The problem will be found either in the bandpass filter on the left end of the 2 band board, or in the connections between the filter board and U7 Check the path between U7 pin 4 and the filter board P1 pin 2 and also between U7 pin 5 and filter board P1 pin 1 - both should have close to zero ohms resistance.
If that is not the problem, check the capacitor values for C1 through C10 on the board against the band components chart. You might check for continuity between the junction of C4 and C5 when the band is set to Band1 and between the junction of C9 and C10 when set for Band2 - the relays are latching, so you can set the band and then remove the filter board to check for continuity. Do you have the same problem on both bands? If so, it is probably a connection problem. On only one band, I would suspect a wrong component. 73, Don W3FPR On 9/25/2011 2:20 PM, K7MH wrote: > It is the two band board with 40 and 20 meters. > I have looked over the filter board several times and re-soldered some > joints just to be sure. > I will look over it again. > I used the pre-wound coils but will look them over again and make double > sure the right one is in the right place. > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/Voltages-for-Q5-and-U8-tp6825928p6829688.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > 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 > ______________________________________________________________ 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
