[Elecraft] K2 power amps Q7,Q8

leo kg6wni at yahoo.com
Mon Jan 30 13:10:02 EST 2012


My K2 serial number#7144 is almost completed. All tests have been good except
the last resistance check on page 76.
 Collector to ground should read 0 ohm,s .Even without the heat sink on I
get 3.6K.Looking through the   E mail's that are posted I have removed
transformer T3,recheched the collectors of Q7 and Q8,I get a reading of 0
ohm's all good.I removed Q7 and Q8 so I can get a beter look at what is
going on .the collector pads to ground without T3 are good,but when I short
out pads A and B for T3 where the windings will go I get  reading of 3.6K.
 Eye balling the board for shorts,I can't find a thing wrong and T4 windings
look good to me.
 Any ideas before I pack this thing up and send it off for repair.
                              Leo KG6WNI

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