Thanks Dave. This is very helpful. I will check this for sure. Raj
Sent from my iPhone > On Oct 7, 2020, at 3:57 PM, David Olean <[email protected]> wrote: > > Hello Raj, > > I had a K3 die and it was due to the 8 volt regulator going belly up. Before > you do anything, check the voltages out of those regulators that are bolted > to one of the side panels. Lack of 8 volts kills the synthesizer. I made a > few notes when I did the repair. I have attached my notes to this message. > Possibly it may be of help to you. I showed where the synthesizer frequency > outputs are and what levels to expect. The K3 I fixed was also a low serial > number around 375 as I recall. > > 73 > > Dave K1WHS > >> On 10/7/2020 11:26 AM, Rajiv Dewan via Elecraft wrote: >> My K3 (with all S upgrades, ser #170) stopped working over the weekend. I >> noticed that on 80m, while the frequency on the rig was 3574, the frequency >> reported by KAT500 was 3152 (or so). No output on any other band. I then >> checked reception of WWV - no reception of the 10Mhz signal. I fed in a >> -50dBm signal at 3574KHz. No reception. >> >> I am going to crack the case on the weekend. >> >> The only think I can think of is that something has shaken loose as the rig >> was transported by car a while ago. Given the odd frequency, I am thinking >> that it may in the LO chain. >> >> Any thoughts? >> >> Raj, N2RD >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [email protected] > <K3 TROUBLESHOOTING NOTES.docx> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
