Frank,
Check the idling current: it should be 2 amps (keyed with no drive).
Gud luck, Roy K6XK
My KPA1500 just started needing a lot more drive (2X) to get 'normal'
output. I normally need 25-30 watts drive to get ~1k out. Now I need
about 60W. I get two kinds of alarms, depending on how I test the
situation, either a red "Gain Low' or a yellow 'Input Pwr'. If I
drive with a steady 10w, I get a 'Gain Low'. On cw, Just before
cutting out, I can drive the amp with ~65w, get ~600w out, then get
'InputPwr" followed by Gain Low' and the amp cuts out.
Time to go back to the factory?
Tnx, Frank W2YK
_
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