[Elecraft] [K2] voltage/current sensing K2 SN 4277

[Karl Erb]

Display now reads E00.7 i0.06 and low batt following my poking around inside.  Following guidance in the archives I measured (RX mode — TX display readings of swr, pwr seem ok)

D10 anode 13.89,  cathode 13.69 volts
Pins 2 and 3 of xxx 13.65 and 13.65
R9 voltages 13.67 and 2.62
R8 voltages  13.65 and 13.65
U3 voltages (1) 13.57 transitioning to 0 after 1 sec; (2) 13.65; (3) 13.61 transitioning to 0;  (4) 0; (5) 2.61; (6)2.66; (7)2.66; (8) 13.61
U6 pin 5    2.66V

Probing for suggestions for what to measure next (or advice to go ahead and replace U3 and/or U6 or something else)

Tnx for any help,
Karl W3BF