Ok. I will do that. Anything is worth a try T-Mobile. America's First Nationwide 4G Network.
-----Original message----- From: Don Wilhelm <[email protected]> To: Mark Flavin <[email protected]> Cc: [email protected] Sent: Sat, Nov 26, 2011 20:05:50 GMT+00:00 Subject: Re: [Elecraft] KPA100 Problem Mark, If there was a marginal solder connection, it may have worked but with the movement involved with the upgrade, it may have finally failed. Yes, investigate those components that I mentioned. If the temperature is not being sensed, the fan will be turned on and off by the firmware because the firmware is not getting correct information about the actual temperature. Are the thermal pads under Q3 and Q4 in good shape? It may be worth replacing them if there is any question. 73, Don W3FPR On 11/26/2011 2:24 PM, Mark Flavin wrote: > Thanks Don. This thing worked before I did the upg kit. I will check that > again but I didn't really touch those. Perhaps I will remove the Q3 and > check that area. Best I can tell the upgrade didn't really address any of > that but I don't know. The finals don't get hot at all. I even took the > heatsink off to make sure there were no shorts or anything and its the same. > The weird thing is how the fan starts and stops as I key even at low (11 > to 15 watts) power. I just hope its not the finals. I don't think so > either but I want to try everything else first. Could Q3 just be too > sensitive due to something. I could try changing it I suppose. > ______________________________________________________________ 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
