I've seen PLL errors when there is an SMD resistor near the pem nut that has been crushed by improper tightening, or lack of lock washer placed behind the board. Look at your PCB, and see if you can find any cracked parts going up to the TMP connetor output leading to the Sub rec. Synth board.
Also, try swaping the TMP cables between Synth board #1 and Syth board #2 to help confirm where the problem is. Hope this gets you started in the right direction
Micahel
N6MQL
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