Ken, thanks for the reply. Preliminary tests indicated I was having the issue with the LPA as well, so reseating the KPA3 wouldn't alone do the trick. My rig came back from Elecraft about a week or so ago. The issue ended up being with the LPA. Something heated up a diode that loosened the soldered connection, creating an intermittent with an associated transistor--which is why at times I would have full power and at other times no power. Usually the transistor fails entirely, so this was a bit more of a challenge--and of interest!--to the Elecraft support crew. But they did resolve it, as well as installing some other upgrades. Nice to have Baby back ;-)! 73 Paula k9ir
From: N4OI - Ken [via Elecraft] <[email protected]> To: K9IR <[email protected]> Sent: Wednesday, November 14, 2012 10:35 AM Subject: Re: K3 intermittent low power issue K9IR wrote >[...] ended up working via email with Elecraft support, but unfortunately we >couldn't resolve it, so the rig currently is in CA for repair ;-). I will be >very curious to learn from them why the power issue occurred. > >73 Paula K9IR > >From: N8XPQ -- [...] have you checked the connections of the KPA3 100w >amplifier module. I have a friend that was experiencing a similar issue, and >discovered that the module had become unseated somewhat causing intermittent >RF power output issues. [...]My K3/100 serial number 6835, which is only about >a month old, began having similar intermittent power problems. For a while it >appeared that the "tune" function always worked... but then that also dropped >power intermittently. I just reseated the KPA100 module, the connector board >that it plugs into, and that sparsely populated RF board that is used when >there is no internal tuner. So far so good, but too early to tell. 73 ES GOD BLESS U ES URS DE KEN N4OI If you reply to this email, your message will be added to the discussion below:http://elecraft.365791.n2.nabble.com/K3-intermittent-low-power-issue-tp7563274p7565626.html To unsubscribe from K3 intermittent low power issue, click here. NAML -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-intermittent-low-power-issue-tp7563274p7565628.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
