[Elecraft] Problem with K2 100

[ORTHODOCT]

Gentlemen:

I find myself in need of assistance.  I built the K2 S/N 3100 and have =
added SSB mod, clock and audio filter, 160m board.  Unit works =
flawlessly.  !5 w out @13.8 volts and about 2.7 amps. =20

K2 100 meticulously assembled. No problems until page 44 in manual.Under =
SWR Bridge null adjustment, 7055 kHz, power set to five watts, antenna =
connected to SO239 on back of K2 100.  Get "High Current", 4 amps;   =
only 1 watt out.  Power transistors in K2 get hot.

Temperature calibration step:  no problem.

Under KPA100 Power supply step (p.45) , K2 off, K2 DC cable (KPA 100-J4) =
plugged into K2 Aux 12V input.  Turning on high current power supply =
trips protective circuit in power supply (over current).  If K2 DC cable =
unplugged from K2 Aux 12V input and high current supply turned on, no =
short and current drain from supply minimal.

All voltages and resistance measurements listed in tables are within =
limits specified.  Initial tests (page 20) normal.

Afraid to proceed any further without your help.  Don't want to smell =
any sizzling components.  Look forward to your reply.

TNX and 73

Ty
KC4NWF

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