Brian, In the back of the manual, you will find a parts placement diagram that clearly shows the orientation of the diodes. Use that for reference rather than a photo - it is easier.
Yes, D5 installed backwards could cause the buttons to not function, and may also create other "funny happenings". 73, Don W3FPR Brian Denley wrote: > Don: > After poking around, I am leading toward D5 of the Front Panel board > installed backwards. From the schematic, this would prevent bank 1 of the > switches and the power knob from functioning properly and would, I think, > also affect the keyer operation. I have looked for a photo of this board on > the Elecraft site but the one they have is the 1999 board. If that circuit > hasn't changed then D5 is indeed backwards. I can't see the silkscreen > patterm on my board anymore as the diode covers it too well and it is too > stiff to move. From the schematic, however, I am sure it's backwards. > Thanks again for your help! > Brian > http://home.comcast.net/~b.denley/index.html > > > ----- Original Message ----- > From: "Don Wilhelm" <[email protected]> > To: "Brian Denley" <[email protected]> > Sent: Sunday, June 27, 2010 10:48 AM > Subject: Re: [Elecraft] K2 Initial Tests > > > >> Brian, >> >> You didn't say anything about the buttons not working before. First step >> is to re-flow the soldering on the entire front panel. >> >> 73, >> Don W3FPR >> >> Brian Denley wrote: >> >>> Don: >>> Thanks and I will resolder those connections but it bothers me that none >>> of the buttons respond at all. Only the encoder seems to work properly. >>> Brian Denley >>> http://home.comcast.net/~b.denley/index.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 > > ______________________________________________________________ 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
