How are you measuring those voltages? In any case, it looks like the driver is not working. You will have installed a nylon standoff on it, I would look for a short around that area.
Mike Bo Andersson wrote: > > Hi! > > After building and installation of K60XV, I got problem with Hi Cur when > testing transmission. > > All around K60XV, as receive and settings for transverter acts as > exspected. > > Regardless if I set Power to 0,2 or 15 Watts or changning Cal Cur, I got > Hi Cur and I can see on may power supply, radio drawing 3,5 amp. > > I make some test from K2 Manual appendix E, Troubleshooting > > Page 13 around ALC Power Control Test VPWR reading was 1.10 VDC > Expected 0.7 - 2.5 VDC, no problem > > Page 14 Pre-Driver, Driver and PA > > Driver Input Reading: 1.71 Vrms Expected: 0.026 Vrms > Driver Output Reading: 0.416 Vrms Expected: 1.8 Vrms > PA Input(Q7) Reading: 0.8 Vrms Expected: 0.38 Vrms > PA Input(Q8) Reading 0.39 Vrms Expected: 0.38 Vrms > RF Detector Input Reading 0.4 Vrms Expected: 2.0 Vrms > > It seems that one or both PA transistor could be defective. > > Measure Diode/Transistor as point 7. > > + = positive lead to > - = negative lead to > > Q7 > > B C E > + 0.68K 0.68K > - 6.0k 0.85K > > Q8 > > B C E > + 0.68K 0.68k > - 6.0K 0.85K > > I hope some one can read and understanding my measure and perhaps have an > idee around this problem. > > 73's Bo/SM6FPG > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > > -- View this message in context: http://www.nabble.com/K2-Hi-Cur-tp14785526p14789260.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
