About the 0-51811-7
The 0-51811-7 is a TSTH circuit board made by Reliance Electric. The face of this circuit board has a fifteen-port connector with two ports on the side of the connector to secure the cord in place. Underneath this connection point, there are two gray metal tabs under the word TEST. The metal tab on the left is labeled + and the metal tab on the right is labeled -. These tabs have an inclusive marking underneath that connects them with a series of black buttons labeled as a whole as TEST POINTS. Each individual button also has a label A1, A2, A4, A8. There are two more metal tabs under the word OUTPUT. These metal tabs have an inclusive mark as well and go to a section of two white buttons labeled as a whole SCOPE. The individual buttons are labeled B1 and B2. Below these buttons is a small variable resistor with a small white arrow on it. Around this variable resistor are the numbers zero (0), two (2), four (4), six (6), eight (8), and ten (10). Next to the variable resistor is a toggle switch labeled TEST SIGNAL. On the left side of the switch is a plus sign (+) and on the right side of the switch is a minus sign (-). At the bottom is the circuit boards part number 0-51811-7. Behind the faceplate is the circuit board itself. This circuit board has many pieces including transformers, resistors, transformers, microchips, metal pins, among many others.
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