[Elecraft] K3 #00626 - help with KPA3 Rev B schematic

[Ted G7BQM]

Hello All,

I have recently acquired an early K3 which needs tidying and checking over.  So far all appears to be OK except for the KPA3 which gives no RF output but the rig draws 14 Amps regardless of the power setting.  The LPA is working fine with up to 12 W RF out and a max current draw of 4 W.

Visual checking of the KPA3 board reveals nothing amiss but also shows considerable component differences compared to the only schematic I could find on the Elecraft website - the Rev C version.

If any of you early adopters have a .PDF schematic for the KPA3 Rev B, I would be most grateful for an electronic copy.

73, Ted G7BQM  (with quite a lot of Elecraft stuff!)