[Elecraft] dead transistors at the K2
afu-dg3oo at web.de
afu-dg3oo at web.de
Tue May 27 05:12:32 EDT 2008
Hi,
I am using here an K2, serialnumber about 3000 and more. Yesterday i tried to tune. The effect was: no power output at each qrg. Than i solder out the Transmittransistors 2SC1969 and checked with an ohmmeter the routes Base - Collector, Base - Emitter and Emitter - Collector. In one way Emitter - Collector i measured at each transistor an resistor about 30 ohms.
Now i do the same with drivertransistor 2SC2166 and i got the same effect. They all died! Now i checked the predrivertransistor. oh well, he is living.
But i dont know, how i killed the transistors. the cause or reason ist unknown.
Then i bought in the local elektronikshop for little money new transistors with the logo from mitsubishi. Then i called via phone the elecraft distributor in germany and he told me, that most of these transistors are fakes.
That is the situation.
DG3OO
manfred
_______________________________________________________________________
Jetzt neu! Schützen Sie Ihren PC mit McAfee und WEB.DE. 30 Tage
kostenlos testen. http://www.pc-sicherheit.web.de/startseite/?mc=022220
More information about the Elecraft
mailing list