​ds3800ntbe General Electric Thermocouple card

These are vertical pin mating connectors with the letters JA and JB on them. They’re both 28-pin connections. The DS3800NTBE’s circuit board contains 48 capacitors.

thirteen exhaust thermocouples are distributed through the  <RST> system: 4 to R, 5 to S, 4 to T. Each of these calculates the median value and sends it back to the <RST,> which means under regular working conditions the turbine is controlled by thirteen thermocouples.   It is important to the end user that all of these cards are in good working order, as individual deviations (bad readings) from one card may result in a bias of a few degrees that results in a significant loss of output.

The DS3800NTBE has 48 capacitors populating the board.  There are no resistors or diodes populating this board.