That is textbook for burned pins on the KPAIO3 board - particularly
if it has never been upgraded to the gold pins. Pull the fan panel
and take a look.
73,
... Joe, W4TV
On 2025-01-29 9:11 AM, James Beitchman wrote:
While tuning the K3/100 (S/N 1551 plus upgrades) and antenna coupler
(external) with the SWR 1:1 and the output power at about 75W, suddenly
there was a click from the K3 and the error message displayed: ERR 12V, This
now occurs when the power is increased from zero to about 10W. At that
point, the problem occurs, and the power cannot be increased above 10W. The
power supply voltage is constant at 13.8VDC and does not glitch when the
error occurs. Thoughts? Would appreciate help.
73,
Buzz
W3EMD
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