[Elecraft] K1 transmitter dead

Greetings, I finished my K1 last week and everything went fine. Both resistance and voltage check were perfect and the alignment procedures were good, too, both rx and tx but I have only used a dummy load on the tx and didn't transmit into an antenna. Today I finished and installed the KNB1 and

[Elecraft] K1 transmitter dead

My K1 died after several years of fine service. Very little of any RF power output. Although the display suggests full power is there, the external wattmeter shows a watt or less. Checked the wattmeter with the K2 and it is working correctly. RF probe measurements suggest that the problem is