G3YMC On 6 Dec 2014 at 15:57, Dave Sergeant wrote: > My KAF2 has been working fine in my K2 for some years, not that I > actually use it that much. Today I came into the shack to find no audio > coming out of the K2 and when I tried to change the AFIL settings it > said 'not installed'. I cannot change the RTC menu settings either. > > I have moved S1 on the KAF2 to bypass it and all is working fine so it > seems there is a fault on the KAF2. The manual suggests this is a fault > with the microcontroller, which of course it may well be, but are there > any other known causes? I did think of the backup battery but not sure > if this would cause issues outside the RTC, it measures just over 3V so > a bit down. > http://davesergeant.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
