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Victory! I now have keyed CW output on all bands.?

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• The main culprit was the switched +5V bias regulator U2301 on the final amp board. No + output from this 7805 and switched +13.6V going into it. This was relatively easy to find after I started checking voltages and seeing nothing on the bias circuitry.?
• After replacing this 7805, still no output. I could see that the regulator was producing switched +5V but not getting to the rest of the board. I had to get to the lower traces of the PA board which was a chore since I did not see that the final amp transistors had TWO small allen head screws attaching them. You have to bend some parts out of the way to get to them and release the board from the heat sink.?
• Once the board was liberated, I could see that I didn't have a "trace" issue, the output of the regulator was apparently not soldered down correctly so a heating of the joint from the bottom side cured that.?

Really cool to be able to put this dude back into service after a twenty year lay-off. That receiver is so sweet.?

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Thanks for the hand, everyone.?

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Craig/W8CS

Greenville, SC