Re: [Elecraft_K3] KPA500 finals blown
I'd be interested to know what the HV tap was set for, what the HV displayed for HV and if there happened to be a voltage surge or spike that came down the mains. All that might contribute to sudden failure. I doubt heat is a factor.toggle quoted messageShow quoted text
Just a thought.
On 21, Jan 2016, at 8:47, email@example.com [Elecraft_K3] <Elecraft_K3@yahoogroups.com> wrote:
KPA500 shut off with a bang while operating RTTY @300W.
Antenna is a steppir beam.
On opening the KPA500,found 2 ceramic? caps of VRF2933
adrift with underside of the said caps,black.
I am in touch with Support.
Has anyone here replaced these devices? This will be my first time
working with power transistors.
73 and HNY,