Hi Elecrafters! I have problem on my K3/100 (S/N3050, factory assembled). When I transmit more than 12W(means hi power amp on) within about 30min after mains power on, HI-TEMP alarm occur and equipment is forced to set 5W. No problem at all when hi-power amp is through ( Po<12W ). Any idea? Thanks in advance 73, Atsu JE1TRV